LEVEL 3 COMMUNICATIONS INC
424B1, 2000-06-14
TELEPHONE & TELEGRAPH APPARATUS
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<PAGE>

                                                Filed Pursuant to Rule 424(b)(1)
                                                Registration No. 333-37362

Prospectus

                          Level 3 Communications, Inc.

                               Offer to Exchange

                               ----------------

                          . 11% Senior Notes due 2008

                                      for

                    . Outstanding 11% Senior Notes due 2008

                               ----------------

                        . 11 1/4% Senior Notes due 2010

                                      for

                  . Outstanding 11 1/4% Senior Notes due 2010

                               ----------------

                    . 12 7/8% Senior Discount Notes due 2010

                                      for

              . Outstanding 12 7/8% Senior Discount Notes due 2010

                               ----------------

                            Terms of Exchange Offer

  .   The exchange offer expires 5:00 p.m., New York City time, July 12,
      2000, unless we extend it.

  .   The notes to be issued in the exchange offer will not trade on any
      established exchange.

  See "Risk Factors" beginning on page 11 for a discussion of matters that
participants in the exchange offer should consider.

                               ----------------

  Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of these securities or passed upon the
adequacy or accuracy of this prospectus. Any representation to the contrary is
a criminal offense.

                  The date of this prospectus is June 9, 2000.
<PAGE>

   This prospectus incorporates important business and financial information
about us that is not included in or delivered with this prospectus. We will
provide this information to you at no charge upon written or oral request
directed to: Vice President, Investor Relations, Level 3 Communications, Inc.,
1025 Eldorado Blvd., Broomfield, CO 80021, 720-888-2500. In order to ensure
timely delivery of the information, any request should be made by July 5, 2000.

                               ----------------

   Each broker-dealer that receives registered notes for its own account in the
exchange offer must acknowledge that it will deliver a prospectus in connection
with any resale of those notes. The letter of transmittal accompanying this
prospectus states that by so acknowledging and by delivering a prospectus, a
broker-dealer will not be deemed to admit that it is an underwriter within the
meaning of the Securities Act. A participating broker-dealer may use this
prospectus in connection with resales of notes received in exchange for the
outstanding notes where those notes were acquired by the broker-dealer as a
result of market-making activities or other trading activities. We have agreed
that, starting on the date of this prospectus and ending on the close of
business on the day that is 180 days following the date of this prospectus, we
will make this prospectus available to any broker-dealer for use in connection
with any of those resales. See "Plan of Distribution."

                               ----------------

                               TABLE OF CONTENTS

<TABLE>
<S>                                                                          <C>
Summary.....................................................................   1
Risk Factors................................................................  11
Information Regarding Forward-Looking Statements............................  20
Use of Proceeds.............................................................  21
Capitalization..............................................................  21
The Exchange Offer..........................................................  22
Description of Other Indebtedness of Level 3................................  32
Description of Notes........................................................  38
Certain United States Federal Income Tax Considerations.....................  84
Plan of Distribution........................................................  89
Legal Matters...............................................................  89
Experts.....................................................................  90
Where You Can Find More Information.........................................  90
Incorporation of Material Documents by Reference............................  90
</TABLE>

                                       i
<PAGE>

                                    Summary

    This summary highlights information contained elsewhere in this prospectus
and does not contain all of the information you should consider before
tendering original notes in the exchange offer. You should carefully read the
entire prospectus, including the documents incorporated in it by reference.
Level 3 Communications, Inc. was known as Peter Kiewit Sons', Inc. prior to the
March 31, 1998 split-off of its construction and mining management businesses
from its other business. This prospectus and the letters of transmittal that
accompany it collectively constitute the exchange offer.

                                    Level 3

    We engage in the communications, information services and coal mining
businesses through ownership of operating subsidiaries and substantial equity
positions in public companies. In late 1997, we announced a business plan to
increase substantially our communications and information services business and
to expand the range of services we offer. This plan is referred to in this
prospectus as the business plan. We are implementing the business plan by
building an advanced, international, facilities based communications network
based on internet protocol technology.

    As our business plan is implemented, our network will combine both local
and long distance networks and connect customers end-to-end across North
America and in Europe and the Pacific Rim. Over the next two to three years,
our network is expected to encompass:

  .  an intercity network covering nearly 16,000 miles in North America;

  .  leased or owned local networks in 56 North American markets;

  .  an intercity network covering approximately 4,750 miles across Europe;

  .  leased or owned local networks in 21 European and Pacific Rim markets;

  .  approximately 6.5 million square feet of gateway facilities in North
     America, Europe and the Pacific Rim; and

  .  undersea capacity, including a 1.28 Tbps transatlantic cable system and
     a 2.56 Tbps Northern Asia cable system initially connecting Hong Kong to
     Tokyo.

    We expect to substantially complete the North American intercity portion of
our network by the end of the year 2000. In the interim, we have leased a
national network over which we began to offer services in the third quarter of
1998. We also expect to substantially complete the first two rings of our
three-ring European intercity network by the end of the year 2000. In the
interim, we have also leased a European intercity network over which we began
to offer services in early 1999. As of March 31, 2000, we had secured 100% of
the rights-of-way required for our planned North American intercity network,
had completed construction of approximately 11,800 route miles of this network
and had approximately 4,200 route miles under construction. Also, as of March
31, 2000, we had secured substantially all of the rights-of-way required for
the first two rings of our planned European intercity network, completed
construction of approximately 3,200 route miles of this network and had
approximately 3,400 route miles under construction.

    In December 1999, we began carrying customer traffic between Dallas and
Houston on the first completed and lit segment of our North American intercity
network. As of March 31, 2000, we had operational facilities based local
metropolitan networks in 23 U.S. markets and 5 European markets. Our gateways
are advanced technical facilities which provide colocation space for our
customers' equipment and facilities, link our networks to other communications
networks and house our own network equipment. We have gateway facilities in 30
U.S. markets and in London, Paris, Amsterdam, Brussels and Frankfurt. We have
announced the

                                       1
<PAGE>

development and construction of a 1.28 Tbps transatlantic undersea cable
system, as well as the development and construction of a 2.56 Tbps Northern
Asia undersea cable system initially connecting Hong Kong to Tokyo.

    We believe that, as technology advances, a comprehensive range of both
consumer and business communications services will be provided over networks,
such as ours, utilizing internet protocol technology. These services will
include traditional voice services, as well as other data services such as
internet access. We believe this shift has begun, and over time should
accelerate, since internet protocol networks offer:

  .  more efficient use of network capacity than the traditional public
     switched telephone networks;

  .  an open protocol which allows for market driven development of new uses
     and applications;

  .  the prospect of technological advances that will address problems
     currently associated with internet protocol based applications that use
     the public internet; and

  .  an open architecture that enables new competition among suppliers and
     should ultimately lead to lower network costs.

Level 3's Strategy

    Key elements of our strategy include:

  .  Become the Low Cost Provider of Communications Services. Our network is
     designed to provide high quality communications services at a lower cost
     by taking advantage of efficiencies in new technologies such as packet-
     switching, using open, non-proprietary interfaces in the network design
     and by having an upgradable network that can more readily incorporate
     future technological improvements.

  .  Combine Latest Generations of Fiber and Electronics. In order to achieve
     unit cost reductions for transmission capacity, we have designed our
     network with multiple conduits to deploy successive generations of fiber
     to exploit improvements in transmission electronics. Optimizing
     transmission electronics to exploit specific generations of fiber optic
     technology currently provides transmission capacity on the new fiber
     more cost effectively than deploying new electronics on previous
     generations of fiber.

  .  Offer a Comprehensive Range of Communications Services. We provide a
     comprehensive range of communications services over our network,
     including private line, (3)VoiceSM long distance services, colocation,
     internet access and managed modem. We expect to begin commercial testing
     of some features associated with local voice services during the first
     quarter of 2000. We are also offering dark fiber and conduits along our
     local metropolitan networks and intercity networks on a long-term lease
     basis.

  .  Provide Significant Colocation Facilities. We have been experiencing
     higher demand for our colocation services from our web centric customers
     than we anticipated in preparing our business plan. We believe that
     providing colocation services on our network attracts web centric
     customers by allowing us to offer those customers reduced bandwidth
     costs, rapid provisioning of additional bandwidth, interconnection with
     other third-party networks and improved network performance. Therefore,
     we believe that controlling significant colocation facilities in our
     gateways provides us with a competitive advantage. In addition, having
     significant colocation facilities in a gateway allows the intra-facility
     exchange of traffic amongst a large number of customers to occur at a
     substantially lower cost than would be the case for traffic transported
     to other locations.

     As of December 31, 1999, we had secured approximately 3.4 million square
     feet of space for our gateway facilities and had completed the buildout
     of approximately 1.3 million square feet of this

                                       2
<PAGE>

     space. We believe we currently have more colocation space than any of
     our competitors. In January 2000, we announced an expansion of our
     business plan to increase significantly the aggregate amount of our
     global gateway facilities to 6.5 million square feet over the next two
     to three years.

  .  Provide Seamless Interconnection to the Public Switched Telephone
     Network.  In December 1999 we began to offer (3)Voice long distance
     service to allow the seamless interconnection of internet protocol
     networks with the public switched telephone network for long distance
     voice transmissions. Seamless interconnection allows customers to use
     our internet protocol based services without modifying existing
     telephone equipment or dialing procedures (that is, without the need to
     dial access codes or follow other similar special procedures). Our
     managed modem service uses similar softswitch technology to seamlessly
     interconnect to the public switched telephone network.

  .  Accelerate Market Roll-out. To support the launch of our services and
     develop a customer base in advance of completing our network build, we
     offer services over a combination of leased local and intercity
     facilities. Over time, these leased networks will be displaced by the
     networks that we are constructing.

  .  Target Web Centric Customers. To increase revenue-producing traffic on
     our network more rapidly, we are using a direct sales force focused on
     communications intensive and web centric businesses. These businesses
     include internet service providers, application service providers,
     content providers, systems integrators, next generation carriers, web-
     hosting companies, streaming media companies and internet protocol based
     storage providers. Providing continually declining bandwidth costs to
     these companies is at the core of our market enabling strategy because
     bandwidth generally represents a substantial portion of web centric
     businesses' costs.

  .  Develop Advanced Business Support Systems. We are developing a
     substantial, scalable and web-enabled business support system
     infrastructure specifically designed to enable us to offer services
     efficiently to targeted customers. We believe that this system will
     reduce our operating costs, give our customers direct control over some
     of the services they buy from us and allow us to grow rapidly without
     redesigning the architecture of the business support system.

  .  Leverage Existing Information Services Capabilities. We are expanding
     our existing capabilities in computer network systems integration,
     consulting, outsourcing and software reengineering, with particular
     emphasis on the conversion of legacy software systems to systems that
     are compatible with internet protocol networks and web browser access.

  .  Attract and Motivate High Quality Employees. We have developed programs
     designed to attract and retain employees with the technical skills
     necessary to implement the business plan. The programs include our
     Shareworks stock purchase plan and our Outperform Stock Option program.

Competitive Advantages

    We believe that we have the following competitive advantages that, together
with our strategy, will assist us in implementing the business plan:

  .  Experienced Management Team. We have assembled a management team that we
     believe is well suited to implement the business plan. Most of our
     senior management has been involved in leading the development and
     marketing of telecommunications products and in designing, constructing
     and managing intercity, metropolitan and international networks.

  .  A More Readily Upgradable Network Infrastructure. Our network design
     strategy takes advantage of recent innovations, incorporating many
     features that are not present in older communications networks, and
     provides us flexibility to take advantage of future developments and
     innovations. We have designed the transmission network to optimize all
     aspects of fiber and electronics simultaneously as a system to deliver
     the lowest unit cost to our customers. As fiber and transmission
     electronic

                                       3
<PAGE>

     technology changes, we expect to realize new unit cost improvements by
     deploying the latest fiber and transmission electronics technology in
     available empty or spare conduit in our multiple conduit network. We
     believe that the spare conduit design of our network will enable us to
     effect this deployment more quickly and at lower cost than other
     carriers.

  .  Integrated End-to-End Network Platform with Significant Colocation
     Facilities. We believe that the integration of our local and intercity
     networks with our colocation facilities will expand the scope and reach
     of our on-net customer coverage and facilitate the uniform deployment of
     technological innovations as we manage our future upgrade paths.

  .  Systems Integration Capabilities. We believe that our ability to offer
     computer outsourcing and systems integration services, particularly
     services relating to allowing a customer's legacy systems to be accessed
     with web browsers, will provide additional opportunities for selling our
     products and services.

    Our principal executive offices are located at 1025 Eldorado Boulevard,
Broomfield, Colorado 80021 and our telephone number is (720) 888-1000.

                                       4
<PAGE>

                               The Exchange Offer

    On February 29, 2000, we privately placed $800,000,000 aggregate principal
amount of our 11% senior notes due 2008, $250,000,000 aggregate principal
amount of our 11 1/4% senior notes due 2010 and $675,000,000 aggregate
principal amount at maturity of our 12 7/8% senior discount notes due 2010,
which we refer to collectively as the original notes, in a transaction exempt
from registration under the Securities Act. In connection with the private
placement, we entered into a registration agreement, dated February 24, 2000,
with the initial purchasers of the original notes. In the registration
agreement, we agreed to register under the Securities Act an offer of our new
11% senior notes due 2008, our new 11 1/4% senior notes due 2010 and our new 12
7/8% senior discount notes due 2010, which we refer to collectively as the new
notes, in exchange for the original notes. We also agreed to deliver this
prospectus to holders of the original notes and complete the exchange offer
within 180 days of the issuance of the original notes. In this prospectus, we
refer to the original 2008 senior notes and the new 2008 senior notes together
as the 2008 senior notes, the original 2010 senior notes and the new 2010
senior notes together as the 2010 senior notes, the original 2010 senior
discount notes and the new 2010 senior discount notes together as the 2010
senior discount notes and the original notes and the new notes together as the
notes. You should read the discussion under the heading "Description of Notes"
for information regarding the notes.

The Exchange Offer........  This is an offer to exchange $1,000 in principal
                            amount or, in the case of the 2010 senior discount
                            notes, $1,000 in principal amount at maturity of
                            new notes for each $1,000 in principal amount or,
                            in the case of the 2010 senior discount notes,
                            $1,000 in principal amount at maturity of original
                            notes. The new notes are substantially identical to
                            the original notes, except that:

                            (1)  the new notes will be freely transferable,
                                 other than as described in this prospectus;

                            (2)  will not contain any legend restricting their
                                 transfer;

                            (3)  holders of the new notes will not be entitled
                                 to certain rights of the holders of the
                                 original notes under the registration
                                 agreement; and

                            (4)  the new notes will not contain any provisions
                                 regarding the payment of special interest.

                            We believe that you can transfer the new notes
                            without complying with the registration and
                            prospectus delivery provisions of the Securities
                            Act if you:

                            (1)  acquire the new notes in the ordinary course
                                 of your business;

                            (2)  are not and do not intend to become engaged in
                                 a distribution of the new notes;

                            (3)  are not an affiliate of Level 3;

                            (4)  are not a broker-dealer that acquired original
                                 notes directly from Level 3; and

                            (5)  are not a broker-dealer that acquired original
                                 notes as a result of market-making or other
                                 trading activities.

                            If any of these conditions is not satisfied and you
                            transfer any new note without delivering a proper
                            prospectus or without qualifying for a registration
                            exemption, you may incur liability under the
                            Securities Act.

                                       5
<PAGE>


                            Each broker-dealer that receives new notes for its
                            own account in exchange for original notes, which
                            it acquired as a result of market-making activities
                            or other trading activities, must acknowledge that
                            it will deliver a prospectus in connection with any
                            resale of those new notes. See "Plan of
                            Distribution."

Registration Rights.......  Under the registration agreement, we have agreed to
                            use our best efforts to commence the exchange offer
                            or to use our best efforts to cause the original
                            notes to be registered under the Securities Act so
                            as to permit resales. If we are not in compliance
                            with our obligations under the registration
                            agreement, special interest will accrue on the
                            accreted value of the notes under certain
                            circumstances in addition to the interest that is
                            otherwise due on the notes. If the exchange offer
                            is completed on the terms and within the period
                            contemplated by this prospectus, no special
                            interest will be payable on the principal amount
                            or, in the case of the 2010 senior discount notes,
                            on the accreted value of the notes. The new notes
                            will not contain any provisions regarding the
                            payment of special interest. See "The Exchange
                            Offer--Special Interest."

Minimum Condition.........  The exchange offer is not conditioned on any
                            minimum aggregate principal amount or, in the case
                            of the 2010 senior discount notes, any minimum
                            aggregate principal amount at maturity of original
                            notes being tendered for exchange.

Expiration Date...........  The exchange offer will expire at 5:00 p.m., New
                            York City time, on July 12, 2000, unless we extend
                            it.

Exchange Date.............  Original notes will be accepted for exchange
                            beginning on the first business day following the
                            expiration date, upon surrender of the original
                            notes.

Conditions to the
 Exchange Offer...........  Our obligation to complete the exchange offer is
                            subject to various conditions. See "The Exchange
                            Offer--Conditions to the Exchange Offer." We
                            reserve the right to terminate or amend the
                            exchange offer at any time before the expiration
                            date if various specified events occur.

Withdrawal Rights.........  You may withdraw the tender of your original notes
                            at any time before the expiration date. Any
                            original notes not accepted for any reason will be
                            returned to you without expense as promptly as
                            practicable after the expiration or termination of
                            the exchange offer.

Procedures for Tendering
 Original Notes...........  See "The Exchange Offer--How to Tender."

Certain United States
 Federal Income             The exchange of original notes for new notes by
 Tax Considerations.......  U.S. holders will not be a taxable exchange for
                            U.S. federal income tax purposes, and U.S. holders
                            will not recognize any taxable gain or loss as a
                            result of the exchange.

                                       6
<PAGE>


Effect on Holders of
 Original Notes...........  If the exchange offer is completed on the terms and
                            within the period contemplated by this prospectus,
                            holders of the original notes will have no further
                            registration or other rights under the registration
                            agreement, except under limited circumstances. See
                            "The Exchange Offer--Special Interest."

                            Holders of the original notes who do not tender
                            their original notes will continue to hold those
                            original notes. All untendered, and tendered but
                            unaccepted, original notes will continue to be
                            subject to the restrictions on transfer provided
                            for in the original notes and the indentures under
                            which the original notes have been and the new
                            notes are being issued. To the extent that original
                            notes are tendered and accepted in the exchange
                            offer, the trading market, if any, for the original
                            notes could be adversely affected. See "The
                            Exchange Offer--Other."

Use of Proceeds...........  Level 3 will not receive any proceeds from the
                            issuance of new notes in the exchange offer.

Exchange Agent............  The Bank of New York is serving as exchange agent
                            in connection with the exchange offer.

                                       7
<PAGE>

                                   The Notes

    The new notes are substantially identical to the original notes, except for
the transfer restrictions and registration rights relating to the original
notes. The new notes will evidence the same debt as the original notes and will
be entitled to the benefits of the indentures. See "Description of Notes."

Issuer....................  Level 3 Communications, Inc.

Securities Offered........  $800,000,000 aggregate principal amount of 11%
                            senior notes due 2008, $250,000,000 aggregate
                            principal amount of 11 1/4% senior notes due 2010
                            and $675,000,000 aggregate principal amount at
                            maturity of 12 7/8% senior discount notes due 2010.

Maturity..................  March 15, 2008, March 15, 2010 and March 15, 2010.

Interest and Accreted
 Value....................  We will pay interest on the 2008 senior notes at
                            the rate of 11% per year on March 15 and September
                            15 of each year, beginning on September 15, 2000.
                            We will pay interest on the 2010 senior notes at
                            the rate of 11 1/4% per year on March 15 and
                            September 15 of each year, beginning on September
                            15, 2000.

                            The 2010 senior discount notes were issued at a
                            discount to their aggregate principal amount at
                            maturity. For a discussion of U.S. federal income
                            tax treatment of the 2010 senior discount notes
                            under the original issue discount rules, please
                            refer to the section of this prospectus entitled
                            "Certain United States Federal Income Tax
                            Considerations." The 2010 senior discount notes
                            will accrete at a rate of 12 7/8% per year to an
                            aggregate principal amount of $675,000,000 by March
                            15, 2005. The 2010 senior discount notes will not
                            accrue interest prior to March 15, 2005, unless we
                            elect to accrue interest on or after March 15,
                            2003. Beginning on March 15, 2005, cash interest
                            will accrue on the 2010 senior discount notes at
                            the rate of 12 7/8% per year and will be payable
                            semiannually on March 15 and September 15 of each
                            year, beginning on September 15, 2005.

Ranking...................  The notes are unsecured senior obligations. The
                            notes rank:

                            .   equal with any existing and future senior debt,
                                including without limitation the $2 billion
                                aggregate principal amount of our 9 1/8% senior
                                notes due 2008, the $833,815,000 aggregate
                                principal amount at maturity of our 10 1/2%
                                senior discount notes due 2008, the (Euro)500
                                million aggregate principal amount of our 10
                                3/4% senior notes due 2008 and the (Euro)300
                                million aggregate principal amount of our 11
                                1/4% senior notes due 2010, and

                            .   senior to any existing and future subordinated
                                debt.

                            We are a holding company, and the notes are
                            effectively subordinated to all obligations of our
                            subsidiaries. As of March 31, 2000, our
                            subsidiaries had approximately $2.146 billion in
                            aggregate indebtedness and other balance sheet
                            liabilities, excluding intercompany liabilities,
                            and $900 million in additional borrowings available
                            under our senior secured credit facility. See
                            "Description of Notes."

                                       8
<PAGE>

                            None.
Sinking Fund..............

Optional Redemption.......  We may not redeem the 2008 senior notes prior to
                            maturity.

                            We may not redeem the 2010 senior notes or the 2010
                            senior discount notes prior to March 15, 2005. On
                            and after March 15, 2005, we may, at our option,
                            redeem these notes, in whole or in part, at any
                            time prior to maturity at the redemption prices set
                            forth under "Description of Notes--Optional
                            Redemption," plus any accrued and unpaid interest
                            on the redeemed notes to the redemption date.

                            In addition, at any time prior to March 15, 2003,
                            we may redeem up to 35% of the aggregate principal
                            amount of the 2010 senior notes and up to 35% of
                            the aggregate principal amount at maturity of the
                            2010 senior discount notes with the net cash
                            proceeds of certain private placements or
                            underwritten public offerings of our common stock
                            at a redemption price of 111.250% of the aggregate
                            principal amount of the 2010 senior notes or
                            112.875% of the accreted value of the 2010 senior
                            discount notes, as applicable, in each case plus
                            any accrued and unpaid interest on the redeemed
                            notes to the redemption date. However, at least 65%
                            of the aggregate principal amount of the 2010
                            senior notes and 65% of the aggregate principal
                            amount at maturity of the 2010 senior discount
                            notes, as applicable, must remain outstanding
                            immediately after any redemption. See "Description
                            of Notes--Optional Redemption."


Change of Control ........  If an event treated as a change of control occurs,
                            you will have the right to require us to repurchase
                            all or a portion of your notes at a price equal to
                            101% of the principal amount or accreted value of
                            the notes, as applicable, plus any accrued and
                            unpaid interest to the purchase date. See
                            "Description of Notes--Certain Covenants--Change of
                            Control Triggering Event."

Covenants.................  The indentures for the notes limit our ability and
                            the ability of our restricted subsidiaries to,
                            among other things:

                            (1) incur debt;

                            (2) make various payments;

                            (3)  pay dividends and make other restricted
                                 payments and transfers;

                            (4)  create liens;

                            (5)  enter into certain transactions, including
                                 transactions with affiliates;

                            (6)  sell assets;

                            (7)  issue or sell capital stock of certain of our
                                 subsidiaries; and

                            (8)  in our case, consolidate, merge or sell
                                 substantially all of our assets.

                            Each of these limitations is subject to a number of
                            important qualifications and exceptions. See
                            "Description of Notes--Certain Covenants."


                                       9
<PAGE>

Absence of a Public Market
 for the Notes..............
                              The new notes are new issues of securities for
                              which there is currently no established trading
                              market. There can be no assurance as to the
                              development of liquidity of any market for any of
                              the notes. Level 3 does not intend to apply for
                              listing of any of the notes on any securities
                              exchange. See "Risk Factors--There is no public
                              market for the new notes, so you may be unable to
                              sell the new notes."

        Ratio of Earnings to Fixed Charges and Preferred Stock Dividends

    Our ratio of earnings to fixed charges and preferred stock dividends for
each of the periods indicated was as follows:

<TABLE>
<CAPTION>
                                        Three Months
                                         Ended March
                                             31,           Fiscal Year Ended
                                        --------------  ------------------------
                                         2000    1999   1999 1998 1997 1996 1995
                                        ------  ------  ---- ---- ---- ---- ----
<S>                                     <C>     <C>     <C>  <C>  <C>  <C>  <C>
Ratio of earnings to fixed charges and
 preferred
 stock dividends.......................    --      --   --   --   5.73 3.87 --
</TABLE>

    For this ratio, earnings consist of earnings (loss) before income taxes,
minority interest and discontinued operations plus fixed charges excluding
capitalized interest. Fixed charges and preferred stock dividends consist of
interest expensed and capitalized, plus the portion of rent expense under
operating leases deemed by us to be representative of the interest factor,
plus, prior to September 30, 1995, preferred stock dividends on preferred stock
of our former subsidiary, MFS. We had deficiencies of earnings to fixed charges
and preferred stock dividends of approximately $292 million and $137 million
for the three months ended March 31, 2000 and 1999, respectively, approximately
$695 million for the fiscal year ended 1999, approximately $36 million for the
fiscal year ended 1998 and approximately $32 million for the fiscal year ended
1995.

                                       10
<PAGE>

                                  Risk Factors

    Before tendering original notes, prospective participants in the exchange
offer should carefully consider the following risks. The new notes, like the
original notes, entail the following risks:

We are dependent on our new business plan that relies on internet protocol
technology

    The current status of our business plan makes evaluation of its risks and
rewards extremely difficult and speculative. The business plan depends upon a
shift in providing communications services over internet protocol based
networks instead of the traditional public-switched networks. Our strategy
assumes that the technology that we and others have developed solves the
problems currently associated with internet protocol based applications and
will scale for full deployment, and that others will continue to develop new
uses and applications for internet protocol based networks. The success of our
business plan depends on other assumptions as well, such as our ability to use
open, non-proprietary interfaces in our network software and hardware that
allow us to buy equipment in the future from multiple vendors. We must generate
substantial traffic volume at acceptable prices on our network in order to
realize the anticipated operating efficiencies and cost benefits of the
network.

Substantial operating losses are expected for the foreseeable future

    The development of our business plan requires significant capital
expenditures. We expect to incur a large portion of these capital expenditures
before we receive any significant related revenues from our business plan.
Because of these capital expenditures and the related early operating expenses,
we expect substantial negative operating cash flow and net losses for the
foreseeable future. For the three months ended March 31, 2000, we incurred a
loss from continuing operations of $271 million and for 1999, we incurred a
loss from continuing operations of $487 million. We expect our operating losses
for the foreseeable future to be substantially higher. We may never establish a
significant customer base for our communications and information services
business, and even if we do, we may continue to sustain substantial negative
operating cash flow and net losses as a result of low prices or higher costs.
In addition, we will incur substantially higher selling, general and
administrative expenses as we develop our business plan.

    Since our business plan is a significant expansion of our communications
and information services business, we believe that our historical financial
results will not provide investors with a meaningful indicator of our future
financial condition or results of operations.

A failure to finance our substantial capital requirements could adversely
affect our business plan

    The implementation of our business plan and our ability to meet our
projected growth depends on our ability to secure substantial additional
financing. We estimate that the implementation of our business plan, as
currently contemplated, requires between $13 and $14 billion over the 10-year
period of the plan. However, the amount of additional financing we need could
be higher than we currently estimate. The implementation of our business plan
and our future financial results could be adversely affected if we are
unsuccessful in obtaining required financing through:

  .   raising debt or equity capital at the times we need on terms that we
      consider acceptable;

  .   generating cash flow from our operations; and

  .   offering others fiber optic capacity on our network or access to our
      conduits.

    If we fail to obtain the required financing, we may be required to delay or
abandon some of our future expansion or spending plans. Our existing level of
debt and its terms may limit our ability to raise additional capital and
otherwise restrict our activities. Additional equity issuances would dilute
your ownership interest. In addition, if our operations do not produce positive
cash flow in sufficient amounts to pay our financing obligations, our future
financial results and our ability to implement our business plan will be
materially and adversely affected.

                                       11
<PAGE>

Difficulties in constructing our network could increase its estimated cost and
delay its scheduled completion

    The construction, operation and any upgrading of our network is a
significant undertaking. Administrative, technical, operational and other
problems that could arise may be more difficult to address and solve due to the
significant size and complexity of the planned network. We are also dependent
on timely performance by third-party suppliers and contractors. In addition,
important aspects of our network, such as voice capability, will rely on
technology that is in the development stage or that is largely commercially
unproven. This new technology also may not be compatible with existing
technology. Many of these factors and problems are beyond our control. As a
result, the entire network may not be completed as planned for the cost and in
the time frame that we currently estimate. We may be materially adversely
affected as a result of any significant increase in the estimated cost of the
network or any significant delay in its anticipated completion.

    After its initial completion, future expansions and adaptations of our
network's electronic and software components may be necessary in order to
respond to:

  .   a growing number of customers;

  .   increased demands by our customers to transmit larger amounts of data;

  .   changes in our customers' service requirements; and

  .   technological advances by our competitors.

    Any expansion or adaptation of our network will require substantial
additional financial, operational and managerial resources. If we are unable to
expand or adapt our network to respond to these developments on a timely basis
and at a commercially reasonable cost, then our business will be materially
adversely affected.

Our business could be materially affected by problems arising from the
commercial deployment of our voice technology for internet protocol networks

    We and others have developed technology that we believe will avoid the need
for customers on a private internet protocol based network to dial access codes
or follow other special procedures to initiate a voice call. We began to
commercially deploy this technology for long distance voice service in December
1999 and problems with it may be discovered as it continues to be deployed. Our
efforts to commercially deploy this technology in a timely manner and at an
acceptable cost may not be successful, and such a failure could have a material
adverse effect on us. We are currently testing some features associated with
local voice service such as caller ID, voicemail and call forwarding. To date,
internet protocol voice telephony using the public internet has had significant
problems with quality, latency, reliability and security. Until we more fully
commercially deploy our voice telephony services, we cannot predict whether our
plans for solving these problems will work.

    The commercial deployment of our voice telephony services also requires
that we develop related business support systems. Our failure to develop these
business support systems could have an adverse effect on the commercial
deployment of these services.

Our business plan requires the development of effective business support
systems to implement customer orders and to provide and bill for services

    Our business plan depends on our ability to develop effective business
support systems. This is a complicated undertaking requiring significant
resources and expertise and support from third-party vendors. Business support
systems are needed for:

  .   implementing customer orders for services;

  .   provisioning, installing and delivering these services; and

                                       12
<PAGE>

  .   monthly billing for these services.

    Since our business plan provides for rapid growth in the number and volume
of products and services we offer, we need to develop these business support
systems on a schedule sufficient to meet our proposed service rollout dates. In
addition, we will require these business support systems to expand and adapt
with our rapid growth. The failure to develop effective business support
systems could have a material adverse effect on our ability to implement our
business plan.

We may be unable to hire and retain sufficient qualified personnel; the loss of
any of our key executive officers could adversely affect us

    We believe that our future success will depend in large part on our ability
to attract and retain highly skilled, knowledgeable, sophisticated and
qualified managerial, professional and technical personnel. To implement our
business plan, we need to have a substantial number of additional employees. We
have experienced significant competition in attracting and retaining personnel
who possess the skills that we are seeking. As a result of this significant
competition, we may experience a shortage of qualified personnel. Our
businesses are managed by a small number of key executive officers,
particularly James Q. Crowe, Chief Executive Officer, R. Douglas Bradbury,
Chief Financial Officer, Kevin J. O'Hara, Chief Operating Officer and Colin
V.K. Williams, Executive Vice President. The loss of any of these key executive
officers could have a material adverse effect on us.

Inability to manage effectively our planned rapid expansion could adversely
affect our operations

    Our business plan contemplates rapid expansion of our business for the
foreseeable future. This growth will increase our operating complexity and
require that we, among other things, rapidly:

  .   expand our employee base with highly skilled personnel;

  .   develop, introduce and market new products and services;

  .   integrate any acquired operations and joint ventures;

  .   secure space suitable for colocation facilities;

  .   develop financial and management controls and systems; and

  .   control expenses related to our business plan.

    The significant size and complexity of our planned network and planned rate
of expansion will make it more difficult to satisfy these requirements. Our
failure to satisfy any of these requirements, or otherwise manage our growth
effectively, could have a material adverse effect on us.

    If we were to make strategic investments, acquisitions or joint ventures,
our resources and management time could be diverted and we may be unable to
integrate them successfully with our existing network and services.

We must obtain and maintain permits and rights-of-way to develop our network

    The operation of our networks requires that we obtain many local franchises
and other permits. We also must obtain rights to use underground conduit and
aerial pole space and other rights-of-way and fiber capacity. The process of
obtaining these franchises, permits and rights is time consuming and
burdensome. If we are unable, on acceptable terms and on a timely basis, to
obtain and maintain the franchises, permits and rights needed to implement our
business plan, the buildout of our network could be materially adversely
affected. In addition, the cancellation or non-renewal of the franchises,
permits or rights we do obtain, or the loss of the rights-of-way we have
obtained, could materially adversely affect us.

                                       13
<PAGE>

Termination of relationships with key suppliers could cause delay and costs

    Until we complete the company-owned portion of our network, we will lease
substantially all of our intercity communications capacity in North America,
Europe and possibly elsewhere. As a result, we will be dependent on the
providers of this capacity. In addition, we intend to lease a significant
amount of capacity from local exchange carriers to connect our customers to our
gateway sites. We are also dependent on third-party suppliers for substantial
amounts of fiber, conduit, computers, software, switches/routers and related
components that we will assemble and integrate into our network. If any of
these relationships are terminated or a supplier fails to provide reliable
services or equipment and we are unable to reach suitable alternative
arrangements quickly, we may experience significant delays and additional
costs. If that happens, we could be materially adversely affected.

Our industry is highly competitive with participants that have greater
resources and existing customers

    The communications and information services industry is highly competitive.
Many of our existing and potential competitors have financial, personnel,
marketing and other resources significantly greater than ours. Many of these
competitors have the added competitive advantage of an existing customer base.
In addition, significant new competitors could arise as a result of:

  .   increased consolidation and strategic alliances in the industry
      resulting from recent Congressional and FCC actions;

  .   allowing foreign carriers to compete in the U.S. market;

  .   further technological advances; and

  .   further deregulation and other regulatory initiatives.

If we are unable to compete successfully, our business could be materially
adversely affected.

Rapid technological changes can lead to further competition

    The communications and information services industry is subject to rapid
and significant changes in technology. In addition, the introduction of new
products or technologies may reduce the cost or increase the supply of certain
services similar to those that we plan to provide. As a result, our most
significant competitors in the future may be new entrants to the communications
and information services industry. These new entrants may not be burdened by an
installed base of outdated equipment. Technological changes and the resulting
competition on our operations could have a material adverse effect on us.

Increased industry capacity and other factors could lead to lower prices for
our products and services

    AT&T, MCI WorldCom, Sprint and Qwest currently own nationwide long distance
fiber optic networks. MCI WorldCom has entered into an agreement to acquire
Sprint. In Europe, GTS, MCI WorldCom and Viatel currently own intercity
networks. Qwest's network, as well as the intercity networks being deployed by
others, including Broadwing and Williams Communications in the United States
and KPNQwest, i-21 and Global Crossing in Europe, use advanced technology
similar to that of our network. In addition, there are numerous local and
regional networks. Increased capacity may cause significant decreases in the
prices for services. Prices may also decline due to capacity increases
resulting from technological advances and strategic alliances, such as long
distance capacity purchasing alliances among regional Bell operating companies.
These price declines may be particularly severe if recent trends causing
increased demand for capacity, such as Internet usage, change. Rapid growth in
the use of the Internet is a recent phenomenon, and may not continue at the
same rate. Increased competition has already led to a decline in rates charged
for various telecommunications services.

                                       14
<PAGE>

We are subject to significant regulation that could change in an adverse manner

    Communications services are subject to significant regulation at the
federal, state, local and international levels. These regulations affect us and
our existing and potential competitors. Delays in receiving required regulatory
approvals, completing interconnection agreements with incumbent local exchange
carriers or the enactment of new and adverse regulations or regulatory
requirements may have a material adverse effect on us. In addition, future
legislative, judicial, and regulatory agency actions could have a material
adverse effect on us.

    Recent federal legislation provides for a significant deregulation of the
U.S. telecommunications industry, including the local exchange, long distance
and cable television industries. This legislation remains subject to judicial
review and additional FCC rulemaking. As a result, we can not predict the
legislation's effect on our future operations. Many regulatory actions are
under way or are being contemplated by federal and state authorities regarding
important items. These actions could have a material adverse effect on us.

Canadian law currently does not permit us to offer services in Canada

    Ownership of facilities that originate or terminate traffic in Canada is
currently limited to Canadian carriers. This restriction will block our entry
into the Canadian market unless appropriate arrangements can be made to address
it.

Potential regulation of internet service providers could adversely affect our
operations

    The FCC has to date treated internet service providers as enhanced service
providers. Enhanced service providers are currently exempt from federal and
state regulations governing common carriers, including the obligation to pay
access charges and contribute to the universal service fund. The FCC is
currently examining the status of internet service providers and the services
they provide. If the FCC were to determine that internet service providers, or
the services they provide, are subject to FCC regulation, including the payment
of access charges and contribution to the universal service funds, it could
have a material adverse effect on us.

    The FCC has also been considering whether local carriers are obligated to
pay compensation to each other for the transport and termination of calls to
internet service providers when a local call is placed from an end user of one
carrier to an internet service provider served by a competing local exchange
carrier. Recently, the FCC determined that it had no rule addressing inter-
carrier compensation for these calls. In the absence of a federal rule, state
commissions may elect not to require payment of reciprocal compensation for
these calls. The FCC also released for comment alternative federal rules to
govern compensation for these calls in the future. If state commissions, the
FCC or the courts determine that inter-carrier compensation does not apply,
carriers, including us, may be unable to recover their costs or will be
compensated at a significantly lower rate and may be required to refund
compensation previously paid.

Network failure or delays and errors in transmissions expose us to potential
liability

    Our network will use a collection of communications equipment, software,
operating protocols and proprietary applications for the high speed
transportation of large quantities of data among multiple locations. Given the
complexity of our proposed network, it may be possible that data will be lost
or distorted. Delays in data delivery may cause significant losses to a
customer using our network. Our network may also contain undetected design
faults and software bugs that, despite our testing, may be discovered only
after the network has been installed and is in use. The failure of any
equipment or facility on the network could result in the interruption of
customer service until we effect necessary repairs or install replacement
equipment. Network failures, delays and errors could also result from natural
disasters, power losses, security breaches and computer viruses. These
failures, faults or errors could cause delays, service interruptions, expose us
to customer liability or require expensive modifications that could have a
material adverse effect on our business.

                                       15
<PAGE>

Intellectual property and proprietary rights of others could prevent us from
using necessary technology to provide internet protocol voice services

    While we do not know of any technologies that are patented by others that
we believe are necessary for us to provide internet protocol voice services,
this necessary technology may in fact be patented by other parties either now
or in the future. If this technology were held under patent by another person,
we would have to negotiate a license for the use of that technology. We may not
be able to negotiate such a license at a price that is acceptable to us. The
existence of such a patent, or our inability to negotiate a license for any
such technology on acceptable terms, could force us to cease using the
technology and offering products and services incorporating the technology.

Our subsidiaries must make payments to us in order for us to make payments on
the notes

    We are a holding company with no material assets other than the stock of
our subsidiaries. Accordingly, we depend upon cash payments from our
subsidiaries to meet our payment obligations, including our obligation to pay
you as a holder of notes. Our subsidiaries may not generate earnings sufficient
to enable us to meet our payment obligations. The senior secured credit
facility imposes significant restrictions on the ability of our subsidiaries to
make distributions or other payments to us. In addition, our subsidiaries may
enter into debt agreements in the future that contain similar restrictions.

Because the notes are structurally subordinated to the obligations of our
subsidiaries, you may not be fully repaid if we become insolvent

    Substantially all of our operating assets are held directly by our
subsidiaries. Holders of any preferred stock of any of our subsidiaries and
creditors of any of our subsidiaries, including trade creditors, have and will
have claims relating to the assets of that subsidiary that are senior to the
notes and our other outstanding debt securities. As a result, the notes and all
of our other senior debt are structurally subordinated to the debts, preferred
stock and other obligations of our subsidiaries. The holders of the notes have
no claim to the assets of any of our subsidiaries. As of March 31, 2000, our
subsidiaries had approximately $2.146 billion in aggregate indebtedness and
other balance sheet liabilities, excluding intercompany liabilities, and $900
million in additional borrowings available under our senior secured credit
facility.

Because the notes that you hold are unsecured, you may not be fully repaid if
we become insolvent

    The new notes will not be secured by any of our assets or our subsidiaries'
assets. The indentures relating to the new notes and our outstanding notes
permit us to incur secured debt. Our subsidiaries' obligations under our $1.375
billion senior secured credit facility are secured by substantially all of our
assets and are guaranteed by us. If we became insolvent the holders of any
secured debt would receive payments from the assets used as security before you
receive payments.

We have substantial existing debt and will incur substantial additional debt,
so we may be unable to make payments on the notes

    As of March 31, 2000, we had approximately $7.053 billion of indebtedness,
and our subsidiaries had $900 million in additional borrowings available under
our senior secured credit facility. The indentures relating to the notes and
each other issue of our outstanding debt securities permit us to incur
substantial additional debt, and we fully expect to borrow substantial
additional funds, which may include secured borrowings, in connection with
implementing the business plan. A substantial level of debt makes it more
difficult for us to repay you. Substantial amounts of our existing debt will,
and our future debt may, mature prior to the notes.

                                       16
<PAGE>

We may be unable to generate cash flow from which to make payments on the notes

    We had deficiencies in our ratios of earnings to fixed charges and
preferred stock dividends of approximately $292 million for the three months
ended March 31, 2000, approximately $695 million for the fiscal year 1999 and
approximately $36 million for the fiscal year 1998. We expect to incur
substantial net operating losses for the foreseeable future. We may not become
profitable or sustain profitability in the future. Accordingly, we may not have
sufficient funds to make payments on the notes.

Future additional debt that we incur in implementing our business plan may have
a negative effect on our financial flexibility and stability

    Our business plan will require us and our subsidiaries to incur substantial
amounts of additional indebtedness in the future. The extent to which we incur
additional debt, and the restrictive and financial covenants that we will be
subject to, will have important consequences to the holders of the notes. These
include the following:

  .   a potential impairment of our ability to obtain additional financing
      for the business plan, including financing necessary to fund the
      substantial net losses incurred in connection with the business plan;

  .   the requirement that a substantial portion of our cash flow from
      operations must be dedicated to the payment of debt service, thus
      reducing the funds available for the business plan; and

  .   potential limits on our ability to adjust rapidly to changing market
      conditions and vulnerability in the event of a downturn in general
      economic conditions or in the communications and information services
      business.

If we experience a change in control, we may be unable to purchase the notes
you hold as required under the applicable indenture

    Upon the occurrence of certain change of control events, we must make an
offer to purchase all outstanding notes at a purchase price equal to 101% of
the principal amount or the accreted value, as applicable, of the notes, plus
accrued and unpaid interest, if any. We may not have sufficient funds to pay
the purchase price for all notes tendered by holders seeking to accept the
offer to purchase. In addition, the indentures relating to the notes and each
issue of our outstanding and proposed notes, the senior secured credit facility
and our other debt agreements may require us to repurchase the other debt upon
a change in control or may prohibit us from purchasing any notes before their
stated maturity, including upon a change of control. Our failure to purchase
all validly tendered notes would result in an event of default under the
applicable indenture. See "Description of Notes--Certain Covenants--Change of
Control Triggering Event."

Our senior secured credit facility may prohibit us from making payment on the
notes

    Our senior secured credit facility generally does not permit us or our
subsidiaries to make payments on any outstanding indebtedness other than
regularly scheduled interest and principal payments as and when due. As a
result, our senior secured credit facility would prohibit us from making any
payment on the notes in the event that the notes are accelerated or tendered
for repurchase upon a change in control. Any such failure to make payments on
the notes would cause us to default under our indentures, which in turn is
likely to be a default under the senior secured credit facility and other
outstanding and future indebtedness.

There is no public market for the notes, so you may be unable to sell the notes

    The notes are new securities for which there is currently no market.
Consequently, the notes may be relatively illiquid, and you may be unable to
sell your notes. We do not intend to apply for listing of the notes on any
securities exchange or for the inclusion of the notes in any automated
quotation system.

                                       17
<PAGE>

The original issue discount will be included in your gross income for U.S.
federal income tax purposes before you receive any cash payments on the 2010
senior discount notes

    Cash interest on the 2010 senior discount notes generally will not be
payable prior to September 15, 2005. However, because the 2010 senior discount
notes will be issued at a substantial discount to their stated principal amount
at maturity, holders of 2010 senior discount notes will be required to include
original issue discount in gross income for U.S. federal income tax purposes in
advance of receiving cash payments on the 2010 senior discount notes. See
"Certain United States Federal Income Tax Considerations" for a more detailed
discussion of the material U.S. federal income tax consequences applicable to
holders of the 2010 senior discount notes.

If a bankruptcy petition were filed by or against us, you may receive a lesser
amount for a claim relating to the 2010 senior discount notes than you would be
entitled to under the indenture for the 2010 senior discount notes, and you may
realize taxable gain or loss upon payment of your claim

    If a bankruptcy petition were filed by or against Level 3 under the U.S.
Bankruptcy Code after the issuance of the 2010 senior discount notes, the claim
of a holder of 2010 senior discount notes with respect to the accreted value of
such notes may be limited to an amount equal to the sum of:

     (1)  the initial offering price for the 2010 senior discount notes;
          and

     (2)  that portion of the original issue discount that is not deemed to
          constitute "unmatured interest" within the meaning of the U.S.
          Bankruptcy Code.

Any original issue discount that was not amortized as of the date of the
bankruptcy filing would constitute unmatured interest. Accordingly, holders of
the 2010 senior discount notes under these circumstances may receive a lesser
amount than they would be entitled to under the terms of the indenture for the
2010 senior discount notes, even if sufficient funds are available. In
addition, to the extent that the U.S. Bankruptcy Code differs from the Internal
Revenue Code in determining the method of amortization of original issue
discount, a holder of 2010 senior discount notes may realize taxable gain or
loss upon payment of that holder's claim in bankruptcy.

Original issue discount relating to the 2010 senior discount notes may not be
deductible by us until paid

    Depending upon the actual yield to maturity of the 2010 senior discount
notes, they may constitute applicable high yield debt obligations, or AHYDOs,
for federal income tax purposes. If they are, we may not deduct any original
issue discount, or OID, that accrues on the 2010 senior discount notes until we
actually pay it. Also, it is possible that a portion of the OID will never be
deductible by us.

PKS Systems Integration LLC may have liability from its Year 2000 customer
projects

    PKS Information Services, Inc. derived a substantial portion of its revenue
from projects that its subsidiary, PKS Systems Integration LLC, or PKSSI,
conducted involving Year 2000 assessment and renovation services. These
activities of PKSSI expose us to potential risks that may include problems with
services provided by PKSSI to its customers and the potential for claims
arising under PKSSI's customer contracts. PKSSI's attempts to contractually
limit its exposure to liability for Year 2000 compliance issues may not be
effective.

Foreign currency exchange rate fluctuations or repatriation could result in
losses

    Our international expansion will cause our results of operations and the
value of our assets to be affected by the exchange rates between the U.S.
dollar and the currencies of the additional countries in which we have
operations and assets. In some of these countries, prices of our products and
services will be denominated in a

                                       18
<PAGE>

currency other than the U.S. dollar. As a result, we may experience economic
losses solely as a result of foreign currency exchange rate fluctuations,
including a foreign currency's devaluation against the U.S. dollar. We may also
in the future acquire interests in companies that operate in countries where
the removal or conversion of currency is restricted. In addition, similar
restrictions could be imposed in countries where we conduct business after we
begin our operations.

Environmental liabilities from our historical operations could be material

    Our operations and properties are subject to a wide variety of laws and
regulations relating to environmental protection, human health and safety.
These laws and regulations include those concerning the use and management of
hazardous and non-hazardous substances and wastes. We have made and will
continue to have to make significant expenditures relating to our environmental
compliance obligations. We may not at all times be in compliance with all these
requirements.

    In connection with certain historical operations, we are a party to, or
otherwise involved in, legal proceedings under state and federal law involving
investigation and remediation activities at approximately 110 contaminated
properties. We could be held liable, jointly and severally, and without regard
to our own fault, for such investigation and remediation. The discovery of
additional environmental liabilities related to our historical operations or
changes in existing environmental requirements could have a material adverse
effect on us.

Significant future declines in cash flow from coal operations

    Approximately 40% of our net revenues for 1999 were attributable to our
coal mining operations. The level of cash flows generated in recent periods by
our coal operations will not continue after the year 2000. These cash flow
levels will decrease because the delivery requirements under our current long-
term contracts decline significantly after that date. Moreover, without those
contracts, our coal mining operations would not be able to operate profitably
by selling their production on the spot markets. A substantial majority of our
coal mining revenues are provided by three customer contracts.

Potential liabilities and claims arising from our coal operations could be
significant

    Our coal operations are subject to extensive laws and regulations that
impose stringent operational, maintenance, financial assurance, environmental
compliance, reclamation, restoration and closure requirements. These
requirements include those governing air and water emissions, waste disposal,
worker health and safety, benefits for current and retired coal miners, and
other general permitting and licensing requirements. We may not at all times be
in compliance with all of these requirements. Liabilities or claims associated
with this non-compliance could require us to incur material costs or suspend
production. Mine reclamation costs that exceed our reserves for these matters
also could require us to incur material costs.

                                       19
<PAGE>

                Information Regarding Forward-Looking Statements

    This prospectus contains or incorporates by reference forward-looking
statements. These forward-looking statements include, among others, statements
concerning:

  .   the business plan, its advantages and our strategy for implementing
      the business plan;

  .   anticipated growth of the communications and information services
      industry;

  .   plans to devote significant management time and capital resources to
      our business;

  .   expectations as to our future revenues, margins, expenses and capital
      requirements;

  .   anticipated dates on which we will begin providing certain services or
      reach specific milestones in the business plan; and

  .   other statements of expectations, beliefs, future plans and
      strategies, anticipated developments and other matters that are not
      historical facts.

    You should be aware that these forward-looking statements are subject to
risks and uncertainties, including financial, regulatory, environmental,
industry growth and trend projections, that could cause actual events or
results to differ materially from those expressed or implied by the statements.
The most important factors that could prevent us from achieving our stated
goals include, but are not limited to, our failure to:

  .   achieve and sustain profitability based on the creation and
      implementation of our advanced, international, facilities based
      communications network based on internet protocol technology;

  .   overcome significant early operating losses;

  .   produce sufficient capital to fund the business plan;

  .   develop financial and management controls, as well as additional
      controls of operating expenses as well as other costs;

  .   attract and retain qualified management and other personnel;

  .   install on a timely basis the switches/routers, fiber optic cable and
      associated electronics required for successful implementation of the
      business plan;

  .   successfully complete commercial testing of our softswitch technology
      for voice and fax transmission services;

  .   negotiate new and maintain existing peering agreements; and

  .   develop and implement effective business support systems for
      processing customer orders and provisioning.

    For a discussion of certain of these factors, see "Risk Factors."

                                       20
<PAGE>

                                Use of Proceeds

    Level 3 will not receive any proceeds from the issuance of the new notes in
the exchange offer. The new notes will evidence the same debt as the original
notes surrendered in exchange for the new notes. Accordingly, the issuance of
the new notes will not result in any change in the indebtedness of Level 3.

    The net proceeds to Level 3 of the placement of the original notes were
approximately $1,374,466,000, after deducting expenses. Our net proceeds from
that placement are being used for working capital, capital expenditures,
acquisitions and other general corporate purposes in connection with the
implementation of our business plan.

    Pending this utilization, we are investing the net proceeds in short-term
investments.

                                 Capitalization

    The following table sets forth the consolidated capitalization of Level 3
as of March 31, 2000.

<TABLE>
<CAPTION>
                                                              March 31, 2000
                                                           ---------------------
                                                           (dollars in millions)
<S>                                                        <C>
Cash and marketable securities............................        $ 7,680
                                                                  =======
Total long-term debt, less current portion................          7,047
Total stockholders' equity................................          5,571
                                                                  -------
Total capitalization......................................        $12,618
                                                                  =======
</TABLE>


                                       21
<PAGE>

                               The Exchange Offer

Purpose of the Exchange Offer

    On February 29, 2000, Level 3 privately placed the original notes in a
transaction exempt from registration under the Securities Act. Accordingly, the
original notes may not be reoffered, resold or otherwise transferred in the
U.S. unless so registered or unless an exemption from the Securities Act
registration requirements is available. In the registration agreement, Level 3
has agreed with the initial purchasers of the original notes to, at our own
cost:

  (1) file a registration statement with the SEC relating to the exchange
      offer within 90 days after February 29, 2000;

  (2) use our best effort to cause the exchange offer registration statement
      to be declared effective under the Securities Act within 150 days
      after February 29, 2000; and

  (3) upon effectiveness of the exchange offer registration statement, offer
      new notes in exchange for surrender of original notes.

In addition, Level 3 has agreed to keep the exchange offer open for at least 30
days, or longer if required by applicable law, after the date notice of the
exchange offer is mailed to the holders of the original notes. The new notes
are being offered under this prospectus to satisfy these obligations of Level 3
under the registration agreement.

Terms of the Exchange

    Upon the terms and subject to the conditions contained in this prospectus
and in the letters of transmittal that accompany this prospectus, Level 3 is
offering to exchange $1,000 in principal amount or, in the case of the 2010
senior discount notes, $1,000 in principal amount at maturity of new notes for
each $1,000 in principal amount or, in the case of the 2010 senior discount
notes, $1,000 in principal amount at maturity of original notes. The terms of
the new notes are substantially identical to the terms of the original notes
for which they may be exchanged in the exchange offer, except that:

  (1) the new notes will be freely transferable, other than as described in
      this prospectus;

  (2) will not contain any legend restricting their transfer;

  (3) holders of the new notes will not be entitled to certain rights of the
      holders of the original notes under the registration agreement, which
      rights will terminate on completion of the exchange offer; and

  (4) the new notes will not contain any provisions regarding the payment of
      special interest.

The new notes will evidence the same debt as the original notes and will be
entitled to the benefits of the indentures. See "Description of Notes."

    The exchange offer is not conditioned on any minimum aggregate principal
amount or, in the case of the 2010 senior discount notes, any minimum aggregate
principal amount at maturity of original notes being tendered for exchange.

    Based on interpretations by the SEC's staff in no-action letters issued to
other parties, Level 3 believes that holders of new notes issued in the
exchange offer may transfer the new notes without complying with the
registration and prospectus delivery requirements of the Securities Act if the
holders:

  (1) acquired the new notes in the ordinary course of the holders'
      business;

  (2) are not engaged in, and do not intend to engage in, and have no
      arrangement or understanding with any person to participate in, a
      distribution of the new notes;

  (3) are not affiliates of Level 3 within the meaning of Rule 405 under the
      Securities Act;


                                       22
<PAGE>

  (4) are not broker-dealers who acquired original notes directly from
      Level 3; and

  (5) are not broker-dealers who acquired original notes as a result of
      market-making or other trading activities.

See "Plan of Distribution."

    Each broker-dealer that receives new notes for its own account in the
exchange offer must acknowledge that it will deliver a prospectus in connection
with any resale of those new notes. Each of the letters of transmittal that
accompany this prospectus states that by so acknowledging and by delivering a
prospectus, a broker-dealer will not be deemed to admit that it is an
underwriter within the meaning of the Securities Act. A participating broker-
dealer may use this prospectus, as it may be amended or supplemented from time
to time, in connection with resales of new notes received in exchange for
original notes where those new notes were acquired by the broker-dealer as a
result of market-making activities or other trading activities. Level 3 has
agreed that, starting on the date of this prospectus and ending on the close of
business on the day that is 180 days following the date of this prospectus, it
will make this prospectus available to any broker-dealer for use in connection
with any resale of this kind.

    Tendering holders of original notes will not be required to pay brokerage
commissions or fees or, subject to the instructions in the applicable letter of
transmittal, transfer taxes relating to the exchange of original notes for new
notes in the exchange offer.

Shelf Registration Statement

    If:

  (1) applicable interpretations of the staff of the SEC do not permit Level
      3 to effect an exchange offer,

  (2) for any other reason the exchange offer registration statement is not
      declared effective within 150 days after February 29, 2000 or the
      exchange offer is not completed within 180 days after February 29,
      2000,

  (3) the initial purchasers so request for original notes not eligible to
      be exchanged for new notes in the exchange offer, or

  (4) any holder of original notes, other than an initial purchaser, is not
      eligible to participate in the exchange offer or does not receive
      freely tradable new notes in the exchange offer other than by reason
      of the holder being an affiliate of Level 3,

Level 3 will, at its cost:

  (1) as promptly as practicable, file a shelf registration statement
      covering resales of the original notes or the new notes, as the case
      may be,

  (2) use its best efforts to cause the shelf registration statement to be
      declared effective under the Securities Act, and

  (3) use its best efforts to keep the shelf registration statement
      effective until two years after its effective date.

    For purposes of determining whether Level 3 is obligated to file a shelf
registration statement, the requirement that a participating broker-dealer
deliver this prospectus in connection with sales of new notes will not result
in those new notes being deemed not freely tradable.

    If Level 3 files a shelf registration statement, it will, among other
things:

  (1) provide to each holder for whom the shelf registration statement was
      filed copies of the prospectus which is a part of the shelf
      registration statement;

                                       23
<PAGE>

  (2) notify each of those holders when the shelf registration statement has
      become effective; and

  (3) take other actions as are required to permit unrestricted resales of
      the original notes or the new notes, as the case may be.

A holder selling original notes or new notes under the shelf registration
statement generally must be named as a selling security holder in the related
prospectus and must deliver a prospectus to purchasers. Consequently, the
holder will be subject to the civil liability provisions under the Securities
Act in connection with those sales and will be bound by any applicable
provisions of the registration agreement, including specified indemnification
obligations.

Special Interest

    Special interest will accrue on the principal amount or accreted value, as
applicable, on the original notes and the new notes, in addition to the stated
interest on the original notes and the new notes, from and including the date
on which a registration default occurs to but excluding the date on which all
registration defaults have been cured.

    The occurrence of any of the following is a registration default:

  (1) neither the exchange offer registration statement nor the shelf
      registration statement has been filed with the SEC on or before the
      90th day following February 29, 2000,

  (2) neither the exchange offer registration statement nor the shelf
      registration statement has been declared effective on or before the
      150th day following February 29, 2000,

  (3) neither the exchange offer has been completed nor the shelf
      registration statement has been declared effective on or before the
      180th day following February 29, 2000, or

  (4) after either the exchange offer registration statement or the shelf
      registration statement has been declared effective, that registration
      statement ceases to be effective or usable, subject to certain
      exceptions, in connection with resales of original notes or new notes
      in accordance with and during the periods specified in the
      registration agreement.

    Special interest will accrue at a rate of 0.50% per annum on the principal
amount or accreted value, as applicable, during the 90-day period after the
occurrence of the registration default and will increase by 0.25% per annum at
the end of each subsequent 90-day period. In no event will the rate exceed
1.00% per annum on the principal amount or accreted value, as applicable. If
the exchange offer is completed on the terms and within the period contemplated
by this prospectus, no special interest will be payable.

    The summary of the provisions of the registration agreement contained in
this prospectus does not purport to be complete. This summary is subject to and
is qualified in its entirety by reference to all the provisions of the
registration agreement, a copy of which is an exhibit to the registration
statement of which this prospectus is a part.

Expiration Date; Extensions; Termination; Amendments

    The expiration date of the exchange offer is 5:00 p.m., New York City time,
on July 12, 2000, unless Level 3 in its sole discretion extends the period
during which the exchange offer is open. In that case, the expiration date will
be the latest time and date to which the exchange offer is extended. Level 3
reserves the right to extend the exchange offer at any time and from time to
time before the expiration date by giving written notice to the exchange agent,
The Bank of New York and by timely public announcement. Unless otherwise
required by applicable law or regulation, the public announcement will be made
by a release to the Dow Jones News Service. During any extension of the
exchange offer, all original notes previously tendered in the exchange offer
will remain subject to the exchange offer.


                                       24
<PAGE>

    The initial exchange date will be the first business day following the
expiration date. Level 3 expressly reserves the right to:

  (1) terminate the exchange offer and not accept for exchange any original
      notes for any reason, including if any of the events described below
      under "--Conditions to the Exchange Offer" shall have occurred and
      shall not have been waived by Level 3; and

  (2) amend the terms of the exchange offer in any manner.

    If any termination or amendment occurs, Level 3 will notify the exchange
agent in writing and will either issue a press release or give written notice
to the holders of the original notes as promptly as practicable. Unless Level 3
terminates the exchange offer prior to 5:00 p.m., New York City time, on the
expiration date, Level 3 will exchange the new notes for the original notes on
the exchange date.

    If:

  (1) Level 3 waives any material condition to the exchange offer or amends
      the exchange offer in any other material respect; and,

  (2) at the time that notice of this waiver or amendment is first
      published, sent or given to holders of original notes in the manner
      specified above, the exchange offer is scheduled to expire at any time
      earlier than the fifth business day from, and including, the date that
      the notice is first so published, sent or given,

then the exchange offer will be extended until that fifth business day.

    This prospectus and the letters of transmittal and other relevant materials
will be mailed by Level 3 to record holders of original notes. In addition,
these materials will be furnished to brokers, banks and similar persons whose
names, or the names of whose nominees, appear on the lists of holders for
subsequent transmittal to beneficial owners of original notes.

How to Tender

    The tender to Level 3 of original notes according to one of the procedures
described below will constitute an agreement between that holder of original
notes and Level 3 in accordance with the terms and subject to the conditions
set forth in this prospectus and in the letter of transmittal.

    General Procedures. A holder of an original note may tender them by:

  (1)  properly completing and signing the applicable letter of transmittal
       or a facsimile of the letter of transmittal and delivering them,
       together with the certificate or certificates representing the
       original notes being tendered and any required signature guarantees,
       or a timely confirmation of a book-entry transfer according to the
       procedure described below, to the exchange agent at its address set
       forth below under "-- Exchange Agent" on or before the expiration
       date; or

  (2) complying with the guaranteed delivery procedures described below.

All references in this prospectus to a letter of transmittal include a
facsimile of the letter of transmittal.

    If tendered original notes are registered in the name of the signer of the
applicable letter of transmittal and the new notes to be issued in exchange for
accepted original notes are to be issued, and any untendered original notes are
to be reissued, in the name of the registered holder, the signature of the
signer need not be guaranteed. In any other case, the tendered original notes
must be endorsed or accompanied by written instruments of transfer in form
satisfactory to Level 3. They must also be duly executed by the registered
holder. In addition, the signature on the endorsement or instrument of transfer
must be guaranteed by an eligible guarantor institution that is a member of a
recognized signature guarantee medallion program within the meaning of Rule
17Ad-15 under the Exchange Act. If the new notes and/or original notes not
exchanged are to be delivered to an address other than that of the registered
holder appearing on the note register for the original notes, an eligible
guarantor institution must guarantee the signature on the applicable letter of
transmittal.

                                       25
<PAGE>

    Any beneficial owner whose original notes are registered in the name of a
broker, dealer, commercial bank, trust company or other nominee and who wishes
to tender original notes should contact the holder promptly and instruct it to
tender on the beneficial owner's behalf. If the beneficial owner wishes to
tender the original notes itself, the beneficial owner must either make
appropriate arrangements to register ownership of the original notes in its
name or follow the procedures described in the immediately preceding paragraph.
The beneficial owner must make these arrangements or follow these procedures
before completing and executing the applicable letter of transmittal and
delivering the original notes. The transfer of record ownership may take
considerable time.

    Book-Entry Transfer. The exchange agent will make a request to establish an
account for the original notes at the book-entry transfer facility, The
Depository Trust Company, or DTC, for purposes of the exchange offer within two
business days after receipt of this prospectus. Subject to the establishment of
the account, any financial institution that is a participant in the book-entry
transfer facility's systems may make book-entry delivery of original notes by
causing the book-entry transfer facility to transfer the original notes into
the exchange agent's account at the book-entry transfer facility in accordance
with the facility's procedures. However, although delivery of original notes
may be effected through book-entry transfer, the applicable letter of
transmittal, with any required signature guarantees and any other required
documents, must, in any case, be transmitted to and received by the exchange
agent at the address set forth below under "--Exchange Agent" on or before the
expiration date or the guaranteed delivery procedures described below must be
complied with.

    The method of delivery of original notes and all other documents is at the
election and risk of the holder. If sent by mail, it is recommended that the
holder use registered mail, return receipt requested, obtain proper insurance,
and make the mailing sufficiently in advance of the expiration date to permit
delivery to the exchange agent on or before the expiration date.

    Unless an exemption applies under the applicable law and regulations
concerning backup withholding of federal income tax, the exchange agent will be
required to withhold 31% of the gross proceeds otherwise payable to a holder in
the exchange offer if the holder does not provide the holder's taxpayer
identification number and certify that the number is correct. Each tendering
holder should complete and sign the main signature form and the Substitute Form
W-9 included as part of the letter of transmittal, so as to provide the
information and certification necessary to avoid backup withholding. This will
not be required, however, if an applicable exemption exists and is proved in a
manner satisfactory to Level 3 and the exchange agent.

    Guaranteed Delivery Procedures. If a holder desires to accept the exchange
offer and time will not permit a letter of transmittal or original notes to
reach the exchange agent before the expiration date, a tender may be effected
if the exchange agent has received at its office listed under "--Exchange
Agent" below on or before the expiration date a letter, telegram or facsimile
transmission from an eligible guarantor institution that:

  (1) sets forth the name and address of the tendering holder, the names in
      which the original notes are registered and, if possible, the
      certificate numbers of the original notes to be tendered; and

  (2) states that the tender is being made thereby; and

  (3) guarantees that within three New York Stock Exchange trading days
      after the date of execution of the letter, telegram or facsimile
      transmission by the eligible guarantor institution, the original
      notes, in proper form for transfer, will be delivered by the eligible
      guarantor institution together with a properly completed and duly
      executed letter of transmittal and any other required documents.

Unless original notes being tendered by the above-described method or a timely
confirmation of a book-entry transfer are deposited with the exchange agent
within the time period described above, accompanied or

                                       26
<PAGE>

preceded by a properly completed letter of transmittal and any other required
documents, Level 3 may reject the tender. Copies of a notice of guaranteed
delivery which may be used by eligible guarantor institutions for the purposes
described in this paragraph are being delivered with this prospectus and the
letters of transmittal.

    A tender will be deemed to have been received as of the date when the
tendering holder's properly completed and duly signed letter of transmittal
accompanied by the original notes or a timely confirmation of a book-entry
transfer is received by the exchange agent. Issuances of new notes in exchange
for original notes tendered by an eligible guarantor institution as described
above will be made only against deposit of the applicable letter of transmittal
and any other required documents and the tendered original notes or a timely
confirmation of a book-entry transfer.

    All questions as to the validity, form, eligibility, including time of
receipt, and acceptance for exchange of any tender of original notes will be
determined by Level 3. Level 3's determination will be final and binding. Level
3 reserves the absolute right to reject any or all tenders not in proper form
or the acceptances for exchange of which may, in the opinion of counsel to
Level 3, be unlawful. Level 3 also reserves the absolute right to waive any of
the conditions of the exchange offer or any defect or irregularities in tenders
of any particular holder whether or not similar defects or irregularities are
waived in the case of other holders. None of Level 3, the exchange agent or any
other person will incur any liability for failure to give notification of any
defects or irregularities in tenders. Level 3's interpretation of the terms and
conditions of the exchange offer, including the letters of transmittal and the
instructions to the letters of transmittal, will be final and binding.

Terms and Conditions of the Letters of Transmittal

    Each letter of transmittal contains, among other things, the following
terms and conditions, which are part of the exchange offer.

    The party tendering original notes for exchange, or the transferor,
exchanges, assigns and transfers the original notes to Level 3 and irrevocably
constitutes and appoints the exchange agent as its agent and attorney-in-fact
to cause the original notes to be assigned, transferred and exchanged. The
transferor represents and warrants that:

  (1) it has full power and authority to tender, exchange, assign and
      transfer the original notes and to acquire new notes issuable upon the
      exchange of the tendered original notes; and

  (2) when the same are accepted for exchange, Level 3 will acquire good and
      unencumbered title to the tendered original notes, free and clear of
      all liens, restrictions, charges and encumbrances and not subject to
      any adverse claim.

The transferor also warrants that it will, upon request, execute and deliver
any additional documents Level 3 deems necessary or desirable to complete the
exchange, assignment and transfer of tendered original notes. The transferor
further agrees that acceptance of any tendered original notes by Level 3 and
the issuance of new notes in exchange shall constitute performance in full by
Level 3 of its obligations under the registration agreement and that Level 3
shall have no further obligations or liabilities under the registration
agreement, except in certain limited circumstances. All authority conferred by
the transferor will survive the death or incapacity of the transferor and every
obligation of the transferor shall be binding upon the heirs, legal
representatives, successors, assigns, executors and administrators of the
transferor.

    By tendering original notes, the transferor certifies that:

  (1) it is not an affiliate of Level 3 within the meaning of Rule 405 under
      the Securities Act, that it is not a broker-dealer that owns original
      notes acquired directly from Level 3 or an affiliate of Level 3, that
      it is acquiring the new notes offered hereby in the ordinary course of
      its business and that it has no arrangement with any person to
      participate in the distribution of the new notes; or


                                       27
<PAGE>

  (2) it is an affiliate, as so defined, of Level 3 or of the initial
      purchasers, and that it will comply with applicable registration and
      prospectus delivery requirements of the Securities Act.

    Each broker-dealer that receives new notes for its own account in the
exchange offer must acknowledge that it will deliver a prospectus in
connection with any resale of those new notes. The letter of transmittal
states that by so acknowledging and by delivering a prospectus, a broker-
dealer will not be deemed to admit that it is an underwriter within the
meaning of the Securities Act.

Withdrawal Rights

    Original notes tendered in the exchange offer may be withdrawn at any time
before the expiration date.

    For a withdrawal to be effective, a written or facsimile transmission
notice of withdrawal must be timely received by the exchange agent at its
address set forth below under "-- Exchange Agent." Any notice of withdrawal
must:

  (1) specify the person named in the applicable letter of transmittal as
      having tendered original notes to be withdrawn;

  (2) specify the certificate numbers of original notes to be withdrawn;

  (3) specify the principal amount of original notes to be withdrawn, which
      must be an authorized denomination;

  (4) state that the holder is withdrawing its election to have those
      original notes exchanged;

  (5) state the name of the registered holder of those original notes; and

  (6) be signed by the holder in the same manner as the original signature
      on the applicable letter of transmittal, including any required
      signature guarantees, or be accompanied by evidence satisfactory to
      Level 3 that the person withdrawing the tender has succeeded to the
      beneficial ownership of the original notes being withdrawn.

The exchange agent will return the properly withdrawn original notes promptly
following receipt of notice of withdrawal. All questions as to the validity of
notices of withdrawals, including time of receipt, will be determined by Level
3, and this determination will be final and binding on all parties.

Acceptance of Original Notes for Exchange; Delivery of New Notes

    Upon the terms and subject to the conditions of the exchange offer, the
acceptance for exchange of original notes validly tendered and not withdrawn
and the issuance of the new notes will be made on the exchange date. For the
purposes of the exchange offer, Level 3 shall be deemed to have accepted for
exchange validly tendered original notes when, as and if Level 3 has given
written notice of acceptance to the exchange agent.

    The exchange agent will act as agent for the tendering holders of original
notes for the purposes of receiving new notes from Level 3 and causing the
original notes to be assigned, transferred and exchanged. Upon the terms and
subject to the conditions of the exchange offer, delivery of new notes to be
issued in exchange for accepted original notes will be made by the exchange
agent promptly after acceptance of the tendered original notes. Original notes
not accepted for exchange will be returned without expense to the tendering
holders. Or, in the case of original notes tendered by book-entry transfer,
the non-exchanged original notes will be credited to an account maintained
with the book-entry transfer facility promptly following the expiration date.
If Level 3 terminates the exchange offer before the expiration date, these
non-exchanged original notes will be credited to the exchange agent's account
promptly after the exchange offer is terminated.


                                      28
<PAGE>

Conditions to the Exchange Offer

    Despite any other provision of the exchange offer or any extension of the
exchange offer, Level 3 will not be required to issue new notes for any
properly tendered original notes not previously accepted. Level 3 may terminate
the exchange offer by oral or written notice to the exchange agent and by
timely public announcement communicated, unless otherwise required by
applicable law or regulation, by making a release to the Dow Jones News Service
or, at its option, modify or otherwise amend the exchange offer, if:

  (1) any action or proceeding is threatened, instituted or pending before,
      or any injunction, order or decree is issued by, any court or
      governmental agency or other governmental regulatory or administrative
      agency or commission:

     (A) seeking to restrain or prohibit the making or completion of the
         exchange offer or any other transaction contemplated by the
         exchange offer,

     (B) assessing or seeking any damages as a result of the making or
         completion of the exchange offer or any other transaction
         contemplated by the exchange offer, or

     (C) resulting in a material delay in the ability of Level 3 to accept
         for exchange or exchange some or all of the original notes in the
         exchange offer;

  (2) any statute, rule, regulation, order or injunction is sought,
      proposed, introduced, enacted, promulgated or deemed applicable to the
      exchange offer or any of the transactions contemplated by the exchange
      offer by any government or governmental authority, domestic or
      foreign, or any action is taken, proposed or threatened, by any
      government, governmental authority, agency or court, domestic or
      foreign, that in the sole judgment of Level 3 might result in any of
      the consequences referred to in clauses (1)(A) or (B) above or, in the
      sole judgment of Level 3, might result in the holders of new notes
      having obligations relating to resales and transfers of new notes
      which are greater than those described in the interpretations of the
      SEC referred to in "--Terms of the Exchange" above, or would otherwise
      make it inadvisable to proceed with the exchange offer; or

  (3) a material adverse change has occurred in the business, condition
      (financial or otherwise), operations, or prospects of Level 3.

The conditions described above are for the sole benefit of Level 3. Level 3 may
assert these conditions regarding all or any portion of the exchange offer
regardless of the circumstances, including any action or inaction by Level 3,
giving rise to the condition. Level 3 may waive these conditions in whole or in
part at any time or from time to time in its sole discretion. The failure by
Level 3 at any time to exercise any of the rights described above will not be
deemed a waiver of any of those rights, and each right will be deemed an
ongoing right which may be asserted at any time or from time to time. In
addition, Level 3 has reserved the right, despite the satisfaction of each of
the conditions described above, to terminate or amend the exchange offer.

    Any determination by Level 3 concerning the fulfillment or non-fulfillment
of any conditions will be final and binding upon all parties.

    In addition, Level 3 will not accept for exchange any original notes
tendered and no new notes will be issued in exchange for any original notes, if
at that time any stop order is threatened or in effect relating to:

  (1) the registration statement of which this prospectus constitutes a
      part; or

  (2) the qualification of any of the indentures under the Trust Indenture
      Act.

                                       29
<PAGE>

Exchange Agent

    The Bank of New York has been appointed as the exchange agent for the
exchange offer. Letters of transmittal must be addressed to the exchange agent
at its address set forth below.

    By Registered or Certified Mail:      By Overnight Courier or By Hand:
    The Bank of New York                  The Bank of New York
    101 Barclay Street, 7E                101 Barclay Street
    New York, NY 10286                    Corporate Trust Services Window
    Attention: Ken Lou                    Ground Level
                                          New York, New York 10286
                                          Attention: Enrique Lopez

                                 By Facsimile:
                                 (212) 815-6339
                      Confirm by Telephone: (212) 815-3750

    Delivery to an address other than as set forth in this prospectus, or
transmissions of instructions via a facsimile or telex number other than the
ones set forth herein, will not constitute a valid delivery.

Solicitation of Tenders; Expenses

    Level 3 has not retained any dealer-manager or similar agent in connection
with the exchange offer and will not make any payments to brokers, dealers or
others for soliciting acceptances of the exchange offer. However, Level 3 will
pay the exchange agent reasonable and customary fees for its services and will
reimburse it for reasonable out-of-pocket expenses in connection with its
services. Level 3 will also pay brokerage houses and other custodians, nominees
and fiduciaries the reasonable out-of-pocket expenses incurred by them in
forwarding tenders for their customers. The expenses to be incurred in
connection with the exchange offer, including the fees and expenses of the
exchange agent and printing, accounting and legal fees, will be paid by Level 3
and are estimated at approximately $600,000.

Appraisal Rights

    Holders of original notes will not have dissenters' rights or appraisal
rights in connection with the exchange offer.

United States Federal Income Tax Consequences

    The exchange of original notes for new notes by U.S. holders will not be a
taxable exchange for U.S. federal income tax purposes, and U.S. holders will
not recognize any taxable gain or loss or any interest income as a result of
the exchange.

Other

    Participation in the exchange offer is voluntary, and holders should
carefully consider whether to accept the terms and conditions of this offer.
Holders of the original notes are urged to consult their financial and tax
advisors in making their own decisions on what action to take.

    As a result of the making of this exchange offer, and upon acceptance for
exchange of all validly tendered original notes according to the terms of this
exchange offer, Level 3 will have fulfilled a covenant contained in the terms
of the original notes and the registration agreement. Holders of the original
notes who do not tender their certificates in the exchange offer will continue
to hold those certificates and will be entitled to all the rights, and
limitations applicable to the original notes under the indentures, except for
any rights under the registration agreement which by their terms terminate or
cease to have further effect as a result of the making of this exchange offer.
See "Description of Notes."

                                       30
<PAGE>

    All untendered original notes will continue to be subject to the
restrictions on transfer set forth in the indentures. In general, the original
notes may not be reoffered, resold or otherwise transferred in the U.S. unless
registered under the Securities Act or unless an exemption from the Securities
Act registration requirements is available. Except under certain limited
circumstances, we do not intend to register the original notes under the
Securities Act.

    In addition, any holder of original notes who tenders in the exchange offer
for the purpose of participating in a distribution of the new notes may be
deemed to have received restricted securities. If so, that holder will be
required to comply with the registration and prospectus delivery requirements
of the Securities Act in connection with any resale transaction. To the extent
that original notes are tendered and accepted in the exchange offer, the
trading market, if any, for the original notes could be adversely affected.

    Level 3 may in the future seek to acquire untendered original notes in open
market or privately negotiated transactions, through subsequent exchange offers
or otherwise. Level 3 has no present plan to acquire any original notes that
are not tendered in the exchange offer.

                                       31
<PAGE>

                  Description of Other Indebtedness of Level 3

    The following is a description of Level 3's material outstanding
indebtedness. The following summaries of the senior secured credit facility and
Level 3's outstanding notes are qualified in their entirety by reference to the
credit agreement and the indentures to which each issue of notes relates.
Copies of these agreements are available on request to Level 3.

Senior Secured Credit Facility

    On September 30, 1999, Level 3 and certain Level 3 subsidiaries entered
into a $1.375 billion senior secured credit facility underwritten by a
syndicate of banks and other financial institutions led by Chase Securities,
Inc., as sole manager and lead arranger, Goldman Sachs Credit Partners L.P.,
J.P. Morgan Securities Inc. and Salomon Smith Barney Inc., as co-syndication
agents, and The Chase Manhattan Bank, as administrative agent. These
institutions are all affiliated with our lead underwriters for, or our initial
purchasers in, our offerings of common stock, 6% convertible notes, the
original notes and the original 2008 euro notes and 2010 euro notes, which were
completed on February 29, 2000. The senior secured credit facility, which was
amended on November 24, 1999, consists of a $450 million tranche A term loan
facility, a $275 million tranche B term loan facility and a $650 million
revolving credit facility. As of March 31, 2000, we had $475 million
outstanding under the senior secured credit facility.

    All obligations under the revolving credit facility are secured by
substantially all the assets of Level 3 and, subject to certain exceptions, its
wholly owned domestic subsidiaries (other than the borrower under the term loan
facilities). These assets also secure a portion of the term loan facilities in
an amount equal to $100 million plus, with certain exceptions, the undrawn
amount of the revolving credit facility. Additionally, all obligations under
the term loan facilities are secured by the equipment that is purchased, in
whole or in part, with the proceeds of the term loan facilities and the lease
rentals derived from the lease of such equipment to the Company's operating
subsidiaries. Level 3 and, subject to certain exceptions, all its domestic
subsidiaries (other than the borrower under the term loan facilities) have
guaranteed all obligations under the revolving credit facility. Level 3 and,
subject to certain exceptions, all its domestic subsidiaries have guaranteed
all obligations under the term loan facilities.

    The revolving credit facility and the tranche A term loan facility mature
on September 30, 2007, and the tranche B term loan facility matures on January
15, 2008.

    Amounts drawn under the revolving credit facility and the term loans bear
interest, at the option of the Company, at an alternate base rate or the London
Interbank Offered Rate (LIBOR) plus, in each case, applicable margins based
upon, in the case of the revolving credit facility and the tranche A term loan
facility, the ratings established by Moody's and S&P for the highest rated
senior unsecured long-term debt of Level 3. The applicable margins for the
revolving credit facility and the tranche A term loan facility range from 50 to
175 basis points over the alternate base rate and from 150 to 275 basis points
over LIBOR and are fixed for the tranche B term loan facility at 250 basis
points over the alternate base rate and 350 basis points over LIBOR.

    Beginning on March 31, 2004, the revolving credit facility provides for
automatic and permanent quarterly reductions of the amount available for
borrowing under that facility, commencing at $17.25 million per quarter and
increasing to approximately $61 million per quarter. The tranche A term loan
facility amortizes in consecutive quarterly payments beginning on March 31,
2004, commencing at $9 million per quarter and increasing to $58.5 million per
quarter. The tranche B term loan facility amortizes with substantially all of
the scheduled payments due in equal amounts from March 31, 2007 to January 15,
2008.

    The credit agreement requires that indebtedness outstanding under the term
loan facilities be paid with all of the net proceeds with respect to certain
asset sales and, beginning December 31, 2003, with 50% of excess cash flow for
each fiscal year.

                                       32
<PAGE>

    The credit agreement contains customary negative covenants restricting and
limiting the ability of Level 3, the borrowers and any other restricted
subsidiary to engage in certain activities, including but not limited to:

  (1)  limitations on indebtedness and the incurrence of liens;

  (2)  restrictions on sale leaseback transactions, consolidations, mergers,
       sale of assets, transactions with affiliates and investments; and

  (3)  restrictions on issuance of preferred stock, dividends and
       distributions on capital stock, and other similar distributions,
       including distributions to Level 3 by its subsidiaries.

    The credit agreement also requires Level 3 and the borrowers to comply with
specific financial and operational tests and maintain financial ratios,
including a:

  (1)  minimum intercity route miles completed test;

  (2)  minimum markets with fiber networks test;

  (3)  minimum telecom revenue test;

  (4)  maximum total debt to contributed capital ratio;

  (5)  maximum total debt to total telecommunications revenue ratio;

  (6)  maximum senior secured debt to gross property, plant and equipment
       ratio; and

  (7)  beginning December 31, 2004, maximum total debt to EBITDA.

    The credit agreement generally does not permit Level 3 or its subsidiaries
to make payments on any outstanding indebtedness, which includes the original
notes and the new notes, other than regularly scheduled interest and principal
payments as and when due.

    The senior secured credit facility contains customary events of default,
including an event of default upon certain changes of control of Level 3 and
certain defaults under other indebtedness having an outstanding principal
amount exceeding $25 million.

9 1/8% Senior Notes due 2008

    On April 28, 1998, Level 3 issued $2 billion aggregate principal amount of
9 1/8% senior notes due 2008 under an indenture between Level 3 and The Bank of
New York, as successor trustee to IBJ Whitehall Bank & Trust Company. The 9
1/8% senior notes are senior unsecured obligations of Level 3. They rank
equally in right of payment with Level 3's 10 1/2% senior discount notes, euro-
denominated 10 3/4% senior notes due 2008 and 11 1/4% senior notes due 2010 and
all other existing and future senior unsecured indebtedness of Level 3,
including the notes being exchanged in this offering. The notes bear interest
at a rate of 9 1/8% per annum, payable semiannually in arrears on May 1 and
November 1.

    Level 3 may redeem the 9 1/8% senior notes, in whole or in part, at any
time on or after May 1, 2003. If a redemption occurs before May 1, 2006, Level
3 will pay a premium on the principal amount of the 9 1/8% senior notes
redeemed. This premium decreases annually from approximately 4.5% for a
redemption during the twelve month period beginning on May 1, 2003 to
approximately 1.5% for a redemption during the twelve month period beginning on
May 1, 2005.

    In addition, at any time prior to May 1, 2001, Level 3 may redeem up to 35%
of the original aggregate principal amount of the 9 1/8% senior notes with the
net proceeds of specified public or private offerings of its common stock at a
redemption price equal to 109.125% of the principal amount of the notes
redeemed, plus accrued and unpaid interest, if any. At least 65% of the
aggregate principal amount of 9 1/8% senior notes must remain outstanding after
such a redemption.

    If an event treated as a change in control of Level 3 occurs, Level 3 will
be obligated, subject to certain conditions, to offer to purchase all of the
outstanding notes at a purchase price of 101% of the principal amount, plus
accrued and unpaid interest, if any.

                                       33
<PAGE>

    The indenture relating to the 9 1/8% senior notes places restrictions on
the ability of Level 3 and its restricted subsidiaries to:

  (1)  incur additional indebtedness;

  (2)  pay dividends or make other restricted payments and transfers;

  (3)  create liens;

  (4)  sell assets;

  (5)  issue or sell capital stock of some of its subsidiaries;

  (6)  enter into transactions, including transactions with affiliates; and

  (7)  in the case of Level 3, consolidate, merge or sell substantially all
       of Level 3's assets.

    The holders of the 9 1/8% senior notes may force Level 3 to immediately
repay the principal on the 9 1/8% senior notes, including interest to the
acceleration date, if certain defaults exist under other indebtedness having an
outstanding principal amount of at least $25 million.

10 1/2% Senior Discount Notes due 2008

    On December 2, 1998, Level 3 issued $833.815 million aggregate principal
amount at maturity of 10 1/2% senior discount notes due 2008 under an indenture
between Level 3 and The Bank of New York, as successor trustee to IBJ Whitehall
Bank & Trust Company. The 10 1/2% senior discount notes are senior unsecured
obligations of Level 3. They rank equally in right of payment with the 9 1/8%
senior notes, our euro-denominated 10 3/4% senior notes due 2008 and 11 1/4%
senior notes due 2010 and all other existing and future senior unsecured
indebtedness of Level 3, including the notes being exchanged in this offering.

    The issue price of the 10 1/2% senior discount notes was approximately 60%
of the principal amount at maturity. The notes accrete at a rate of 10 1/2% per
year, compounded semiannually, to 100% of their principal amount by December 1,
2003. Cash interest will not begin to accrue on the 10 1/2% senior discount
notes until December 1, 2003, unless Level 3 elects to commence the accrual on
or after December 1, 2001. Beginning on December 1, 2003, cash interest will
accrue at a rate of 10 1/2% and will be payable semiannually on June 1 and
December 1, beginning June 1, 2004.

    Level 3 may redeem the 10 1/2% senior discount notes, in whole or in part,
at any time on or after December 1, 2003. If a redemption occurs before
December 1, 2006, Level 3 will pay a premium on the accreted value of the 10
1/2% senior discount notes redeemed. This premium decreases annually from
approximately 5.25% for a redemption during the twelve month period beginning
on December 1, 2003 to approximately 1.75% for a redemption during the twelve
month period beginning on December 1, 2005.

    In addition, at any time prior to December 1, 2001, Level 3 may redeem up
to 35% of the original aggregate principal amount at maturity of the 10 1/2%
senior discount notes with the net proceeds of specified public or private
offerings of its common stock at a redemption price equal to 110.5% of the
accreted value of the notes redeemed, plus accrued and unpaid interest, if any.
At least 65% of the aggregate principal amount at maturity of the 10 1/2%
senior discount notes must remain outstanding after such a redemption.

    If an event treated as a change in control of Level 3 occurs, Level 3 will
be obligated, subject to certain conditions, to offer to purchase all of the
outstanding notes at a purchase price of 101% of the accreted value, plus
accrued and unpaid interest, if any.

    The indenture relating to the 10 1/2% senior discount notes places certain
restrictions on the actions of Level 3 and its restricted subsidiaries that are
substantially similar to those contained in the indenture relating to the 9
1/8% senior notes. The indenture also contains a provision relating to the
acceleration of the 10 1/2% senior discount notes that is substantially similar
to that contained in the indenture relating to the 9 1/8% senior notes.

                                       34
<PAGE>

6% Convertible Subordinated Notes

    On September 20, 1999, Level 3 issued $823 million aggregate principal
amount of 6% convertible subordinated notes due 2009 under an indenture between
Level 3 and The Bank of New York, as successor trustee to IBJ Whitehall Bank &
Trust Company. The 6% convertible notes are unsecured, subordinated obligations
of Level 3.

    The 6% convertible notes are convertible into shares of common stock, at
the option of the holder, at any time prior to maturity, unless previously
repurchased or unless Level 3 has caused the conversion rights to expire. The
6% convertible notes may be converted at the initial rate of 15.3401 shares of
common stock per each $1,000 principal amount of notes, subject to adjustment
in certain circumstances. This is equivalent to a conversion price of
approximately $65.19 per share.

    On or after September 15, 2002, Level 3 may cause the conversion rights of
the holders of 6% convertible notes to expire at any time prior to the maturity
date of the notes. Level 3 may exercise this option only if for at least 20
trading days within any period of 30 consecutive trading days, including the
last trading day of that period, the current market price of common stock
exceeds 140% of the prevailing conversion price then in effect.

    If an event treated as a change in control of Level 3 occurs, Level 3 will
be obligated, subject to certain conditions, to offer to purchase all of the
outstanding notes at a purchase price of 100% of the principal amount, plus
accrued and unpaid interest, if any. Level 3 will pay the repurchase price in
cash or, at Level 3's option but subject to the satisfaction of certain
conditions, in shares of common stock.

    In the event of a bankruptcy, liquidation or reorganization of Level 3, an
acceleration of the 6% convertible notes due to an event of default under the
indenture, and certain other events, the payment of the principal of, premium,
if any, and interest on the 6% convertible notes will be subordinated in right
of payment to the prior full and final payment in cash of all senior debt of
Level 3.

    The indenture also contains a provision relating to the acceleration of the
6% convertible notes that is substantially similar to that contained in the
indenture relating to the 9 1/8% senior notes.

Euro-Denominated Senior Notes

 2008 Euro Notes

    On February 29, 2000, Level 3 issued (Euro)500 million aggregate principal
amount of 10 3/4% senior notes due 2008 under an indenture between Level 3 and
The Bank of New York, as trustee. The 2008 euro notes are senior unsecured
obligations of Level 3. They rank equally in right of payment with Level 3's
other senior notes and senior discount notes and all other existing and future
senior unsecured indebtedness of Level 3. The notes bear interest at a rate of
10 3/4% per annum, payable semiannually in arrears on March 15 and September
15. Concurrently with this exchange offer, Level 3 is offering to exchange all
of its outstanding 2008 euro notes for 2008 euro notes that are registered
under the Securities Act.

    The 2008 euro notes are not redeemable at the option of the Company prior
to maturity.

    If an event treated as a change in control of Level 3 occurs, Level 3 will
be obligated, subject to certain conditions, to offer to purchase all of the
outstanding notes at a purchase price of 101% of the principal amount, plus
accrued and unpaid interest, if any.

    The indenture relating to the 2008 euro notes places certain restrictions
on the actions of Level 3 and its restricted subsidiaries that are
substantially similar to those contained in the indenture relating to the 9
1/8% senior notes. The indenture also contains a provision relating to the
acceleration of the 2008 euro notes that is substantially similar to that
contained in the indenture relating to the 9 1/8% senior notes.

                                       35
<PAGE>

 2010 Euro Notes

    On February 29, 2000, Level 3 issued (Euro)300 million aggregate principal
amount of 11 1/4% senior notes due 2010 under an indenture between Level 3 and
The Bank of New York, as trustee. The 2010 euro notes will be senior unsecured
obligations of Level 3. They rank equally in right of payment with Level 3's
other senior notes and senior discount notes and all other existing and future
senior unsecured indebtedness of Level 3. The notes bear interest at a rate of
11 1/4% per annum, payable semiannually in arrears on March 15 and
September 15. Concurrently with this exchange offer, Level 3 is offering to
exchange all of its outstanding 2010 euro notes for 2010 euro notes that are
registered under the Securities Act.

    Level 3 may redeem the 2010 euro notes, in whole or in part, at any time on
or after March 15, 2005. If a redemption occurs before March 15, 2008, Level 3
will pay a premium on the principal amount of the 2010 euro notes redeemed.
This premium decreases annually from approximately 5.625% for a redemption
during the twelve month period beginning on March 15, 2005 to approximately
1.875% for a redemption during the twelve month period beginning on March 15,
2007.

    In addition, at any time prior to March 15, 2003, Level 3 may redeem up to
35% of the original aggregate principal amount of the 2010 euro notes with the
net proceeds of specified public or private offerings of its common stock at a
redemption price equal to 111.25% of the principal amount of the notes
redeemed, plus accrued and unpaid interest, if any. At least 65% of the
aggregate principal amount of the 2010 euro notes must remain outstanding after
such a redemption.

    If an event treated as a change in control of Level 3 occurs, Level 3 will
be obligated, subject to certain conditions, to offer to purchase all of the
outstanding notes at a purchase price of 101% of the principal amount, plus
accrued and unpaid interest, if any.

    The indenture relating to the 2010 euro notes places certain restrictions
on the actions of Level 3 and its restricted subsidiaries that are
substantially similar to those contained in the indenture relating to the 9
1/8% senior notes. The indenture also contains a provision relating to the
acceleration of the 2010 euro notes that is substantially similar to that
contained in the indenture relating to the 9 1/8% senior notes.

2010 Convertible Subordinated Notes

    On February 29, 2000 Level 3 issued $862.5 million aggregate principal
amount of 6% convertible subordinated notes due 2010 under an indenture between
Level 3 and The Bank of New York, as trustee. The 2010 convertible notes are
unsecured, subordinated obligations of Level 3.

    The 2010 convertible notes are convertible into shares of common stock, at
the option of the holder, at any time prior to maturity, unless previously
repurchased or redeemed, or unless Level 3 has caused the conversion rights to
expire. The 2010 convertible notes may be converted at the initial rate of
7.416 shares of common stock per each $1,000 principal amount of notes, subject
to adjustment in certain circumstances. This is equivalent to a conversion
price of approximately $134.84 per share.

    Prior to March 18, 2003, Level 3 may redeem the 2010 convertible notes, in
whole or in part, at the redemption prices set forth in the indenture relating
to the 2010 convertible notes plus any accrued interest to the date of
repurchase, if the current market price of Level 3's common stock equals or
exceeds certain triggering levels. Level 3 will make a make-whole payment with
respect to notes converted into common stock between the date the notes are
called for redemption and the redemption date. On or after March 18, 2003,
Level 3 may cause the rights of the holders of the 2010 convertible notes to
expire at any time prior to the maturity date of the notes. Level 3 may
exercise this option to cause the conversion rights to expire only if for at
least 20 trading days within any period of 30 consecutive trading days,
including the last trading day of that period, the current market price of
common stock exceeds 140% of the prevailing conversion price then in effect.

                                       36
<PAGE>

    If an event treated as a change in control of Level 3 occurs, Level 3 will
be obligated, subject to certain conditions, to offer to purchase all of the
outstanding notes at a purchase price of 100% of the principal amount, plus
accrued and unpaid interest, if any. Level 3 will pay the repurchase price in
cash or, at Level 3's option but subject to the satisfaction of certain
conditions, in shares of common stock.

    In the event of a bankruptcy, liquidation or reorganization of Level 3, an
acceleration of the 2010 convertible notes due to an event of default under the
indenture relating to the 2010 convertible notes, and certain other events, the
payment of the principal of, premium, if any, and interest on the 2010
convertible notes will be subordinated in right of payment to the prior full
and final payment in cash of all senior debt of Level 3.

    The indenture relating to the 2010 convertible notes also contains a
provision relating to the acceleration of the 2010 convertible notes that is
substantially similar to that contained in the indenture relating to the 9 1/8%
senior notes.

                                       37
<PAGE>

                              Description of Notes

General

    For purposes of this "Description of Notes," the words "Level 3," "we,"
"us" and "our" refer only to Level 3 Communications, Inc. and do not include
its subsidiaries except for purposes of financial data determined on a
consolidated basis.

    The new 2008 senior notes, 2010 senior notes and 2010 senior discount
notes, like the original 2008 senior notes, 2010 senior notes and 2010 senior
discount notes, will be issued under three separate indentures, dated as of
February 29, 2000, between Level 3 and The Bank of New York, as trustee. The
2008 senior notes, the 2010 senior notes and the 2010 senior discount notes are
each a separate series of debt securities, and as such will vote separately on
matters under the indentures. Since many provisions of the indentures are
identical, they are described together below, but the provisions of each
indenture apply only to the notes outstanding thereunder. The original notes
and the new notes issued under each indenture will be considered collectively
to be a single class for all purposes under that indenture, including waivers,
amendments, redemptions and Offers to Purchase. For purposes of this
"Description of Notes," all references in this prospectus to the notes shall be
deemed to refer collectively to the original notes and the new notes.

    The indentures are governed by the Trust Indenture Act of 1939. The terms
of the notes include those stated in the indentures and those made part of the
indentures by reference to the Trust Indenture Act. We urge you to read the
indentures because they, and not this description, define your rights as a
holder of the notes. The indentures have been filed as an exhibit to the
registration statement of which this prospectus is a part.

    Because this section is a summary, it does not describe every aspect of the
notes. This summary is subject to and qualified in its entirety by reference to
the Trust Indenture Act and to all the provisions of the indentures, including
definitions of some terms used in the indentures. For example, in this summary,
we use capitalized words to signify defined terms that have been given special
meaning in the indenture. We describe the meaning for only the more important
terms under " -- Definitions. " Whenever we refer to particular defined terms
of the indenture in this prospectus, these defined terms are incorporated by
reference in this prospectus.

    We will issue notes only in fully registered form without coupons, in
denominations of $1,000 and integral multiples of $1,000.

Principal, Maturity and Interest

    The 2008 senior notes will mature on March 15, 2008. The 2010 senior notes
will mature on March 15, 2010. The 2010 senior discount notes will mature on
March 15, 2010. The notes are limited to $800,000,000 aggregate principal
amount of 2008 senior notes, $250,000,000 aggregate principal amount of 2010
senior notes and $675,000,000 aggregate principal amount at maturity of 2010
senior discount notes.

    Interest on the 2008 Senior Notes will accrue at a rate of 11% per annum
and will be payable semi-annually in arrears on March 15 and September 15,
commencing on September 15, 2000. Interest on the 2010 senior notes will accrue
at a rate of 11 1/4% per annum and will be payable semi-annually in arrears on
March 15 and September 15, commencing on September 15, 2000. We will pay
interest to those persons who were holders of record on the March 1 or
September 1 immediately preceding each interest payment date. Interest on the
2008 senior notes and the 2010 senior notes will accrue from the date of
original issuance or, if interest has already been paid, from the date it was
most recently paid. Interest will be computed on the basis of a 360-day year
comprised of twelve 30-day months.

                                       38
<PAGE>

    The original 2010 senior discount notes were issued at a discount to their
aggregate principal amount to generate gross proceeds to us of approximately
$359,829,000. The principal on the 2010 senior discount notes will accrete in
value at a rate of approximately 12 7/8% per annum, compounded semi-annually,
to an aggregate principal amount of $675,000,000 by March 15, 2005. Except as
described under "The Exchange Offer--Special Interest," cash interest will not
accrue on the 2010 senior discount notes prior to March 15, 2005. However,
Level 3 may elect, upon not less than 60 days prior notice, to commence the
accrual of cash interest on all outstanding 2010 senior discount notes on or
after March 15, 2003. In that case, the outstanding principal amount at
maturity of each 2010 senior discount note will on the commencement date be
reduced to the Accreted Value of that 2010 senior discount note as of that date
and cash interest shall be payable on that 2010 senior discount note on each
March 15 and September 15 after that date.

    Except as otherwise described in the paragraph above, interest on the 2010
senior discount notes will accrue at the rate of 12 7/8% per annum and will be
payable in cash semi-annually on March 15 and September 15 of each year,
beginning on September 15, 2005, to those persons who were holders of record on
the preceding March 1 or September 1 immediately preceding each interest
payment date. Interest on the 2010 senior discount notes will accrue from the
most recent date on which interest has been paid or, if no interest has been
paid, from March 15, 2005. Interest will be computed on the basis of a 360-day
year comprised of twelve 30-day months.

    We will be obligated to pay special interest on the original notes in the
circumstances described under "The Exchange Offer--Special Interest." If the
exchange offer is completed on the terms and within the period contemplated by
this prospectus, no special interest will be payable. The new notes will not
contain any provisions regarding the payment of special interest.

Ranking

    The notes will be:

  .  senior unsecured obligations of Level 3;

  .  equal in ranking, or pari passu, with all our existing and future senior
     debt; and

  .  senior in right of payment to all our future subordinated debt.

    We only have a stockholder's claim on the assets of our subsidiaries,
including Level 3 Communications LLC, our principal communications company.
This stockholder's claim is junior to the claims that creditors of our
subsidiaries have against those subsidiaries. Holders of the notes will only be
creditors of Level 3, and not of our subsidiaries. Our subsidiaries will have
no direct obligation to pay the notes or to guarantee the notes. As a result,
all the existing and future liabilities of our subsidiaries, including any
claims of trade creditors and preferred stockholders, will be effectively
senior to the notes.

    As of March 31, 2000, our subsidiaries had:

  .  approximately $2.146 in aggregate indebtedness and other balance sheet
     liabilities, excluding intercompany liabilities, and $900 million in
     additional borrowings available under the Credit Agreement.

    Our subsidiaries have other liabilities, including contingent liabilities,
that may be significant. Although the indentures contain limitations on the
amount of additional Debt that we and the Restricted Subsidiaries may Incur,
the amounts of this Debt could be substantial. In addition, this Debt may be
Debt of our subsidiaries, in which case this Debt would be effectively senior
in right of payment to the Notes. See "--Certain Covenants--Limitation on
Consolidated Debt."

                                       39
<PAGE>

    The notes are obligations exclusively of Level 3. Substantially all of our
operations are conducted through subsidiaries. Therefore, our ability to
service our debt, including the notes, is dependent upon the earnings of our
subsidiaries and their ability to distribute those earnings as dividends, loans
or other payments to us. The payment of dividends and the making of loans and
advances to us by our subsidiaries are subject to various restrictions. Future
debt of certain of the subsidiaries may prohibit the payment of dividends or
the making of loans or advances to us. In addition, the ability of our
subsidiaries to make payments, loans or advances to us is limited by the laws
of the relevant jurisdictions in which our subsidiaries are organized or
located. In certain circumstances, the prior or subsequent approval of
payments, loans or advances by subsidiaries to us is required from applicable
regulatory bodies or other governmental entities.

    The notes are unsecured obligations of Level 3. Secured Debt of Level 3
will be effectively senior to the notes to the extent of the value of the
assets securing this Debt.

    As of March 31, 2000, the outstanding secured Debt of Level 3 was as
follows:

      . $475 million of indebtedness outstanding under the Credit Agreement.

    See "Risk Factors--Our subsidiaries must make payments to us in order for
us to make payments on the notes," "--We have substantial existing debt and
will incur substantial additional debt, so we may be unable to make payments on
the notes" and "Description of Other Indebtedness of Level 3."

    In addition, our Credit Agreement generally does not permit us or our
subsidiaries to make payments on any outstanding indebtedness other than
regularly scheduled interest and principal payments as and when due. As a
result, our Credit Agreement would prohibit us from making any payments on the
notes in the event that the notes are accelerated or tendered for purchase upon
a Change of Control. Any such failure to make payments on the notes would cause
us to default under the indentures, which in turn is likely to be a default
under the Credit Agreement and other outstanding and future indebtedness. See
"Risk Factors--Our senior secured credit facility may prohibit us from making
payment on the notes."

Optional Redemption

    The 2008 senior notes are not redeemable at the option of Level 3 prior to
maturity.

    Except as set forth below, the 2010 senior notes and the 2010 senior
discount notes will not be redeemable at our option prior to March 15, 2005.
Starting on that date, we may redeem all or any portion of the 2010 senior
notes or the 2010 senior discount notes, at once or over time, after giving the
required notice under the applicable indenture.

    The 2010 senior notes and the 2010 senior discount notes may be redeemed at
the redemption prices set forth below, plus accrued and unpaid interest, if
any, to the redemption date. However, the holders of record on the relevant
record date have the right to receive interest due on the relevant interest
payment date. The following prices are for 2010 senior notes and 2010 senior
discount notes redeemed during the 12-month period commencing on March 15 of
the years set forth below, and are expressed as percentages of principal amount
or Accreted Value, as applicable.

                                       40
<PAGE>

                               2010 Senior Notes

<TABLE>
<CAPTION>
                                                                      Redemption
Year                                                                    Price
----                                                                  ----------
<S>                                                                   <C>
2005.................................................................  105.625%
2006.................................................................  103.750%
2007.................................................................  101.875%
2008 and thereafter..................................................  100.000%
</TABLE>

                           2010 Senior Discount Notes

<TABLE>
<CAPTION>
                                                                      Redemption
Year                                                                    Price
----                                                                  ----------
<S>                                                                   <C>
2005.................................................................  106.438%
2006.................................................................  104.292%
2007.................................................................  102.146%
2008 and thereafter..................................................  100.000%
</TABLE>

    Any notice to holders of 2010 senior notes or 2010 senior discount notes of
such a redemption must include the appropriate calculation of the redemption
price, but need not include the redemption price itself. The actual redemption
price, calculated as described above, must be set forth in an Officers'
Certificate delivered to the trustee no later than two business days prior to
the redemption date.

    In addition, at any time and from time to time, prior to March 15, 2003, we
may redeem up to a maximum of 35% of, in the case of the 2010 senior notes, the
original aggregate principal amount or, in the case of the 2010 senior discount
notes, the aggregate principal amount at maturity, at a redemption price equal
to, in the case of the 2010 senior notes, 111.250% of the principal amount
thereof, and in the case of the 2010 senior discount notes, 112.875% of the
Accreted Value thereof, in each case plus accrued and unpaid interest thereon,
if any, to the redemption date with the proceeds of one or more private
placements to Persons other than Affiliates of Level 3 or underwritten public
offerings of Common Stock of Level 3 resulting in gross proceeds of at least
$100 million in the aggregate. However, holders of record on the relevant
record date have the right to receive interest due on the relevant interest
payment date. In addition, after giving effect to any such redemption of the
2010 senior notes, at least 65% of the original aggregate principal amount of
the 2010 senior notes must remain outstanding, and after giving effect to any
such redemption of the 2010 senior discount notes, at least 65% of the
aggregate principal amount at maturity of the 2010 senior discount notes must
remain outstanding. Any such redemption must be made within 90 days of the
applicable private placement or public offering upon not less than 30 nor more
than 60 days' prior notice.

Mandatory Redemption

    Except as described under "--Certain Covenants--Change of Control
Triggering Event" and "--Limitation on Asset Dispositions," Level 3 is not
required to make mandatory redemption payments or sinking fund payments
relating to the notes.

Certain Covenants

    Each indenture contains covenants that limit the ability of Level 3 and its
restricted subsidiaries to, among other things:

  (1)  incur debt;

  (2)  make various payments;

                                       41
<PAGE>

  (3)  pay dividends and make other restricted payments and transfers;

  (4)  create liens;

  (5)  enter into certain transactions, including transactions with
       affiliates;

  (6)  sell assets;

  (7)  issue or sell capital stock of certain of its subsidiaries; and

  (8)  in the case of Level 3, consolidate, merge or sell substantially all
       of Level 3's assets.

In addition, if a Change of Control occurs, Level 3 must within 30 days make an
offer to repurchase all outstanding notes at a price equal to 101% of the
principal amount or Accreted Value, as applicable, of the notes, plus accrued
and unpaid interest, if any, to the purchase date. The above limitations are
restrictive covenants. Restrictive covenants are promises that we make to you
about how we will run our business or about business actions that we promise
not to take. All of the covenants are subject to a number of important
qualifications and exceptions. A more detailed description of the restrictive
covenants follows below.

    Limitation on Consolidated Debt. (a) Level 3 may not, and may not permit
any Restricted Subsidiary to, directly or indirectly, Incur any Debt, unless,
after giving pro forma effect to such Incurrence and the receipt and
application of the net proceeds thereof, no Default or Event of Default would
occur as a consequence of such Incurrence or be continuing following such
Incurrence and either:

  (1) the ratio of

     (A) the aggregate consolidated principal amount (or, in the case of
         Debt issued at a discount, the Accreted Value) of Debt of Level 3
         and its Restricted Subsidiaries outstanding as of the most recent
         available quarterly or annual balance sheet, after giving pro
         forma effect to the Incurrence of such Debt and any other Debt
         Incurred or repaid since such balance sheet date and the receipt
         and application of the net proceeds thereof, to

     (B) Consolidated Cash Flow Available for Fixed Charges for the four
         full fiscal quarters next preceding the Incurrence of such Debt
         for which consolidated financial statements are available, would
         be less than 5.0 to 1.0; or

  (2) Level 3's Consolidated Capital Ratio as of the most recent available
      quarterly or annual balance sheet, after giving pro forma effect to:

     (X) the Incurrence of such Debt and any other Debt Incurred or repaid
         since such balance sheet date,

     (Y) the issuance of any Capital Stock (other than Disqualified Stock)
         of Level 3 since such balance sheet date, including the issuance
         of any Capital Stock to be issued concurrently with the Incurrence
         of such Debt, and

     (Z) the receipt and application of the net proceeds of such Debt or
         Capital Stock, as the case may be, is less than 2.25 to 1.0.

  (b) Notwithstanding the foregoing limitation, Level 3 or any Restricted
Subsidiary may Incur any and all of the following (each of which shall be given
independent effect):

  (1) Debt under the notes, such indenture or any Restricted Subsidiary
      Guarantee;

                                       42
<PAGE>

  (2) Debt under Credit Facilities in an aggregate principal amount
      outstanding or available (together with all refinancing Debt
      outstanding or available pursuant to clause (8) below in respect of
      Debt previously Incurred pursuant to this clause (2)) at any one time
      not to exceed the greater of:

     (X) $750 million, which amount shall be permanently reduced by the
         amount of Net Available Proceeds used to repay Debt under the
         Credit Facilities, and not reinvested in Telecommunications/IS
         Assets or used to purchase notes or repay other Debt, pursuant to
         and as permitted by the covenant described under "--Limitation on
         Asset Dispositions," and

     (Y) 85% of the Eligible Receivables;

  (3) Purchase Money Debt, provided that the amount of such Purchase Money
      Debt does not exceed 100% of the cost of the construction,
      installation, acquisition, lease, development or improvement of the
      applicable Telecommunications/IS Assets;

  (4) Subordinated Debt of Level 3; provided, however, that the aggregate
      principal amount or, in the case of Debt issued at a discount, the
      Accreted Value, of such Debt, together with any other outstanding Debt
      Incurred pursuant to this clause (4), shall not exceed $500 million at
      any one time (which amount shall be permanently reduced by the amount
      of Net Available Proceeds used to repay Subordinated Debt of Level 3,
      and not reinvested in Telecommunications/IS Assets or used to purchase
      notes or repay other Debt, pursuant to and as permitted by the
      covenant described under "--Limitation on Asset Dispositions"), except
      to the extent such Debt in excess of $500 million:

     (A) is subordinated to all other Debt of Level 3 other than Debt
         Incurred pursuant to this clause (4) in excess of such $500
         million limitation,

     (B) does not provide for the payment of cash interest on such Debt
         prior to the Stated Maturity of the notes, and

     (C)(1)  does not provide for payments of principal of such Debt at
             stated maturity or by way of a sinking fund applicable thereto
             or by way of any mandatory redemption, defeasance, retirement
             or repurchase thereof by Level 3, including any redemption,
             retirement or repurchase which is contingent upon events or
             circumstances, but excluding any retirement required by virtue
             of the acceleration of any payment with respect to such Debt
             upon any event of default thereunder, in each case on or prior
             to the Stated Maturity of the notes, and

        (2)  does not permit redemption or other retirement (including pursuant
             to an offer to purchase made by Level 3 but excluding through
             conversion into Capital Stock of Level 3, other than Disqualified
             Stock, without any payment by Level 3 or its Restricted
             Subsidiaries to the holders thereof other than in respect of
             fractional shares) of such Debt at the option of the holder thereof
             on or prior to the Stated Maturity of the notes;

  (5)  Debt outstanding on the Measurement Date;

  (6)  Debt owed by Level 3 to any Restricted Subsidiary of Level 3 or Debt
       owed by a Restricted Subsidiary of Level 3 to Level 3 or a Restricted
       Subsidiary of Level 3; provided, however, that:

     (X)  upon the transfer, conveyance or other disposition by such
          Restricted Subsidiary or Level 3 of any Debt so permitted to a
          Person other than Level 3 or another Restricted Subsidiary of
          Level 3, or

     (Y)  if for any reason such Restricted Subsidiary ceases to be a
          Restricted Subsidiary, the provisions of this clause (6) shall no
          longer be applicable to such Debt and such Debt shall be deemed
          to have been Incurred by the issuer thereof at the time of such
          transfer, conveyance or other disposition or when such Restricted
          Subsidiary ceases to be a Restricted Subsidiary;

  (7)  Debt Incurred by a Person prior to the time:

     (A)  such Person became a Restricted Subsidiary,

                                       43
<PAGE>

     (B) such Person merges into or consolidates with a Restricted
         Subsidiary, or

     (C) another Restricted Subsidiary merges into or consolidates with
         such Person (in a transaction in which such Person becomes a
         Restricted Subsidiary), which Debt was not Incurred in
         anticipation of such transaction and was outstanding prior to such
         transaction;

  (8) Debt Incurred to renew, extend, refinance, defease, repay, prepay,
      repurchase, redeem, retire, exchange or refund (each, a refinancing)
      Debt Incurred pursuant to clause (1), (2), (3), (5), (7) or (12) of
      this paragraph (b) or this clause (8), in an aggregate principal
      amount (or if issued at a discount, the then-Accreted Value) not to
      exceed the aggregate principal amount (or if issued at a discount, the
      then-Accreted Value) of and accrued interest on the Debt so refinanced
      plus the amount of any premium required to be paid in connection with
      such refinancing pursuant to the terms of the Debt so refinanced or
      the amount of any premium reasonably determined by the board of
      directors of Level 3 as necessary to accomplish such refinancing by
      means of a tender offer or privately negotiated repurchase, plus the
      expenses of Level 3 Incurred in connection with such refinancing;
      provided, however, that:

     (A) the refinancing Debt shall not be senior in right of payment to
         the Debt that is being refinanced, and

     (B) in the case of any refinancing of Debt Incurred pursuant to clause
         (1), (5), (7) or (12) or, if such Debt previously refinanced Debt
         Incurred pursuant to any such clause, this clause (8), the
         refinancing Debt by its terms, or by the terms of any agreement or
         instrument pursuant to which such Debt is issued,

            (X) does not provide for payments of principal of such Debt at
                stated maturity or by way of a sinking fund applicable thereto
                or by way of any mandatory redemption, defeasance, retirement
                or repurchase thereof by Level 3 (including any redemption,
                retirement or repurchase which is contingent upon events or
                circumstances, but excluding any retirement required by virtue
                of the acceleration of any payment with respect to such Debt
                upon any event of default thereunder), in each case prior to
                the time the same are required by the terms of the Debt being
                refinanced, and

            (Y) does not permit redemption or other retirement (including
                pursuant to an offer to purchase made by Level 3) of such Debt
                at the option of the holder thereof prior to the time the same
                are required by the terms of the Debt being refinanced,

         other than, in the case of clause (X) or (Y), any such payment,
         redemption or other retirement (including pursuant to an offer to
         purchase made by Level 3) which is conditioned upon a change of control
         pursuant to provisions substantially similar to those described under"
         Change of Control Triggering Event;"

  (9) Debt:

     (A) in respect of performance, surety or appeal bonds, Guarantees,
         letters of credit or reimbursement obligations Incurred or
         provided in the ordinary course of business securing the
         performance of contractual, franchise, lease, self-insurance or
         license obligations and not in connection with the Incurrence of
         Debt, or

     (B) in respect of customary agreements providing for indemnification,
         adjustment of purchase price after closing, or similar
         obligations, or from Guarantees or letters of credit, surety bonds
         or performance bonds securing any such obligations of Level 3 or
         any of its Restricted Subsidiaries pursuant to such agreements,
         Incurred in connection with the disposition of any business,
         assets or Restricted Subsidiary of Level 3 (other than Guarantees
         of Indebtedness Incurred by any Person acquiring all or any
         portion of such business, assets or Restricted Subsidiary of Level
         3 for the purpose of financing such acquisition) and in an
         aggregate principal amount not to exceed the gross proceeds
         actually received by Level 3 or any Restricted Subsidiary in
         connection with such disposition;

                                       44
<PAGE>

  (10) Debt consisting of Permitted Interest Rate or Currency Protection
       Agreements;

  (11) Debt not otherwise permitted to be Incurred pursuant to clauses (1)
       through (10) above or clause (12) below, which, together with any
       other outstanding Debt Incurred pursuant to this clause (11), has an
       aggregate principal amount not in excess of $50 million at any time
       outstanding; and

  (12) the notes, Issue Date Purchase Money Debt and Debt under the Existing
       Notes, the New Convertible Notes, the Euro Notes and the related
       indentures and any restricted subsidiary guarantees issued in
       accordance with such related indentures.

    Notwithstanding any other provision of this "--Limitation on Consolidated
Debt" covenant, the maximum amount of Debt that Level 3 or a Restricted
Subsidiary may Incur pursuant to this "--Limitation on Consolidated Debt"
covenant shall not be deemed to be exceeded due solely to the result of
fluctuations in the exchange rates of currencies.

    For purposes of determining any particular amount of Debt under this "--
Limitation on Consolidated Debt" covenant,

  (1) Guarantees, Liens or obligations with respect to letters of credit
      supporting Debt otherwise included in the determination of such
      particular amount shall not be included, and

  (2) any Liens granted for the benefit of the notes pursuant to the
      provisions referred to in the "--Limitation on Liens" covenant
      described below

shall not be treated as Debt. For purposes of determining any particular amount
of Debt under this "--Limitation on Consolidated Debt" covenant, if any such
Debt denominated in a different currency is subject to a currency agreement
that constitutes a Permitted Interest Rate or Currency Protection Agreement
with respect to U.S. dollars covering all principal of, premium, if any, and
interest payable on such Debt, the amount of such Debt expressed in U.S.
dollars will be as provided in such currency agreement. For purposes of
determining compliance with this "--Limitation on Consolidated Debt" covenant,
in the event that an item of Debt meets the criteria of more than one of the
types of Debt described in the above clauses, Level 3, in its sole discretion,
shall classify such item of Debt and only be required to include the amount and
type of such Debt in one of such clauses.

    Limitation on Debt of Restricted Subsidiaries. Level 3 may not permit any
Restricted Subsidiary that is not a Guarantor to Incur any Debt except any and
all of the following (each of which shall be given independent effect):

  (1) Restricted Subsidiary Guarantees;

  (2) Debt outstanding on the Measurement Date;

  (3) Debt of Restricted Subsidiaries under Credit Facilities permitted to
      be Incurred pursuant to clause (2) of paragraph (b) of "--Limitation
      on Consolidated Debt;"

  (4) Purchase Money Debt of Restricted Subsidiaries permitted to be
      Incurred pursuant to clause (3) of paragraph (b) of "--Limitation on
      Consolidated Debt;"

  (5) Debt owed by a Restricted Subsidiary to Level 3 or a Restricted
      Subsidiary of Level 3 permitted to be Incurred pursuant to clause (6)
      of paragraph (b) of "--Limitation on Consolidated Debt;"

  (6) Debt of Restricted Subsidiaries consisting of Permitted Interest Rate
      or Currency Protection Agreements permitted to be Incurred pursuant to
      clause (10) of paragraph (b) of "--Limitation on Consolidated Debt;"

  (7) Debt of Restricted Subsidiaries permitted to be Incurred under clause
      (7) of paragraph (b) of "--Limitation on Consolidated Debt" or Issue
      Date Purchase Money Debt permitted to be Incurred under clause (12) of
      paragraph (b) of "--Limitation on Consolidated Debt;"

                                       45
<PAGE>

  (8) Debt of Restricted Subsidiaries permitted to be Incurred under clause
      (9) or (11) of paragraph (b) of "--Limitation on Consolidated Debt;"
      and

  (9) Debt which is Incurred to refinance any Debt of a Restricted
      Subsidiary permitted to be Incurred pursuant to clauses (1), (2), (3),
      (4) and (7) of this paragraph or this clause (9), in an aggregate
      principal amount (or if issued at a discount, the then-Accreted Value)
      not to exceed the aggregate principal amount (or if issued at a
      discount, the then-Accreted Value) of the Debt so refinanced, plus the
      amount of any premium required to be paid in connection with such
      refinancing pursuant to the terms of the Debt so refinanced or the
      amount of any premium reasonably determined by the board of directors
      of Level 3 as necessary to accomplish such refinancing by means of a
      tender offer or privately negotiated repurchase, plus the amount of
      expenses of Level 3 and the applicable Restricted Subsidiary Incurred
      in connection therewith;

      provided, however, that, in the case of any refinancing of Debt
      Incurred pursuant to clause (1), (2) or (7) or, if such Debt
      previously refinanced Debt Incurred pursuant to any such clause, this
      clause (9), the refinancing Debt by its terms, or by the terms of any
      agreement or instrument pursuant to which such Debt is Incurred,

     (X) does not provide for payments of principal at the stated maturity
         of such Debt or by way of a sinking fund applicable to such Debt
         or by way of any mandatory redemption, defeasance, retirement or
         repurchase of such Debt by Level 3 or any Restricted Subsidiary
         (including any redemption, retirement or repurchase which is
         contingent upon events or circumstances, but excluding any
         retirement required by virtue of acceleration of such Debt upon an
         event of default thereunder), in each case prior to the time the
         same are required by the terms of the Debt being refinanced, and

     (Y) does not permit redemption or other retirement (including pursuant
         to an offer to purchase made by Level 3 or a Restricted
         Subsidiary) of such Debt at the option of the holder thereof prior
         to the stated maturity of the Debt being refinanced,

      other than, in the case of clause (X) or (Y), any such payment,
      redemption or other retirement (including pursuant to an offer to
      purchase made by Level 3 or a Restricted Subsidiary) which is
      conditioned upon the change of control of Level 3 pursuant to
      provisions substantially similar to those contained in such indenture
      described under "--Change of Control Triggering Event."

    Notwithstanding any other provision of this "--Limitation on Debt of
Restricted Subsidiaries" covenant, the maximum amount of Debt that a Restricted
Subsidiary may Incur pursuant to this "--Limitation on Debt of Restricted
Subsidiaries" covenant shall not be deemed to be exceeded due solely as the
result of fluctuations in the exchange rates of currencies.

    For purposes of determining any particular amount of Debt under this "--
Limitation on Debt of Restricted Subsidiaries" covenant, Guarantees, Liens or
obligations with respect to letters of credit supporting Debt otherwise
included in the determination of such particular amount shall not be included.
For purposes of determining compliance with this "--Limitation on Debt of
Restricted Subsidiaries" covenant, in the event that an item of Debt meets the
criteria of more than one of the types of Debt described in the above clauses,
Level 3, in its sole discretion, shall classify such item of Debt and only be
required to include the amount and type of such Debt in one of such clauses.

    Limitation on Restricted Payments. (a) Level 3 may not, and may not permit
any Restricted Subsidiary to:

  (1) directly or indirectly, declare or pay any dividend, or make any
      distribution, in respect of its Capital Stock or to the holders
      thereof, excluding any dividends or distributions which are made
      solely to Level 3 or a Restricted Subsidiary (and, if such Restricted
      Subsidiary is not a Wholly Owned Subsidiary, to the other stockholders
      of such Restricted Subsidiary on a pro rata basis or on a basis that
      results in the receipt by Level 3 or a Restricted Subsidiary of
      dividends or distributions of

                                       46
<PAGE>

      greater value than it would receive on a pro rata basis) or any
      dividends or distributions payable solely in shares of Capital Stock
      of Level 3 (other than Disqualified Stock) or in options, warrants or
      other rights to acquire Capital Stock of Level 3 (other than
      Disqualified Stock);

  (2) purchase, redeem, or otherwise retire or acquire for value:

     (X) any Capital Stock of Level 3 or any Restricted Subsidiary of Level
         3, or

     (Y) any options, warrants or rights to purchase or acquire shares of
         Capital Stock of Level 3 or any Restricted Subsidiary or any
         securities convertible or exchangeable into shares of Capital
         Stock of Level 3 or any Restricted Subsidiary,

      except, in any such case, any such purchase, redemption or retirement
      or acquisition for value:

     (A) paid to Level 3 or a Restricted Subsidiary (or, in the case of any
         such purchase, redemption or other retirement or acquisition for
         value with respect to a Restricted Subsidiary that is not a Wholly
         Owned Subsidiary, to the other stockholders of such Restricted
         Subsidiary on a pro rata basis or on a basis that results in the
         receipt by Level 3 or a Restricted Subsidiary of payments of
         greater value than it would receive on a pro rata basis), or

     (B) paid solely in shares of Capital Stock (other than Disqualified
         Stock) of Level 3;

  (3) make any Investment (other than an Investment in Level 3 or a
      Restricted Subsidiary or a Permitted Investment) in any Person,
      including the Designation of any Restricted Subsidiary as an
      Unrestricted Subsidiary, or the Revocation of any such Designation,
      according to the covenant described under "--Limitation on
      Designations of Unrestricted Subsidiaries;"

  (4) redeem, defease, repurchase, retire or otherwise acquire or retire for
      value, prior to any scheduled maturity, repayment or sinking fund
      payment, Debt of Level 3 which is subordinate in right of payment to
      the notes (other than any redemption, defeasance, repurchase,
      retirement or other acquisition or retirement for value made in
      anticipation of satisfying a scheduled maturity, repayment or sinking
      fund obligation due within one year thereof); and

  (5) issue, transfer, convey, sell or otherwise dispose of Capital Stock of
      any Restricted Subsidiary to a Person other than Level 3 or another
      Restricted Subsidiary if the result thereof is that such Restricted
      Subsidiary shall cease to be a Restricted Subsidiary, in which event
      the amount of such Restricted Payment shall be the Fair Market Value
      of the remaining interest, if any, in such former Restricted
      Subsidiary held by Level 3 and the other Restricted Subsidiaries

(each of clauses (1) through (5) above being a Restricted Payment) if:

  (A) an Event of Default, or an event that with the passing of time or the
      giving of notice, or both, would constitute an Event of Default, shall
      have occurred and be continuing, or

  (B) upon giving effect to such Restricted Payment, Level 3 could not Incur
      at least $1.00 of additional Debt pursuant to the terms of the
      indentures described in paragraph (a) of "--Limitation on Consolidated
      Debt" above, or

  (C) upon giving effect to such Restricted Payment, the aggregate of all
      Restricted Payments made on or after the Measurement Date, including
      Restricted Payments made pursuant to clause (a) or (b) of the proviso
      at the end of this sentence, and Permitted Investments made on or
      after the Measurement Date pursuant to clause (9) or (10) of the
      definition thereof (the amount of any such Restricted Payment or
      Permitted Investment, if made other than in cash, to be based upon
      Fair Market Value) exceeds the sum of:

     (X) 50% of cumulative Consolidated Net Income (or, in the case that
         Consolidated Net Income shall be negative, 100% of such negative
         amount) since the end of the last full fiscal quarter prior to the
         Measurement Date through the last day of the last full fiscal
         quarter ending at least 45 days prior to the date of such
         Restricted Payment, plus

                                      47
<PAGE>

     (Y) in the case of any Revocation made after the Measurement Date, an
         amount equal to the lesser of the portion (proportionate to Level
         3's equity interest in the Subsidiary to which such Revocation
         relates) of the Fair Market Value of the net assets of such
         Subsidiary at the time of Revocation and the amount of Investments
         previously made (and treated as a Restricted Payment) by Level 3
         or any Restricted Subsidiary in such Subsidiary;

     provided, however, that Level 3 or a Restricted Subsidiary of Level 3
     may, without regard to the limitations in clause (C) but subject to
     clauses (A) and (B), make:

     (a) Restricted Payments in an aggregate amount not to exceed the sum
         of $50 million and the aggregate net cash proceeds received after
         the Measurement Date

            (i) as capital contributions to Level 3, from the issuance (other
                than to a Subsidiary or an employee stock ownership plan or
                trust established by Level 3 or any such Subsidiary for the
                benefit of their employees) of Capital Stock (other than
                Disqualified Stock) of Level 3, and

            (ii) from the issuance or sale of Debt of Level 3 or any
                 Restricted Subsidiary (other than to a Subsidiary, Level 3 or
                 an employee stock ownership plan or trust established by
                 Level 3 or any such Subsidiary for the benefit of their
                 employees) that after the Measurement Date has been converted
                 into or exchanged for Capital Stock (other than Disqualified
                 Stock) of Level 3, and

     (b) Investments in Persons engaged in the Telecommunications/IS
         Business in an aggregate amount not to exceed the after-tax gain
         on the sale, after the Measurement Date, of Special Assets to the
         extent sold for cash, Cash Equivalents, Telecommunications/IS
         Assets or the assumption of Debt of Level 3 or any Restricted
         Subsidiary (other than Debt that is subordinated to the notes or
         any applicable Restricted Subsidiary Guarantee) and release of
         Level 3 and all Restricted Subsidiaries from all liability on the
         Debt assumed.

     The aggregate net cash proceeds referred to in the immediately
     preceding clauses (a)(i) and (a)(ii) shall not be utilized to make
     Restricted Payments pursuant to such clauses to the extent such
     proceeds have been utilized to make Permitted Investments under clause
     (9) of the definition of "Permitted Investments."

  (b) Notwithstanding the foregoing limitation:

  (1) Level 3 may pay any dividend on Capital Stock of any class of Level 3
      within 60 days after the declaration thereof if, on the date when the
      dividend was declared, Level 3 could have paid such dividend in
      accordance with the foregoing provisions; provided, however, that at
      the time of such payment of such dividend, no other Event of Default
      shall have occurred and be continuing (or result therefrom);

  (2) Level 3 may repurchase any shares of its Common Stock or options to
      acquire its Common Stock from Persons who were formerly directors,
      officers or employees of Level 3 or any of its Subsidiaries or other
      Affiliates in an amount not to exceed $3 million in any 12-month
      period;

  (3) Level 3 and any Restricted Subsidiary may refinance any Debt otherwise
      permitted by clause (8) of paragraph (b) under "--Limitation on
      Consolidated Debt" above or clause (9) under "--Limitation on Debt of
      Restricted Subsidiaries" above;

  (4) Level 3 and any Restricted Subsidiary may retire or repurchase any
      Capital Stock of Level 3 or of any Restricted Subsidiary or any
      Subordinated Debt of Level 3 in exchange for, or out of the proceeds
      of the substantially concurrent sale (other than to a Subsidiary of
      Level 3 or an employee stock ownership plan or trust established by
      Level 3 or any such Subsidiary for the benefit of their employees) of,
      Capital Stock (other than Disqualified Stock) of Level 3, provided
      that the proceeds from any such exchange or sale of Capital Stock
      shall be excluded from any calculation pursuant to clause (a)(i) in
      the proviso at the end of paragraph (a) above or pursuant to clause
      (B) of the definition of "Invested Capital"; and

                                       48
<PAGE>

  (5) Level 3 may pay cash dividends in any amount not in excess of $50
      million in any 12-month period in respect of Preferred Stock of Level
      3 (other than Disqualified Stock).

The Restricted Payments described in the foregoing clauses (1), (2) and (5)
shall be included in the calculation of Restricted Payments; the Restricted
Payments described in clauses (3) and (4) shall be excluded in the calculation
of Restricted Payments.

    Limitation on Dividend and Other Payment Restrictions Affecting Restricted
Subsidiaries. (a) Level 3 may not, and may not permit any Restricted Subsidiary
to, directly or indirectly, create or otherwise cause or suffer to exist or
become effective any consensual encumbrance or restriction (other than pursuant
to law or regulation) on the ability of any Restricted Subsidiary:

  (1) to pay dividends (in cash or otherwise) or make any other
      distributions in respect of its Capital Stock owned by Level 3 or any
      other Restricted Subsidiary or pay any Debt or other obligation owed
      to Level 3 or any other Restricted Subsidiary;

  (2) to make loans or advances to Level 3 or any other Restricted
      Subsidiary; or

  (3) to transfer any of its Property to Level 3 or any other Restricted
      Subsidiary;

  (b) Notwithstanding the foregoing limitation, Level 3 may, and may permit
any Restricted Subsidiary to, create or otherwise cause or suffer to exist:

  (1) any encumbrance or restriction pursuant to any agreement in effect on
      the Measurement Date;

  (2) any customary (as conclusively determined in good faith by the Chief
      Financial Officer of Level 3) encumbrance or restriction applicable to
      a Restricted Subsidiary that is contained in an agreement or
      instrument governing or relating to Debt contained in any Credit
      Facilities or Purchase Money Debt,

     (A) provided that such encumbrances and restrictions permit the
         distribution of funds to Level 3 in an amount sufficient for Level
         3 to make the timely payment of interest, premium (if any) and
         principal (whether at stated maturity, by way of a sinking fund
         applicable thereto, by way of any mandatory redemption,
         defeasance, retirement or repurchase thereof, including upon the
         occurrence of designated events or circumstances or by virtue of
         acceleration upon an event of default, or by way of redemption or
         retirement at the option of the holder of the Debt, including
         pursuant to offers to purchase) according to the terms of such
         indenture and the notes and other Debt that is solely an
         obligation of Level 3, but

     (B) provided further that such agreement may nevertheless contain
         customary (as so determined) net worth, leverage, invested capital
         and other financial covenants, customary (as so determined)
         covenants regarding the merger of or sale of all or any
         substantial part of the assets of Level 3 or any Restricted
         Subsidiary, customary (as so determined) restrictions on
         transactions with affiliates and customary (as so determined)
         subordination provisions governing Debt owed to Level 3 or any
         Restricted Subsidiary;

  (3) any encumbrance or restriction pursuant to an agreement relating to
      any Acquired Debt, which encumbrance or restriction is not applicable
      to any Person, or the properties or assets of any Person, other than
      the Person so acquired;

  (4) any encumbrance or restriction pursuant to an agreement effecting a
      refinancing of Debt Incurred pursuant to an agreement referred to in
      clause (1), (2) or (3) of this paragraph (b), provided, however, that
      the provisions contained in such agreement relating to such
      encumbrance or restriction are no more restrictive (as so determined)
      in any material respect than the provisions contained in the agreement
      the subject thereof;

                                       49
<PAGE>

  (5) in the case of clause (3) of paragraph (a) above, any encumbrance or
      restriction contained in any security agreement (including a Capital
      Lease Obligation) securing Debt of Level 3 or a Restricted Subsidiary
      otherwise permitted under such indenture, but only to the extent such
      restrictions restrict the transfer of the Property subject to such
      security agreement;

  (6) in the case of clause (3) of paragraph (a) above, customary
      provisions:

     (A) that restrict the subletting, assignment or transfer of any
         Property that is a lease, license, conveyance or similar contract,

     (B) contained in asset sale or other asset disposition agreements
         limiting the transfer of the Property being sold or disposed of
         pending the closing of such sale or disposition, or

     (C) arising or agreed to in the ordinary course of business, not
         relating to any Debt,

      and that do not, individually or in the aggregate, detract from the
      value of Property of Level 3 or any Restricted Subsidiary in any
      manner material to Level 3 or any Restricted Subsidiary;

  (7) any encumbrance or restriction with respect to a Restricted Subsidiary
      imposed pursuant to an agreement which has been entered into for the
      sale or disposition of all or substantially all of the Capital Stock
      or Property of such Restricted Subsidiary, provided that the
      consummation of such transaction would not result in a Default or an
      Event of Default, that such restriction terminates if such transaction
      is abandoned and that the consummation or abandonment of such
      transaction occurs within one year of the date such agreement was
      entered into; and

  (8) any encumbrance or restriction pursuant to such indenture and the
      notes.

    Limitation on Liens. Level 3 may not, and may not permit any Restricted
Subsidiary to, directly or indirectly, Incur or suffer to exist any Lien on or
with respect to any Property now owned or acquired after the Measurement Date
to secure any Debt without making, or causing such Restricted Subsidiary to
make, effective provision for securing the notes equally and ratably with such
Debt as to such Property for so long as such Debt will be so secured or in the
event such Debt is Debt of Level 3 or a Guarantor which is subordinate in right
of payment to the notes or the applicable Restricted Subsidiary Guarantee,
prior to such Debt as to such Property for so long as such Debt will be so
secured.

    The foregoing restrictions shall not apply to:

  (1) Liens existing on the Measurement Date and securing Debt outstanding
      on the Measurement Date or Incurred on or after the Measurement Date
      pursuant to any Credit Facility to secure Debt permitted to be
      Incurred pursuant to clause (2) of paragraph (b) under "--Limitation
      on Consolidated Debt;"

  (2) Liens securing Debt in an amount which, together with the aggregate
      amount of Debt then outstanding or available under all Credit
      Facilities (together with all refinancing Debt then outstanding or
      available pursuant to clause (8) of paragraph (b) of "--Limitation on
      Consolidated Debt" in respect of Debt previously Incurred under Credit
      Facilities), does not exceed 1.5 times Level 3's Consolidated Cash
      Flow Available for Fixed Charges for the four full fiscal quarters
      preceding the Incurrence of such Lien for which Level 3's consolidated
      financial statements are available, determined on a pro forma basis as
      if such Debt had been Incurred and the proceeds thereof had been
      applied at the beginning of such four fiscal quarters;

  (3) Liens in favor of Level 3 or any Restricted Subsidiary; provided,
      however, that any subsequent issue or transfer of Capital Stock or
      other event that results in any such Restricted Subsidiary ceasing to
      be a Restricted Subsidiary or any subsequent transfer of the Debt
      secured by any such Lien (except to Level 3 or a Restricted
      Subsidiary) shall be deemed, in each case, to constitute the
      Incurrence of such Lien by the issuer thereof;

                                       50
<PAGE>

  (4) Liens to secure Purchase Money Debt permitted to be Incurred pursuant
      to clause (3) of paragraph (b) under "--Limitation on Consolidated
      Debt," provided that any such Lien may not extend to any Property
      other than the Telecommunications/IS Assets installed, constructed,
      acquired, leased, developed or improved with the proceeds of such
      Purchase Money Debt and any improvements or accessions thereto (it
      being understood that all Debt to any single lender or group of
      related lenders or outstanding under any single credit facility, and
      in any case relating to the same group or collection of
      Telecommunications/IS Assets financed thereby, shall be considered a
      single Purchase Money Debt, whether drawn at one time or from time to
      time);

  (5) Liens to secure Acquired Debt, provided that:

     (A) such Lien attaches to the acquired Property prior to the time of
         the acquisition of such Property, and

     (B) such Lien does not extend to or cover any other Property;

  (6) Liens to secure Debt Incurred to refinance, in whole or in part, Debt
      secured by any Lien referred to in the foregoing clauses (1), (4) and
      (5) or this clause (6) so long as such Lien does not extend to any
      other Property (other than improvements and accessions to the original
      Property) and the principal amount of Debt so secured is not increased
      except as otherwise permitted under clause (8) of paragraph (b) of "--
      Limitation on Consolidated Debt" or clause (9) of "--Limitation on
      Debt of Restricted Subsidiaries";

  (7) Liens not otherwise permitted by the foregoing clauses (1) through (6)
      securing Debt in an aggregate amount not to exceed 5% of Level 3's
      Consolidated Tangible Assets;

  (8) Liens granted after the Issue Date pursuant to "--Limitation on Liens"
      to secure the notes; and

  (9) Permitted Liens.

    Limitation on Sale and Leaseback Transactions. Level 3 may not, and may not
permit any Restricted Subsidiary to, directly or indirectly, enter into,
assume, Guarantee or otherwise become liable with respect to any Sale and
Leaseback Transaction, unless:

  (1) Level 3 or such Restricted Subsidiary would be entitled to Incur Debt
      in an amount equal to the Attributable Value of the Sale and Leaseback
      Transaction pursuant to the covenant described under "--Limitation on
      Consolidated Debt" above, and a Lien pursuant to the covenant
      described under "--Limitation on Liens" above, equal in amount to the
      Attributable Value of the Sale and Leaseback Transaction, without also
      securing the notes; and

  (2) the Sale and Leaseback Transaction is treated as an Asset Disposition
      and all of the conditions of such indenture described under "--
      Limitation on Asset Dispositions" below (including the provisions
      concerning the application of Net Available Proceeds) are satisfied
      with respect to such Sale and Leaseback Transaction, treating all of
      the consideration received in such Sale and Leaseback Transaction as
      Net Available Proceeds for purposes of such covenant.

    Limitation on Asset Dispositions. Level 3 may not, and may not permit any
Restricted Subsidiary to, make any Asset Disposition unless:

  (1) Level 3 or the Restricted Subsidiary, as the case may be, receives
      consideration for such disposition at least equal to the Fair Market
      Value for the Property sold or disposed of as determined by the board
      of directors of Level 3 in good faith and evidenced by a resolution of
      the board of directors of Level 3 filed with the trustee; and

  (2) at least 75% of the consideration for such disposition consists of
      cash or Cash Equivalents or the assumption of Debt of Level 3 or any
      Restricted Subsidiary (other than Debt that is subordinated to the
      notes or any applicable Restricted Subsidiary Guarantee) and release
      of Level 3 and all Restricted Subsidiaries from all liability on the
      Debt assumed (or if less than 75%, the remainder of

                                       51
<PAGE>

      such consideration consists of Telecommunications/IS Assets);
      provided, however, that, to the extent such disposition involves
      Special Assets, all or any portion of the consideration may, at Level
      3's election, consist of Property other than cash, Cash Equivalents,
      the assumption of Debt or Telecommunications/IS Assets.

    The Net Available Proceeds (or any portion thereof) from Asset Dispositions
may be applied by Level 3 or a Restricted Subsidiary, to the extent Level 3 or
such Restricted Subsidiary elects (or is required by the terms of any Debt):

  (1) to the permanent repayment or reduction of Debt then outstanding under
      any Credit Facility, to the extent such Credit Facility would require
      such application or prohibit payments pursuant to the Offer to
      Purchase described in the following paragraph (other than Debt owed to
      Level 3 or any Affiliate of Level 3); or

  (2) to reinvest in Telecommunications/IS Assets (including by means of an
      Investment in Telecommunications/IS Assets by a Restricted Subsidiary
      with Net Available Proceeds received by Level 3 or another Restricted
      Subsidiary).

    Any Net Available Proceeds from an Asset Disposition not applied in
accordance with the preceding paragraph within 360 days (or, in the case of a
disposition of Special Assets identified in clause (1) of the definition
thereof in which the Net Available Proceeds exceed $500 million, 540 days) from
the date of the receipt of such Net Available Proceeds shall constitute Excess
Proceeds. When the aggregate amount of Excess Proceeds exceeds $10 million,
Level 3 will be required to make an Offer to Purchase with such Excess Proceeds
on a pro rata basis according to principal amount (or, in the case of Debt
issued at a discount, the Accreted Value) for:

  (1) outstanding notes at a price in cash equal to 100% of the principal
      amount or Accreted Value, as applicable, of the notes on the purchase
      date plus accrued and unpaid interest (if any) thereon (subject to the
      right of holders of record on the relevant record date to receive
      interest due on the relevant interest payment date); and

  (2) any other Debt of Level 3 or any Guarantor that is pari passu with the
      notes, or any Debt of a Restricted Subsidiary that is not a Guarantor,
      at a price no greater than 100% of the principal amount thereof plus
      accrued and unpaid interest (if any) to the purchase date (or 100% of
      the then-Accreted Value plus accrued and unpaid interest (if any) to
      the purchase date in the case of original issue discount Debt), to the
      extent, in the case of this clause (2), required under the terms
      thereof (other than Debt owed to Level 3 or any Affiliate of Level 3).

    To the extent there are any remaining Excess Proceeds following the
completion of the Offer to Purchase, Level 3 shall apply such Excess Proceeds
to the repayment of other Debt of Level 3 or any Restricted Subsidiary, to the
extent permitted or required under the terms thereof. Any other remaining
Excess Proceeds may be applied to any use as determined by Level 3 which is not
otherwise prohibited by such indenture, and the amount of Excess Proceeds shall
be reset to zero.

    Limitation on Issuance and Sales of Capital Stock of Restricted
Subsidiaries. Level 3 may not, and may not permit any Restricted Subsidiary to,
issue, transfer, convey, sell or otherwise dispose of any shares of Capital
Stock of a Restricted Subsidiary or securities convertible or exchangeable
into, or options, warrants, rights or any other interest with respect to,
Capital Stock of a Restricted Subsidiary to any Person other than Level 3 or a
Restricted Subsidiary except:

  (1) a sale of all of the Capital Stock of such Restricted Subsidiary owned
      by Level 3 and any Restricted Subsidiary that complies with the
      provisions described under "--Limitation on Asset Dispositions" above
      to the extent such provisions apply;

                                       52
<PAGE>

  (2)   in a transaction that results in such Restricted Subsidiary becoming a
        Joint Venture, provided:

       (A) such transaction complies with the provisions described under "--
           Limitation on Asset Dispositions" above to the extent such
           provisions apply, and

       (B) the remaining interest of Level 3 or any other Restricted
           Subsidiary in such Joint Venture would have been permitted as a
           new Restricted Payment or Permitted Investment under the
           provisions of "--Limitation on Restricted Payments" above;

  (3)   the issuance, transfer, conveyance, sale or other disposition of shares
        of such Restricted Subsidiary so long as after giving effect to such
        transaction such Restricted Subsidiary remains a Restricted Subsidiary
        and such transaction complies with the provisions described under "--
        Limitation on Asset Dispositions" to the extent such provisions apply;

  (4)   the transfer, conveyance, sale or other disposition of shares required
        by applicable law or regulation;

  (5)   if required, the issuance, transfer, conveyance, sale or other
        disposition of directors' qualifying shares;

  (6)   Disqualified Stock issued in exchange for, or upon conversion of, or the
        proceeds of the issuance of which are used to refinance, shares of
        Disqualified Stock of such Restricted Subsidiary, provided that the
        amounts of the redemption obligations of such Disqualified Stock shall
        not exceed the amounts of the redemption obligations of, and such
        Disqualified Stock shall have redemption obligations no earlier than
        those required by, the Disqualified Stock being exchanged, converted or
        refinanced;

  (7)   in a transaction where Level 3 or a Restricted Subsidiary acquires at
        the same time not less than its Proportionate Interest in such
        issuance of Capital Stock;

  (8)   Capital Stock issued and outstanding on the Measurement Date;

  (9)   Capital Stock of a Restricted Subsidiary issued and outstanding prior
        to the time that such Person becomes a Restricted Subsidiary so long
        as such Capital Stock was not issued in contemplation of such Person's
        becoming a Restricted Subsidiary or otherwise being acquired by Level
        3; and

  (10)  an issuance of Preferred Stock of a Restricted Subsidiary (other
        than Preferred Stock convertible or exchangeable into Common Stock
        of any Restricted Subsidiary) otherwise permitted by such indenture.

    Transactions with Affiliates. Level 3 will not, and will not permit any of
its Restricted Subsidiaries to, directly or indirectly, sell, lease, transfer,
or otherwise dispose of any of its Property to, or purchase any Property from,
or enter into any contract, agreement, understanding, loan, advance, Guarantee
or transaction (including the rendering of services) with or for the benefit
of, any Affiliate (each of the foregoing, an Affiliate Transaction), unless:

  (a)   such Affiliate Transaction or series of Affiliate Transactions is:

  (1)   in the best interest of Level 3 or such Restricted Subsidiary, and

  (2)   on terms that are no less favorable to Level 3 or such Restricted
        Subsidiary than those that would have been obtained in a comparable
        arm's-length transaction by Level 3 or such Restricted Subsidiary with
        a Person that is not an Affiliate (or, in the event that there are no
        comparable transactions involving Persons who are not Affiliates of
        Level 3 or the relevant Restricted Subsidiary to apply for comparative
        purposes, is otherwise on terms that, taken as a whole, Level 3 has
        determined to be fair to Level 3 or the relevant Restricted
        Subsidiary); and

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<PAGE>

  (b) Level 3 delivers to the trustee:

  (1) with respect to any Affiliate Transaction or series of Affiliate
      Transactions involving aggregate payments in excess of $10 million but
      less than $15 million, a certificate of the chief executive, operating
      or financial officer of Level 3 evidencing such officer's
      determination that such Affiliate Transaction or series of Affiliate
      Transactions complies with clause (a) above, and

  (2) with respect to any Affiliate Transaction or series of Affiliate
      Transactions involving aggregate payments equal to or in excess of $15
      million, a board resolution certifying that such Affiliate Transaction
      or series of Affiliate Transactions complies with clause (a) above and
      that such Affiliate Transaction or series of Affiliate Transactions
      has been approved by the board of directors, including a majority of
      the disinterested members of the board of directors,

      provided that, in the event that there shall not be at least two
      disinterested members of the board of directors with respect to the
      Affiliate Transaction, Level 3 shall, in addition to such board
      resolution, file with the trustee a written opinion from an investment
      banking firm of national standing in the United States which, in the
      good faith judgment of the board of directors of Level 3, is
      independent with respect to Level 3 and its Affiliates and qualified
      to perform such task, which opinion shall be to the effect that the
      consideration to be paid or received in connection with such Affiliate
      Transaction is fair, from a financial point of view, to Level 3 or
      such Restricted Subsidiary.

    Notwithstanding the foregoing, the following shall not be deemed Affiliate
Transactions:

  (1) any employment agreement entered into by Level 3 or any of its
      Restricted Subsidiaries in the ordinary course of business and
      consistent with industry practice;

  (2) any agreement or arrangement with respect to the compensation of a
      director or officer of Level 3 or any Restricted Subsidiary approved
      by a majority of the disinterested members of the board of directors
      and consistent with industry practice;

  (3) transactions between or among Level 3 and its Restricted Subsidiaries,
      provided that no more than 5% of the Voting Stock (on a fully diluted
      basis) of any such Restricted Subsidiary is owned by an Affiliate of
      Level 3 (other than a Restricted Subsidiary);

  (4) Restricted Payments and Permitted Investments permitted by the
      covenant described under "--Limitation on Restricted Payments" (other
      than Investments in Affiliates that are not Level 3 or Restricted
      Subsidiaries);

  (5) transactions pursuant to the terms of any agreement or arrangement as
      in effect on the Measurement Date; and

  (6) transactions with respect to wireline or wireless transmission
      capacity, the lease or sharing or other use of cable or fiber optic
      lines, equipment, rights-of-way or other access rights, between Level
      3 (or any Restricted Subsidiary) and any other Person, provided that,
      in the case of this clause (6), such transaction complies with clause
      (a) in the immediately preceding paragraph.

    Change of Control Triggering Event. Within 30 days of the occurrence of
both a Change of Control and a Rating Decline with respect to the notes (a
Change of Control Triggering Event), Level 3 will be required to make an Offer
to Purchase all outstanding notes at a price in cash equal to 101% of the
principal amount or Accreted Value, as applicable, of the notes on the purchase
date plus any accrued and unpaid interest (if any) to such purchase date
(subject to the right of holders of record on the relevant record date to
receive interest due on the relevant interest payment date).

    A Change of Control means the occurrence of any of the following events:

  (1) if any person or group (as such terms are used in Sections 13(d) and
      14(d) of the Exchange Act or any successor provisions to either of the
      foregoing), including any group acting for the purpose of acquiring,
      holding, voting or disposing of securities within the meaning of Rule
      13d-5(b)(1) under

                                       54
<PAGE>

      the Exchange Act, other than any one or more of the Permitted Holders,
      becomes the beneficial owner (as defined in Rule 13d-3 under the
      Exchange Act, except that a person will be deemed to have beneficial
      ownership of all shares that any such person has the right to acquire,
      whether such right is exercisable immediately or only after the
      passage of time), directly or indirectly, of 35% or more of the total
      voting power of the Voting Stock of Level 3;

      provided, however, that the Permitted Holders are the beneficial
      owners (as defined in Rule 13d-3 under the Exchange Act, except that a
      person will be deemed to have beneficial ownership of all shares that
      any such person has the right to acquire, whether such right is
      exercisable immediately or only after the passage of time), directly
      or indirectly, in the aggregate of a lesser percentage of the total
      voting power of the Voting Stock of Level 3 than such other person or
      group (for purposes of this clause (1), such person or group shall be
      deemed to beneficially own any Voting Stock of a corporation (the
      specified corporation) held by any other corporation (the parent
      corporation) so long as such person or group beneficially owns,
      directly or indirectly, in the aggregate a majority of the total
      voting power of the Voting Stock of such parent corporation); or

  (2) the sale, transfer, assignment, lease, conveyance or other
      disposition, directly or indirectly, of all or substantially all the
      assets of Level 3 and the Restricted Subsidiaries, considered as a
      whole (other than a disposition of such assets as an entirety or
      virtually as an entirety to a Wholly Owned Restricted Subsidiary or
      one or more Permitted Holders) shall have occurred; or

  (3) during any period of two consecutive years, individuals who at the
      beginning of such period constituted the board of directors of Level 3
      (together with any new directors whose election or appointment by such
      board or whose nomination for election by the shareholders of Level 3
      was approved by a vote of a majority of the directors then still in
      office who were either directors at the beginning of such period or
      whose election or nomination for election was previously so approved)
      cease for any reason to constitute a majority of the board of
      directors of Level 3 then in office; or

  (4) the shareholders of Level 3 shall have approved any plan of
      liquidation or dissolution of Level 3.

    In the event that Level 3 makes an Offer to Purchase the notes, Level 3
intends to comply with any applicable securities laws and regulations,
including any applicable requirements of Section 14(e) of, and Rule 14e-1
under, the Exchange Act.

    The existence of the holders' right to require, subject to certain
conditions, Level 3 to repurchase notes upon a Change of Control Triggering
Event may deter a third party from acquiring Level 3 in a transaction that
constitutes a Change of Control. If an Offer to Purchase is made, there can be
no assurance that Level 3 will have sufficient funds to pay the Purchase Price
for all notes tendered by holders seeking to accept the Offer to Purchase. In
addition, instruments governing other Debt of Level 3 may prohibit Level 3
from purchasing any notes prior to their Stated Maturity, including pursuant
to an Offer to Purchase, or require that such Debt be repurchased upon a
Change of Control. In the event that an Offer to Purchase occurs at a time
when Level 3 does not have sufficient available funds to pay the Purchase
Price for all notes tendered pursuant to such Offer to Purchase or a time when
Level 3 is prohibited from purchasing the notes, and Level 3 is unable either
to obtain the consent of the holders of the relevant Debt or to repay such
Debt, an Event of Default would occur under the indentures.

    In addition, one of the events that constitutes a Change of Control under
the indentures is a sale, transfer, assignment, lease, conveyance or other
disposition of all or substantially all of the assets of Level 3. The
indentures will be governed by New York law, and there is no established
definition under New York law of substantially all of the assets of a
corporation. Accordingly, if Level 3 were to engage in a transaction in which
it disposed of less than all of its assets, a question of interpretation could
arise as to whether such disposition was of substantially all of its assets
and whether Level 3 was required to make an Offer to Purchase.

    Except as described herein with respect to a Change of Control, the
indentures do not contain any other provisions that permit holders of notes to
require that Level 3 repurchase or redeem notes in the event of a takeover,
recapitalization or similar restructuring.

                                      55
<PAGE>

    Reports. Whether or not Level 3 is subject to Section 13(a) or 15(d) of the
Exchange Act, or any successor provision thereto, Level 3 shall file with the
SEC the annual reports, quarterly reports and other documents which Level 3
would have been required to file with the SEC pursuant to such Section 13(a) or
15(d) or any successor provision thereto if Level 3 were subject thereto, such
documents to be filed with the SEC on or prior to the respective dates (the
Required Filing Dates) by which Level 3 would have been required to file them.
Level 3 shall also in any event:

  (1) within 15 days of each Required Filing Date:

     (A) transmit by mail to all holders, as their names and addresses
         appear in the Security Register, without cost to such holders, and

     (B) file with the trustee copies of the annual reports, quarterly
         reports and other documents (without exhibits) which Level 3 would
         have been required to file with the SEC pursuant to Section 13(a)
         or 15(d) of the Exchange Act or any successor provisions thereto
         if Level 3 were subject thereto; and

  (2) if filing such documents by Level 3 with the SEC is not permitted
      under the Exchange Act, promptly upon written request, supply copies
      of such documents (without exhibits) to any prospective holder.

    Limitation on Designations of Unrestricted Subsidiaries. The indentures
provide that Level 3 will not designate any Subsidiary of Level 3 (other than a
newly created Subsidiary in which no Investment has previously been made) as an
Unrestricted Subsidiary under the applicable indenture (a Designation) unless:

  (1) no Default or Event of Default shall have occurred and be continuing
      at the time of or after giving effect to such Designation;

  (2) immediately after giving effect to such Designation, Level 3 would be
      able to Incur $1.00 of Debt under paragraph (a) of "--Limitation on
      Consolidated Debt;" and

  (3) Level 3 would not be prohibited under the applicable indenture from
      making an Investment at the time of Designation (assuming the
      effectiveness of such Designation) in an amount (the Designation
      Amount) equal to the portion (proportionate to the Level 3's equity
      interest in such Restricted Subsidiary) of the Fair Market Value of
      the net assets of such Restricted Subsidiary on such date.

    In the event of any such Designation, Level 3 shall be deemed to have made
an Investment constituting a Restricted Payment pursuant to the covenant "--
Limitation on Restricted Payments" for all purposes of the applicable indenture
in the Designation Amount; provided, however, that, upon a Revocation of any
such Designation of a Subsidiary, Level 3 shall be deemed to continue to have a
permanent Investment in an Unrestricted Subsidiary of an amount (if positive)
equal to:

  (1) Level 3's Investment in such Subsidiary at the time of such
      Revocation; less

  (2) the portion (proportionate to the Level 3's equity interest in such
      Subsidiary) of the Fair Market Value of the net assets of such
      Subsidiary at the time of such Revocation.

    At the time of any Designation of any Subsidiary as an Unrestricted
Subsidiary, such Subsidiary shall not own any Capital Stock of Level 3 or any
Restricted Subsidiary. The applicable indenture further provides that neither
Level 3 nor any Restricted Subsidiary shall at any time:

  (1) provide credit support for, or a Guarantee of, any Debt of any
      Unrestricted Subsidiary (including any undertaking, agreement or
      instrument evidencing such Debt); provided that Level 3 or a
      Restricted Subsidiary may pledge Capital Stock or Debt of any
      Unrestricted Subsidiary on a nonrecourse basis such that the pledgee
      has no claim whatsoever against Level 3 other than to obtain such
      pledged Capital Stock or Debt;

  (2) be directly or indirectly liable for any Debt of any Unrestricted
      Subsidiary; or

                                       56
<PAGE>

  (3) be directly or indirectly liable for any Debt which provides that the
      holder thereof may (upon notice, lapse of time or both) declare a
      default thereon or cause the payment thereof to be accelerated or
      payable prior to its final scheduled maturity upon the occurrence of a
      default with respect to any Debt, Lien or other obligation of any
      Unrestricted Subsidiary (including any right to take enforcement
      action against such Unrestricted Subsidiary),

except in the case of clause (1) or (2) to the extent permitted under "--
Limitation on Restricted Payments" and "--Transactions with Affiliates."

    Unless Designated as an Unrestricted Subsidiary, any Person that becomes a
Subsidiary of Level 3 will be classified as a Restricted Subsidiary; provided,
however, that such Subsidiary shall not be designated as a Restricted
Subsidiary and shall be automatically classified as an Unrestricted Subsidiary
if either of the requirements set forth in clauses (1) and (2) of the
immediately following paragraph will not be satisfied immediately following
such classification. Except as provided in the first sentence of this "--
Limitation on Designations of Unrestricted Subsidiaries," no Restricted
Subsidiary may be redesignated as an Unrestricted Subsidiary.

    Each applicable indenture provides that a Designation may be revoked (a
Revocation) by a resolution of the board of directors of Level 3 delivered to
the trustee, provided that Level 3 will not make any Revocation unless:

  (1) no Default or Event of Default shall have occurred and be continuing
      at the time of and after giving effect to such Revocation; and

  (2) all Liens and Debt of such Unrestricted Subsidiary outstanding
      immediately following such Revocation would, if Incurred at such time,
      have been permitted to be Incurred at such time for all purposes of
      the applicable indenture.

    All Designations and Revocations must be evidenced by resolutions of the
board of directors of Level 3 delivered to the trustee:

  (1) certifying compliance with the foregoing provisions; and

  (2)  giving the effective date of such Designation or Revocation, such
       delivery to the trustee to occur within 45 days after the end of the
       fiscal quarter of Level 3 in which such Designation or Revocation is
       made (or, in the case of a Designation or Revocation made during the
       last fiscal quarter of Level 3's fiscal year, within 90 days after
       the end of such fiscal year).

Mergers, Consolidations and Certain Sales of Assets

    Level 3 may not, in a single transaction or a series of related
transactions, consolidate with or merge into any other Person or Persons or
permit any other Person to consolidate with or merge into Level 3 or, directly
or indirectly, transfer, sell, lease, convey or otherwise dispose of all or
substantially all its assets to any other Person or Persons unless:

  (1) in a transaction in which Level 3 is not the surviving Person or in
      which Level 3 transfers, sells, leases, conveys or otherwise disposes
      of all or substantially all of its assets to any other Person, the
      resulting, surviving or transferee Person (the successor entity) is
      organized under the laws of the United States or any State thereof or
      the District of Columbia and shall expressly assume, by a supplemental
      indenture executed and delivered to the trustee in form satisfactory
      to the trustee, all of Level 3's obligations under the indentures;

  (2) immediately before and after giving effect to such transaction and
      treating any Debt which becomes an obligation of Level 3 (or the
      successor entity) or a Restricted Subsidiary as a result of such
      transaction as having been Incurred by Level 3 or such Restricted
      Subsidiary at the time of the transaction, no Default or Event of
      Default shall have occurred and be continuing;

  (3) immediately after giving effect to such transaction, the Consolidated
      Net Worth of Level 3 (or the successor entity) is equal to or greater
      than that of Level 3 immediately prior to the transaction;

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  (4) immediately after giving effect to such transaction and treating any
      Debt which becomes an obligation of Level 3 (or the successor entity)
      or a Restricted Subsidiary as a result of such transaction as having
      been Incurred by Level 3 or such Restricted Subsidiary at the time of
      the transaction, Level 3 (or the successor entity) could Incur at
      least $1.00 of additional Debt pursuant to the provisions of the
      indentures described in paragraph (a) under "--Covenants--Limitation
      on Consolidated Debt" above;

  (5) if, as a result of any such transaction, Property of Level 3 (or the
      successor entity) or any Restricted Subsidiary would become subject to
      a Lien prohibited by the provisions of the indentures described under
      "--Covenants--Limitation on Liens" above, Level 3 (or the successor
      entity) shall have secured the notes as required by said covenant;

  (6) in the case of a transfer, sale, lease, conveyance or other
      disposition of all or substantially all of the assets of Level 3, such
      assets shall have been transferred as an entirety or virtually as an
      entirety to one Person and such Person shall have complied with all
      the provisions of this paragraph; and

  (7) certain other conditions are met.

    The successor entity shall succeed to, and be substituted for, and may
exercise every right and power of Level 3 under the indentures, and the
predecessor Company, except in the case of a lease, shall be released from all
its obligations under the indentures.

Definitions

    Set forth below is a summary of some of the defined terms used in the
indentures. Reference is made to the indentures for the full definition of all
such terms, as well as any other terms used herein for which no definition is
provided.

    Accreted Value of any 2010 senior discount note as of or to any date of
determination prior to March 15, 2005, or of any other Debt issued at a price
less than the principal amount at stated maturity, means, as of any date of
determination, an amount equal to the sum of:

  (1) the issue price of such Debt as determined in accordance with Section
      1273 of the Internal Revenue Code or any successor provisions (which,
      in the case of the 2010 senior discount notes, will be $533.08 per
      $1,000 principal amount at maturity of the 2010 senior discount notes)
      plus

  (2) the aggregate of the portions of the original issue discount (the
      excess of the amounts considered as part of the "stated redemption
      price at maturity" of such Debt within the meaning of Section
      1273(a)(2) of the Internal Revenue Code or any successor provisions,
      whether denominated as principal or interest, over the issue price of
      such Debt) that shall theretofore have accrued pursuant to Section
      1272 of the Internal Revenue Code (without regard to Section
      1272(a)(7) of the Internal Revenue Code) from the date of issue of
      such Debt to the date of determination (which amount, in the case of
      the 2010 senior discount notes, shall be amortized on a daily basis
      and compounded semiannually on each March 15 and September 15 at a
      rate of 12 7/8% per annum from the Issue Date through the date of
      determination on the basis of a 360- day year of twelve 30-day
      months), minus all amounts theretofore paid in respect of such Debt,
      which amounts are considered as part of the "stated redemption price
      at maturity" of such Debt within the meaning of Section 1273(a)(2) of
      the Internal Revenue Code or any successor provisions (whether such
      amounts paid were denominated principal or interest).

    The Accreted Value of any 2010 senior discount note on or after March 15,
2005 will mean the principal amount at maturity of such 2010 senior discount
note. Notwithstanding the foregoing, if Level 3 elects to commence the accrual
of cash interest on the 2010 senior discount notes on or after March 15, 2003
and prior to March 15, 2005, the 2010 senior discount notes shall cease to
accrete, and the Accreted Value and the principal amount at maturity of such
2010 senior discount note shall be the Accreted Value on the date of
commencement of such accrual as calculated in accordance with the first
sentence of this definition.

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    Acquired Debt means, with respect to any specified Person:

  (1) Debt of any other Person existing at the time such Person merges with
      or into or consolidates with or becomes a Subsidiary of such specified
      Person; and

  (2) Debt secured by a Lien encumbering any Property acquired by such
      specified Person, which Debt was not incurred in anticipation of, and
      was outstanding prior to, such merger, consolidation or acquisition.

    Affiliate of any Person means any other Person directly or indirectly
controlling or controlled by or under direct or indirect common control with
such Person. For the purposes of this definition, control when used with
respect to any Person means the power to direct the management and policies of
such Person, directly or indirectly, whether through the ownership of voting
securities, by contract or otherwise; and the terms controlling and controlled
have meanings correlative to the foregoing. For purposes of the covenants
described under "--Covenants--Transactions with Affiliates" and "--Limitation
on Asset Dispositions" and the definition of Telecommunications/IS Assets only,
Affiliate shall also mean any beneficial owner of shares representing 10% or
more of the total voting power of the Voting Stock (on a fully diluted basis)
of Level 3 or of rights or warrants to purchase such Voting Stock (whether or
not currently exercisable) and any Person who would be an Affiliate of any such
beneficial owner pursuant to the first sentence hereof.

    Asset Disposition means any transfer, conveyance, sale, lease, issuance or
other disposition by Level 3 or any Restricted Subsidiary in one or more
related transactions (including a consolidation or merger or other sale of any
such Restricted Subsidiary with, into or to another Person in a transaction in
which such Restricted Subsidiary ceases to be a Restricted Subsidiary of Level
3, but excluding a disposition by a Restricted Subsidiary to Level 3 or a
Restricted Subsidiary or by Level 3 to a Restricted Subsidiary) of:

  (1) shares of Capital Stock or other ownership interests of a Restricted
      Subsidiary (other than as permitted by clause (5), (6), (7) or (9) of
      the covenant described under "--Covenants--Limitation on Issuance and
      Sales of Capital Stock of Restricted Subsidiaries"),

  (2) substantially all of the assets of Level 3 or any Restricted
      Subsidiary representing a division or line of business or

  (3) other Property of Level 3 or any Restricted Subsidiary outside of the
      ordinary course of business (excluding any transfer, conveyance, sale,
      lease or other disposition of equipment that is obsolete or no longer
      used by or useful to Level 3, provided that Level 3 has delivered to
      the trustee an Officers' Certificate stating that such criteria are
      satisfied);

provided in each case that the aggregate consideration for such transfer,
conveyance, sale, lease or other disposition is equal to $5 million or more in
any 12-month period.

    The following shall not be Asset Dispositions:

  (1) Permitted Telecommunications Capital Asset Dispositions that comply
      with clause (1) of the first paragraph under "--Covenants--Limitation
      on Asset Dispositions;"

  (2) when used with respect to Level 3, any Asset Disposition permitted
      pursuant to "--Mergers, Consolidations and Certain Sales of Assets"
      which constitutes a disposition of all or substantially all of the
      assets of Level 3 and the Restricted Subsidiaries taken as a whole;

  (3) Receivables sales constituting Debt under Qualified Receivable
      Facilities permitted to be Incurred pursuant to "--Covenants--
      Limitation on Consolidated Debt;" and

  (4)  any disposition that constitutes a Permitted Investment or a
       Restricted Payment permitted by the covenant described under "--
       Covenants--Limitation on Restricted Payments."

    Attributable Value means, as to any particular lease under which any Person
is at the time liable other than a Capital Lease Obligation, and at any date as
of which the amount thereof is to be determined, the total net amount of rent
required to be paid by such Person under such lease during the remaining term
thereof (including any period for which such lease has been extended) as
determined in accordance with generally

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<PAGE>

accepted accounting principles, discounted from the last date of such remaining
term to the date of determination at a rate per annum equal to the discount
rate which would be applicable to a Capital Lease Obligation with like term in
accordance with generally accepted accounting principles. The net amount of
rent required to be paid under any such lease for any such period shall be the
aggregate amount of rent payable by the lessee with respect to such period
after excluding amounts required to be paid on account of insurance, taxes,
assessments, utility, operating and labor costs and similar charges. In the
case of any lease which is terminable by the lessee upon the payment of
penalty, such net amount shall also include the lesser of the amount of such
penalty (in which case no rent shall be considered as required to be paid under
such lease subsequent to the first date upon which it may be so terminated) or
the rent which would otherwise be required to be paid if such lease is not so
terminated. Attributable Value means, as to a Capital Lease Obligation, the
principal amount thereof.

    Capital Lease Obligation of any Person means the obligation to pay rent or
other payment amount under a lease of (or other Debt arrangements conveying the
right to use) Property of such Person which is required to be classified and
accounted for as a capital lease or a liability on the face of a balance sheet
of such Person in accordance with generally accepted accounting principles (a
Capital Lease). The stated maturity of such obligation shall be the date of the
last payment of rent or any other amount due under such lease prior to the
first date upon which such lease may be terminated by the lessee without
payment of a penalty. The principal amount of such obligation shall be the
capitalized amount thereof that would appear on the face of a balance sheet of
such Person in accordance with generally accepted accounting principles.

    Capital Stock of any Person means any and all shares, interests,
participations or other equivalents (however designated) of corporate stock or
other equity participations, including partnership interests, whether general
or limited, of such Person and any rights (other than debt securities
convertible or exchangeable into an equity interest), warrants or options to
acquire an equity interest in such Person.

    Cash Equivalents means:

  (1)  Government Securities maturing, or subject to tender at the option of
       the holder thereof, within two years after the date of acquisition
       thereof;

  (2)  time deposits and certificates of deposit of any commercial bank
       organized in the U.S. having capital and surplus in excess of $500
       million or a commercial bank organized under the law of any other
       country that is a member of the OECD having total assets in excess of
       $500 million (or its foreign currency equivalent at the time) with a
       maturity date not more than one year from the date of acquisition;

  (3)  repurchase obligations with a term of not more than 30 days for
       underlying securities of the types described in clause (1) above
       entered into with:

     (A) any bank meeting the qualifications specified in clause (2) above,
         or

     (B) any primary government securities dealer reporting to the Market
         Reports Division of the Federal Reserve Bank of New York;

  (4)  direct obligations issued by any state of the United States or any
       political subdivision of any such state or any public instrumentality
       thereof maturing, or subject to tender at the option of the holder
       thereof, within 90 days after the date of acquisition thereof,
       provided that, at the time of acquisition, the long-term debt of such
       state, political subdivision or public instrumentality has a rating
       of A (or higher) from S&P or A-2 (or higher) from Moody's (or, if at
       any time neither S&P nor Moody's shall be rating such obligations,
       then an equivalent rating from such other nationally recognized
       rating service acceptable to the trustee);

  (5)  commercial paper issued by the parent corporation of any commercial
       bank organized in the United States having capital and surplus in
       excess of $500 million or a commercial bank organized under the laws
       of any other country that is a member of the OECD having total assets
       in excess of $500 million (or its foreign currency equivalent at the
       time), and commercial paper issued by others

                                       60
<PAGE>

      having one of the two highest ratings obtainable from either S&P or
      Moody's (or, if at any time neither S&P nor Moody's shall be rating
      such obligations, then from such other nationally recognized rating
      service acceptable to the trustee) and in each case maturing within
      one year after the date of acquisition;

  (6)  overnight bank deposits and bankers' acceptances at any commercial
       bank organized in the U.S. having capital and surplus in excess of
       $500 million or a commercial bank organized under the laws of any
       other country that is a member of the OECD having total assets in
       excess of $500 million (or its foreign currency equivalent at the
       time);

  (7)  deposits available for withdrawal on demand with a commercial bank
       organized in the U.S. having capital and surplus in excess of $500
       million or a commercial bank organized under the laws of any other
       country that is a member of the OECD having total assets in excess of
       $500 million (or its foreign currency equivalent at the time); and

  (8)  investments in money market funds substantially all of whose assets
       comprise securities of the types described in clauses (1) through
       (7).

    Change of Control has the meaning set forth under "--Covenants--Change of
Control Triggering Event" above.

    Change of Control Triggering Event has the meaning set forth under "--
Covenants--Change of Control Triggering Event" above.

    Common Stock of any Person means Capital Stock of such Person that does
not rank prior, as to the payment of dividends or as to the distribution of
assets upon any voluntary or involuntary liquidation, dissolution or winding
up of such Person, to shares of Capital Stock of any other class of such
Person.

    Consolidated Capital Ratio means as of the date of determination the ratio
of the aggregate amount of Debt of Level 3 and its Restricted Subsidiaries on
a consolidated basis as at the date of determination to the sum of:

  (1) $2.024 billion;

  (2) the aggregate net proceeds to Level 3 from the issuance or sale of any
      Capital Stock (including Preferred Stock) of Level 3 other than
      Disqualified Stock subsequent to the Measurement Date;

  (3) the aggregate net proceeds from the issuance or sale of Debt of Level
      3 or any Restricted Subsidiary subsequent to the Measurement Date
      convertible or exchangeable into Capital Stock of Level 3 other than
      Disqualified Stock, in each case upon conversion or exchange thereof
      into Capital Stock of Level 3 subsequent to the Measurement Date; and

  (4) the after-tax gain on the sale, subsequent to the Measurement Date, of
      Special Assets to the extent such Special Assets have been sold for
      cash, Cash Equivalents, Telecommunications/IS Assets or the assumption
      of Debt of Level 3 or any Restricted Subsidiary (other than Debt that
      is subordinated to the notes or any applicable Restricted Subsidiary
      Guarantee) and release of Level 3 and all Restricted Subsidiaries from
      all liability on the Debt assumed.

    However, for purposes of calculation of the Consolidated Capital Ratio,
the net proceeds from the issuance or sale of Capital Stock or Debt described
in clause (2) or (3) above shall not be included to the extent:

  (X) such proceeds have been utilized to make a Permitted Investment under
      clause (9) of the definition thereof or a Restricted Payment; or

  (Y) such Capital Stock or Debt shall have been issued or sold to Level 3,
      a Subsidiary of Level 3 or an employee stock ownership plan or trust
      established by Level 3 or any such Subsidiary for the benefit of their
      employees.

    Consolidated Cash Flow Available for Fixed Charges for any period means
the Consolidated Net Income of Level 3 and its Restricted Subsidiaries for
such period increased by the sum of (to the extent reducing Consolidated Net
Income for such period):

  (1)  Consolidated Interest Expense of Level 3 and its Restricted
       Subsidiaries for such period, plus

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<PAGE>

  (2)  Consolidated Income Tax Expense of Level 3 and its Restricted
       Subsidiaries for such period, plus

  (3)  consolidated depreciation and amortization expense and any other non-
       cash items (other than any such non-cash item to the extent that it
       represents an accrual of or reserve for cash expenditures in any
       future period);

however, there shall be excluded therefrom the Consolidated Cash Flow Available
for Fixed Charges (if positive) of any Restricted Subsidiary (calculated
separately for such Restricted Subsidiary in the same manner as provided above
for Level 3) that is subject to a restriction which prevents the payment of
dividends or the making of distributions to Level 3 or another Restricted
Subsidiary to the extent of such restrictions.

    Consolidated Income Tax Expense for any period means the aggregate amounts
of the provisions for income taxes of Level 3 and its Restricted Subsidiaries
for such period calculated on a consolidated basis in accordance with generally
accepted accounting principles.

    Consolidated Interest Expense for any period means the interest expense
included in a consolidated income statement (excluding interest income) of
Level 3 and its Restricted Subsidiaries for such period in accordance with
generally accepted accounting principles, including without limitation or
duplication (or, to the extent not so included, with the addition of):

  (1)  the amortization of Debt discounts and issuance costs, including
       commitment fees;

  (2)  any payments or fees with respect to letters of credit, bankers'
       acceptances or similar facilities;

  (3)  net costs with respect to interest rate swap or similar agreements or
       foreign currency hedge, exchange or similar agreements (including
       fees);

  (4)  Preferred Stock Dividends (other than dividends paid in shares of
       Preferred Stock that is not Disqualified Stock) declared and paid or
       payable;

  (5)  accrued Disqualified Stock Dividends, whether or not declared or
       paid;

  (6)  interest on Debt guaranteed by Level 3 and its Restricted
       Subsidiaries;

  (7)  the portion of any Capital Lease Obligation or Sale and Leaseback
       Transaction paid during such period that is allocable to interest
       expense;

  (8)  interest Incurred in connection with investments in discontinued
       operations; and

  (9)  the cash contributions to any employee stock ownership plan or
       similar trust to the extent such contributions are used by such plan
       or trust to pay interest or fees to any Person (other than Level 3 or
       a Restricted Subsidiary) in connection with Debt Incurred by such
       plan or trust.

    Consolidated Net Income for any period means the net income (or loss) of
Level 3 and its Restricted Subsidiaries for such period determined on a
consolidated basis in accordance with generally accepted accounting principles;
provided that there shall be excluded therefrom:

  (1)  for purposes of the covenant described under "--Covenants--Limitation
       on Restricted Payments" only, the net income (or loss) of any Person
       acquired by Level 3 or a Restricted Subsidiary in a pooling-of-
       interests transaction for any period prior to the date of such
       transaction;

  (2)  the net income (or loss) of any Person that is not a Restricted
       Subsidiary except to the extent of the amount of dividends or other
       distributions actually paid to Level 3 or a Restricted Subsidiary by
       such Person during such period (except, for purposes of the covenant
       described under "--Covenants--Limitation on Restricted Payments"
       only, to the extent such dividends or distributions have been
       subtracted from the calculation of the amount of Investments to
       support the actual making of Investments);


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<PAGE>

  (3)  gains or losses realized upon the sale or other disposition of any
       Property of Level 3 or its Restricted Subsidiaries that is not sold
       or disposed of in the ordinary course of business (it being
       understood that Permitted Telecommunications Capital Asset
       Dispositions shall be considered to be in the ordinary course of
       business);

  (4)  gains or losses realized upon the sale or other disposition of any
       Special Assets;

  (5)  all extraordinary gains and extraordinary losses, determined in
       accordance with generally accepted accounting principles;

  (6)  the cumulative effect of changes in accounting principles;

  (7)  non-cash gains or losses resulting from fluctuations in currency
       exchange rates;

  (8)  any non-cash expense related to the issuance to employees or
       directors of Level 3 or any Restricted Subsidiary of:

     (A) options to purchase Capital Stock of Level 3 or such Restricted
         Subsidiary; or

     (B) other compensatory rights;

     provided, in either case, that such options or rights, by their terms
     can be redeemed at the option of the holder of such option or right
     only for Capital Stock; and

  (9)  with respect to a Restricted Subsidiary that is not a Wholly Owned
       Subsidiary any aggregate net income (or loss) in excess of Level 3's
       or any Restricted Subsidiary's pro rata share of the net income (or
       loss) of such Restricted Subsidiary that is not a Wholly Owned
       Subsidiary; provided further that there shall further be excluded
       therefrom the net income (but not net loss) of any Restricted
       Subsidiary that is subject to a restriction which prevents the
       payment of dividends or the making of distributions to Level 3 or
       another Restricted Subsidiary to the extent of such restriction.

    Consolidated Net Worth of any Person means the stockholders' equity of such
Person, determined on a consolidated basis in accordance with generally
accepted accounting principles, less amounts attributable to Disqualified Stock
of such Person.

    Consolidated Tangible Assets of any Person means the total amount of assets
(less applicable reserves and other properly deductible items) which under
generally accepted accounting principles would be included on a consolidated
balance sheet of such Person and its Subsidiaries after deducting therefrom all
goodwill, trade names, trademarks, patents, unamortized debt discount and
expense and other like intangibles, which in each case under generally accepted
accounting principles would be included on such consolidated balance sheet.

    Credit Agreement means the Credit Agreement dated as of September 30, 1999,
among Level 3, certain subsidiaries of Level 3, the lenders parties thereto and
The Chase Manhattan Bank, as Administrative Agent and Collateral Agent.

    Credit Facilities means one or more credit agreements, loan agreements or
similar facilities, secured or unsecured, providing for revolving credit loans,
term loans and/or letters of credit, including the Credit Agreement and any
Qualified Receivable Facility, entered into from time to time by Level 3 and
its Restricted Subsidiaries, and including any related notes, Guarantees,
collateral documents, instruments and agreements executed in connection
therewith, as the same may be amended, supplemented, modified, restated or
replaced from time to time.

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<PAGE>

    Debt means (without duplication), with respect to any Person, whether
recourse is to all or a portion of the assets of such Person and whether or not
contingent:

  (1)  every obligation of such Person for money borrowed;

  (2)  every obligation of such Person evidenced by bonds, debentures, notes
       or other similar instruments, including obligations incurred in
       connection with the acquisition of Property;

  (3)  every reimbursement obligation of such Person with respect to letters
       of credit, bankers' acceptances or similar facilities issued for the
       account of such Person;

  (4)  every obligation of such Person issued or assumed as the deferred
       purchase price of Property or services (including securities
       repurchase agreements but excluding trade accounts payable or accrued
       liabilities arising in the ordinary course of business);

  (5)  every Capital Lease Obligation of such Person and all Attributable
       Value in respect of Sale and Leaseback Transactions entered into by
       such Person;

  (6)  all obligations to redeem or repurchase Disqualified Stock issued by
       such Person;

  (7)  the liquidation preference of any Preferred Stock (other than
       Disqualified Stock, which is covered by the preceding clause (6))
       issued by any Restricted Subsidiary of such Person;

  (8)  every obligation under Interest Rate or Currency Protection
       Agreements of such Person; and

  (9)  every obligation of the type referred to in clauses (1) through (8)
       of another Person and all dividends of another Person the payment of
       which, in either case, such Person has Guaranteed.

The "amount" or "principal amount" of Debt at any time of determination as used
herein represented by:

  (A) any Debt issued at a price that is less than the principal amount at
      maturity thereof, shall be, except as otherwise set forth herein, the
      Accreted Value of such Debt at such time, or

  (B) in the case of any Receivables sale constituting Debt, the amount of
      the unrecovered purchase price (that is, the amount paid for
      Receivables that has not been actually recovered from the collection
      of such Receivables) paid by the purchaser (other than Level 3 or a
      Wholly Owned Restricted Subsidiary of Level 3) thereof.

The amount of Debt represented by an obligation under an Interest Rate or
Currency Protection Agreement shall be equal to:

     (X) zero if such obligation has been Incurred pursuant to clause (10)
         of paragraph (b) of the covenant described under "--Covenants--
         Limitation on Consolidated Debt," or

     (Y) the notional amount of such obligation if not Incurred pursuant to
         such clause.

    Default means any event, act or condition the occurrence of which is, or
after notice or the passage of time or both would be, an Event of Default.

    Disqualified Stock of any Person means any Capital Stock of such Person
which, by its terms (or by the terms of any security into which it is
convertible or for which it is exchangeable), or upon the happening of any
event, matures or is mandatorily redeemable, pursuant to a sinking fund
obligation or otherwise, or is redeemable at the option of the holder thereof,
in whole or in part, on or prior to the final Stated Maturity of the notes;
provided, however, that any Preferred Stock which would not constitute
Disqualified Stock but for provisions thereof giving holders thereof the right
to require Level 3 to repurchase or redeem such Preferred Stock upon the
occurrence of a change of control occurring prior to the final Stated Maturity
of the notes shall not constitute Disqualified Stock if the change of control
provisions applicable to such Preferred Stock are no more favorable to the
holders of such Preferred Stock than the provisions applicable to the notes
contained in the covenant described under "--Covenants--Change of Control
Triggering Event" and such Preferred Stock

                                       64
<PAGE>

specifically provides that Level 3 will not repurchase or redeem any such stock
pursuant to such provisions prior to Level 3's repurchase of such notes as are
required to be repurchased pursuant to the covenant described under "--
Covenants--Change of Control Triggering Event."

    Disqualified Stock Dividends means all dividends with respect to
Disqualified Stock of Level 3 held by Persons other than a Wholly Owned
Restricted Subsidiary. The amount of any such dividend shall be equal to the
quotient of such dividend divided by the difference between one and the maximum
statutory federal income tax rate (expressed as a decimal number between 1 and
0) applicable to Level 3 for the period during which such dividends were paid.

    Eligible Receivables means, at any time, Receivables of Level 3 and its
Restricted Subsidiaries, as evidenced on the most recent quarterly consolidated
balance sheet of Level 3 as at a date at least 45 days prior to such time,
arising in the ordinary course of business of Level 3 or any Restricted
Subsidiary.

    Euro Notes means, collectively, Level 3's 10 3/4% Senior Notes due 2008 in
an aggregate principal amount not to exceed (Euro)500,000,000 and Level 3's 11
1/4% Senior Notes due 2010 in an aggregate principal amount not to exceed
(Euro)300,000,000.

    European Economic Area means the member nations of the European Economic
Area pursuant to the Oporto Agreement on the European Economic Area dated May
2, 1992, as amended.

    European Government Obligation means direct non-callable obligations of, or
non-callable obligations permitted by, any member nation of the European Union,
the payment or guarantee of which is secured by the pledge of the full faith
and credit of the respective nation, provided that such nation has a credit
rating at least equal to that of the highest rated member nation of the
European Economic Area.

    European Union means the member nations to the third stage of economic and
monetary union pursuant to the Treaty of Rome establishing the European
Community, as amended by the Treaty on European Union, signed at Maastricht on
February 7, 1992.

    Event of Default has the meaning set forth under "--Events of Default"
below.

    Exchange Act means the Securities Exchange Act of 1934, as amended (or any
successor act), and the rules and regulations thereunder (or respective
successors thereto).

    Existing Notes means the 9 1/8% Senior Notes, the 10 1/2% Senior Discount
Notes and the 6% Convertible Notes.

    Fair Market Value means, with respect to any Property, the price that could
be negotiated in an arm's-length free market transaction, for cash, between a
willing seller and a willing buyer, neither of whom is under pressure or
compulsion to complete the transaction. Unless otherwise specified in the
indentures, Fair Market Value shall be determined by the board of directors of
Level 3 acting in good faith and shall be evidenced by a resolution of the
board of directors of Level 3 delivered to the trustee.

    Government Securities means direct obligations of, or obligations fully and
unconditionally guaranteed or insured by, the United States or any agency or
instrumentality thereof for the payment of which obligations or guarantee the
full faith and credit of the United States is pledged and which are not
callable or redeemable at the issuer's option (unless, for purposes of the
definition of "Cash Equivalents" only, the obligations are redeemable or
callable at a price not less than the purchase price paid by Level 3 or the
applicable Restricted Subsidiary, together with all accrued and unpaid interest
(if any) on such Government Securities).

    Guarantee by any Person means any obligation, direct or indirect,
contingent or otherwise, of such Person guaranteeing, or having the economic
effect of guaranteeing, any Debt of any other Person (the "primary obligor") in
any manner, whether directly or indirectly, and any obligation, direct or
indirect, contingent or otherwise, of such Person:

  (1) to purchase or pay (or advance or supply funds for the purchase or
      payment of) such Debt or to purchase (or to advance or supply funds
      for the purchase of) any security for the payment of such

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<PAGE>

      Debt, including any such obligations arising by virtue of partnership
      arrangements or by agreements to keep-well;

  (2) to purchase Property or services or to take-or-pay for the purpose of
      assuring the holder of such Debt of the payment of such Debt;

  (3) to maintain working capital, equity capital or other financial
      statement condition or liquidity of the primary obligor so as to
      enable the primary obligor to pay such Debt; or

  (4) entered into for the purpose of assuring in any other manner the
      obligee against loss in respect thereof, in whole or in part

(and Guaranteed, Guaranteeing and Guarantor shall have meanings correlative to
the foregoing); provided, however, that the Guarantee by any Person shall not
include endorsements by such Person for collection or deposit, in either case,
in the ordinary course of business.

    Guarantor means a Restricted Subsidiary of Level 3 that has executed a
Restricted Subsidiary Guarantee.

    Incur means, with respect to any Debt or other obligation of any Person,
to create, issue, incur (by conversion, exchange or otherwise), assume,
Guarantee or otherwise become liable in respect of such Debt or other
obligation including the recording, as required pursuant to generally accepted
accounting principles or otherwise, of any such Debt or other obligation on
the balance sheet of such Person (and Incurrence, Incurred, Incurrable and
Incurring shall have meanings correlative to the foregoing); provided,
however, that a change in generally accepted accounting principles that
results in an obligation of such Person that exists at such time becoming Debt
shall not be deemed an Incurrence of such Debt and that neither the accrual of
interest nor the accretion of original issue discount shall be deemed an
Incurrence of Debt. Debt otherwise incurred by a Person before it becomes a
Subsidiary of Level 3 shall be deemed to have been Incurred at the time at
which it becomes a Subsidiary.

    Interest Rate or Currency Protection Agreement of any Person means any
forward contract, futures contract, swap, option or other financial agreement
or arrangement (including caps, floors, collars and similar agreements)
relating to, or the value of which is dependent upon, interest rates or
currency exchange rates or indices.

    Invested Capital means the sum of:

  (1) $500 million;

  (2) the aggregate net proceeds received by Level 3 from the issuance or
      sale of any Capital Stock, including Preferred Stock, of Level 3 but
      excluding Disqualified Stock, subsequent to the Measurement Date; and

  (3) the aggregate net proceeds from the issuance or sale of Debt of Level
      3 or any Restricted Subsidiary subsequent to the Measurement Date
      convertible or exchangeable into Capital Stock of Level 3 other than
      Disqualified Stock, in each case upon conversion or exchange thereof
      into Capital Stock of Level 3 subsequent to the Measurement Date.

    However, the net proceeds from the issuance or sale of Capital Stock or
Debt described in clause (2) or (3) shall be excluded from any computation of
Invested Capital to the extent:

  (A) utilized to make a Restricted Payment; or

  (B) such Capital Stock or Debt shall have been issued or sold to Level 3,
      a Subsidiary of Level 3 or an employee stock ownership plan or trust
      established by Level 3 or any such Subsidiary for the benefit of their
      employees.

    Investment by any Person means any direct or indirect loan, advance or
other extension of credit or capital contribution (by means of transfers of
cash or other Property to others or payments for Property or

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<PAGE>

services for the account or use of others, or otherwise) to, purchase,
redemption, retirement or acquisition of Capital Stock, bonds, notes,
debentures or other securities or evidence of Debt issued by, or Incurrence of,
or payment on, a Guarantee of any obligation of, any other Person; provided
that Investments shall exclude commercially reasonable extensions of trade
credit.

The amount, as of any date of determination, of any Investment shall be:

  (1) the original cost of such Investment, plus

  (2) the cost of all additions, as of such date, thereto, and minus

  (3) the amount, as of such date, of any portion of such Investment repaid
      to such Person in cash as a repayment of principal or a return of
      capital, as the case may be (except to the extent such repaid amount
      has been included in Consolidated Net Income to support the actual
      making of Restricted Payments),

but without any other adjustments for increases or decreases in value, or
write-ups, write-downs or write-offs with respect to such Investment. In
determining the amount of any Investment involving a transfer of any Property
other than cash, such Property shall be valued at its Fair Market Value at the
time of such transfer.

    Issue Date means the date on which the notes are initially issued.

    Issue Date Purchase Money Debt means Purchase Money Debt outstanding on the
Issue Date; provided, that the amount of such Purchase Money Debt when Incurred
did not exceed 100% of the cost of the construction, installation, acquisition,
lease, development or improvement of the applicable Telecommunications/IS
Assets.

    Issue Date Rating means the respective ratings assigned to the notes by the
Rating Agencies on the Issue Date.

    Joint Venture means a Person in which Level 3 or a Restricted Subsidiary
holds not more than 50% of the shares of Voting Stock.

    Lien means, with respect to any Property, any mortgage or deed of trust,
pledge, hypothecation, assignment, deposit arrangement, security interest,
lien, charge, easement (other than any easement not materially impairing
usefulness), encumbrance, preference, priority or other security agreement or
preferential arrangement of any kind or nature whatsoever on or with respect to
such Property (including any Capital Lease Obligation, conditional sale or
other title retention agreement having substantially the same economic effect
as any of the foregoing and any Sale and Leaseback Transaction). For purposes
of this definition the sale, lease, conveyance or other transfer by Level 3 or
any of its Subsidiaries of, including the grant of indefeasible rights of use
or equivalent arrangements with respect to, dark or lit communications fiber
capacity or communications conduit shall not constitute a Lien.

    Measurement Date means April 28, 1998, the date the 9 1/8% Senior Notes
were originally issued.

    Moody's means Moody's Investors Service, Inc. or, if Moody's Investors
Service, Inc. shall cease rating debt securities having a maturity at original
issuance of at least one year and such ratings business shall have been
transferred to a successor Person, such successor Person; provided, however,
that if Moody's Investors Service, Inc. ceases rating debt securities having a
maturity at original issuance of at least one year and its ratings business
with respect thereto shall not have been transferred to any successor Person,
then Moody's shall mean any other national recognized rating agency (other than
S&P) that rates debt securities having a maturity at original issuance of at
least one year and that shall have been designated by the trustee by a written
notice given to Level 3.

    Net Available Proceeds from any Asset Disposition by any Person means cash
or cash equivalents received (including amounts received by way of sale or
discounting of any note, installment receivable or other

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<PAGE>

receivable, but excluding any other consideration received in the form of
assumption by the acquiror of Debt or other obligations relating to such
Property) therefrom by such Person, net of:

  (1) all legal, title and recording taxes, expenses and commissions and
      other fees and expenses (including appraisals, brokerage commissions
      and investment banking fees) Incurred and all federal, state,
      provincial, foreign and local taxes required to be accrued as a
      liability as a consequence of such Asset Disposition;

  (2) all payments made by such Person or its Subsidiaries on any Debt which
      is secured by such Property in accordance with the terms of any Lien
      upon or with respect to such Property or which must by the terms of
      such Lien, or in order to obtain a necessary consent to such Asset
      Disposition or by applicable law, be repaid out of the proceeds from
      such Asset Disposition;

  (3) all distributions and other payments required to be made to minority
      interest holders in Subsidiaries or Joint Ventures of such Person as a
      result of such Asset Disposition; and

  (4) appropriate amounts to be provided by such Person or any Subsidiary
      thereof, as the case may be, as a reserve in accordance with generally
      accepted accounting principles against any liabilities associated with
      such Property and retained by such Person or any Subsidiary thereof,
      as the case may be, after such Asset Disposition, including
      liabilities under any indemnification obligations and severance and
      other employee termination costs associated with such Asset
      Disposition, in each case as determined by the board of directors of
      such Person, in its reasonable good faith judgment evidenced by a
      resolution of the board of directors filed with the trustee;

     (1) provided, however, that any reduction in such reserve within
         twelve months following the consummation of such Asset Disposition
         will be, for all purposes of the indentures and the notes, treated
         as a new Asset Disposition at the time of such reduction with Net
         Available Proceeds equal to the amount of such reduction; and

     (2) provided further, however, that, in the event that any
         consideration for a transaction (which would otherwise constitute
         Net Available Proceeds) is required to be held in escrow pending
         determination of whether a purchase price adjustment will be made,
         at such time as such portion of the consideration is released to
         such Person or its Restricted Subsidiary from escrow, such portion
         shall be treated for all purposes of the indentures and the Notes
         as a new Asset Disposition at the time of such release from escrow
         with Net Available Proceeds equal to the amount of such portion of
         consideration released from escrow.

    New Convertible Notes means Level 3's 6% Convertible Subordinated Notes due
2010 in an aggregate principal amount not to exceed $862,500,000, originally
issued on February 29, 2000.

    9 1/8% Senior Notes means Level 3's 9 1/8% Senior Notes Due 2008 in an
aggregate principal amount not to exceed $2,000,000,000, originally issued on
April 28, 1998.

    Offer to Purchase means a written offer (the Offer) sent by Level 3 by
first-class mail, postage prepaid, to each holder of notes at its address
appearing in the Note Register on the date of the Offer offering to purchase up
to the principal amount, in the case of each of the 2008 senior notes and the
2010 senior notes, and the principal amount at maturity, in the case of the
2010 senior discount notes, specified in such Offer at the purchase price
specified in such Offer (as determined pursuant to the indentures). Unless
otherwise required by applicable law, the Offer shall specify an expiration
date (the Expiration Date) of the Offer to Purchase which shall be, subject to
any contrary requirements of applicable law, not less than 30 days or more than
60 days after the date of such Offer and a settlement date (the Purchase Date)
for purchase of notes within five Business Days after the Expiration Date.
Level 3 shall notify the trustee at least 15 Business Days (or such shorter
period as is acceptable to the trustee) prior to the mailing of the Offer of
Level 3's obligation to make an Offer to Purchase, and the Offer shall be
mailed by Level 3 or, at Level 3's request, by the trustee in the name and at
the expense of Level 3.


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<PAGE>

    The Offer shall contain information concerning the business of Level 3 and
its Subsidiaries which Level 3 in good faith believes will enable such holders
to make an informed decision with respect to the Offer to Purchase, which at a
minimum will include:

  (1) the most recent annual and quarterly financial statements and
      "Management's Discussion and Analysis of Financial Condition and
      Results of Operations" contained in the documents required to be filed
      with the trustee pursuant to the indentures (which requirements may be
      satisfied by delivery of such documents together with the Offer);

  (2) a description of material developments in Level 3's business
      subsequent to the date of the latest of such financial statements
      referred to in clause (1) (including a description of the events
      requiring Level 3 to make the Offer to Purchase);

  (3) if applicable, appropriate pro forma financial information concerning
      the Offer to Purchase and the events requiring Level 3 to make the
      Offer to Purchase; and

  (4) any other information required by applicable law to be included
      therein.

    The Offer shall contain all instructions and materials necessary to enable
such holders to tender notes pursuant to the Offer to Purchase. The Offer shall
also state:

  (1) the section of the indentures pursuant to which the Offer to Purchase
      is being made;

  (2) the Expiration Date and the Purchase Date;

  (3) the aggregate principal amount, in the case of the outstanding 2008
      senior notes and 2010 senior notes, and the aggregate principal amount
      at maturity, in the case of the outstanding 2010 senior discount
      notes, offered to be purchased by Level 3 pursuant to the Offer to
      Purchase (including, if less than 100%, the manner by which such has
      been determined pursuant to the section of the indentures requiring
      the Offer to Purchase) (the Purchase Amount);

  (4)  the purchase price to be paid by Level 3 for $1,000 aggregate
       principal amount or aggregate principal amount at maturity, as
       applicable, of notes accepted for payment (as specified pursuant to
       the indentures) (the Purchase Price);

  (5)  that the holder may tender all or any portion of the notes registered
       in the name of such holder and that any portion of a note tendered
       must be tendered in an integral multiple of $1,000 principal amount
       or principal amount at maturity, as applicable;

  (6)  the place or places where notes are to be surrendered for tender
       pursuant to the Offer to Purchase;

  (7)  that any notes not tendered or tendered but not purchased by Level 3
       will continue to accrue interest or, in the case of the 2010 senior
       discount notes, accrete principal, if applicable;

  (8)  that on the Purchase Date the Purchase Price will become due and
       payable upon each note being accepted for payment pursuant to the
       Offer to Purchase and that interest thereon, if any, shall cease to
       accrue on, or, in the case of the 2010 senior discount notes,
       principal thereon shall cease to accrete, if applicable, and after
       the Purchase Date;

  (9)  that each holder electing to tender a note pursuant to the Offer to
       Purchase will be required to surrender such note at the place or
       places specified in the Offer prior to the close of business on the
       Expiration Date (such note being, if Level 3 or the trustee so
       requires, duly endorsed by, or accompanied by a written instrument of
       transfer in form satisfactory to Level 3 and the trustee duly
       executed by, the holder thereof or his attorney duly authorized in
       writing);

  (10)  that holders will be entitled to withdraw all or any portion of
        notes tendered if Level 3 (or the Paying Agent) receives, not later
        than the close of business on the Expiration Date, a telegram,
        telex, facsimile transmission or letter setting forth the name of
        the holder, the principal amount, in the case of each of the 2008
        senior notes and 2010 senior notes and the principal amount at
        maturity, in the case of the 2010 senior discount notes, of the note
        the holder tendered, the

                                       69
<PAGE>

      certificate number of the note the holder tendered and a statement
      that such holder is withdrawing all or a portion of his tender;

  (11)  that:

      (A) if notes in an aggregate principal amount, in the case of each of
          the 2008 senior notes and the 2010 senior notes, or the aggregate
          principal amount at maturity, in the case of the 2010 senior
          discount notes, less than or equal to the Purchase Amount are duly
          tendered and not withdrawn pursuant to the Offer to Purchase,
          Level 3 shall purchase all such notes; and

      (B) if notes in an aggregate principal amount, in the case of each of
          the 2008 senior notes and the 2010 senior notes, or the aggregate
          principal amount at maturity, in the case of the 2010 senior
          discount notes, in excess of the Purchase Amount are tendered and
          not withdrawn pursuant to the Offer to Purchase, Level 3 shall
          purchase notes having an aggregate principal amount equal to the
          Purchase Amount on a pro rata basis (with such adjustments as may
          be deemed appropriate so that only notes in denominations of
          $1,000 principal amount, or, in the case of the 2010 senior
          discount notes, aggregate principal amount at maturity, or
          integral multiples thereof shall be purchased); and

  (12)  that in the case of any holder whose note is purchased only in part,
        Level 3 shall execute, and the trustee shall authenticate and
        deliver to the holder of such note without service charge, a new
        note or notes, of any authorized denomination as requested by such
        holder, in an aggregate principal amount, in the case of each of the
        2008 senior notes and the 2010 senior notes, or the aggregate
        principal amount at maturity, in the case of the 2010 senior
        discount notes, equal to and in exchange for the unpurchased portion
        of the note so tendered.

    Any Offer to Purchase shall be governed by and effected in accordance with
the Offer for such Offer to Purchase.

    Officers' Certificate means a certificate signed by the Chairman of the
board of directors of Level 3, a Vice Chairman of the board of directors of
Level 3, the President or a Vice President, and by the Chief Financial
Officer, the Chief Accounting Officer, the Treasurer, an Assistant Treasurer,
the Controller, the Secretary or an Assistant Secretary of Level 3 and
delivered to the trustee, which shall comply with the indentures.

    Opinion of Counsel means an opinion of counsel acceptable to the trustee
(who may be counsel to Level 3, including an employee of Level 3).

    OECD shall mean the Organization for Economic Cooperation and Development.

    Permitted Holders means the members of Level 3's Board of Directors on the
Measurement Date and their respective estates, spouses, ancestors, and lineal
descendants, the legal representatives of any of the foregoing and the
trustees of any bona fide trusts of which the foregoing are the sole
beneficiaries or the grantors, or any Person of which the foregoing
"beneficially owns" (as defined in Rule 13d-3 under the Exchange Act) at least
66 2/3% of the total voting power of the Voting Stock of such Person.

    Permitted Interest Rate or Currency Protection Agreement of any Person
means any Interest Rate or Currency Protection Agreement entered into with one
or more financial institutions in the ordinary course of business that is
designed to protect such Person against fluctuations in interest rates or
currency exchange rates with respect to Debt Incurred and not for purposes of
speculation and which, in the case of an interest rate agreement, shall have a
notional amount no greater than the principal amount at maturity due with
respect to the Debt being hedged thereby.

    Permitted Investments means:

  (1) Cash Equivalents;

  (2) investments in prepaid expenses;

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  (3)   negotiable instruments held for collection and lease, utility and
        workers' compensation, performance and other similar deposits;

  (4)   loans, advances or extensions of credit to employees and directors
        made in the ordinary course of business and consistent with past
        practice;

  (5)   obligations under Permitted Interest Rate or Currency Protection
        Agreements;

  (6)   bonds, notes, debentures and other securities received as a result of
        Asset Dispositions pursuant to and in compliance with "--Covenants--
        Limitation on Asset Dispositions;"

  (7)   Investments in any Person as a result of which such Person becomes a
        Restricted Subsidiary;

  (8)   Investments made prior to the Measurement Date;

  (9)   Investments made after the Measurement Date in Persons engaged in the
        Telecommunications/IS Business in an aggregate amount not to exceed
        Invested Capital;

  (10)  solely in connection with the defeasance of euro-denominated Debt
        permitted under the indentures, European Government Obligations; and

  (11)  additional Investments in an aggregate amount not to exceed $200
        million.

    Permitted Liens means:

  (1)   Liens for taxes, assessments, governmental charges, levies or claims
        which are not yet delinquent or which are being contested in good
        faith by appropriate proceedings, if a reserve or other appropriate
        provision, if any, as shall be required in conformity with generally
        accepted accounting principles shall have been made therefor;

  (2)   other Liens incidental to the conduct of Level 3's and its Restricted
        Subsidiaries' businesses or the ownership of its Property not
        securing any Debt, and which do not in the aggregate materially
        detract from the value of Level 3's and its Restricted Subsidiaries'
        Property when taken as a whole, or materially impair the use thereof
        in the operation of its business;

  (3)   Liens, pledges and deposits made in the ordinary course of business
        in connection with workers' compensation, unemployment insurance and
        other types of statutory obligations;

  (4)   Liens, pledges or deposits made to secure the performance of tenders,
        bids, leases, public or statutory obligations, sureties, stays,
        appeals, indemnities, performance or other similar bonds and other
        obligations of like nature incurred in the ordinary course of
        business (exclusive of obligations for the payment of borrowed money,
        the obtaining of advances or credit or the payment of the deferred
        purchase price of Property and which do not in the aggregate
        materially impair the use of Property in the operation of the
        business of Level 3 and the Restricted Subsidiaries taken as a
        whole);

  (5)   zoning restrictions, servitudes, easements, rights-of-way,
        restrictions and other similar charges or encumbrances incurred in
        the ordinary course of business which, in the aggregate, do not
        materially detract from the value of the Property subject thereto or
        materially interfere with the ordinary conduct of the business of
        Level 3 or its Restricted Subsidiaries; and

  (6)   any interest or title of a lessor in the Property subject to any
        lease other than a Capital Lease.

    Permitted Telecommunications Capital Asset Disposition means the transfer,
conveyance, sale, lease or other disposition of optical fiber and/or conduit
and any related equipment used in a Segment (as defined) of Level 3's
communications network that:

  (1)   constitute capital assets in accordance with generally accepted
        accounting principles; and

  (2)   after giving effect to such disposition, would result in Level 3
        retaining at least either:

     (A)   24 optical fibers per route mile on such Segment as deployed at
           the time of such disposition; or


                                       71
<PAGE>

     (B)   12 optical fibers and one empty conduit per route mile on such
           Segment as deployed at such time.

Segment means:

  (X)  with respect to Level 3's intercity network, the through-portion of
       such network between two local networks (e.g., Omaha to Denver); and

  (Y)  with respect to a local network of Level 3 (e.g., Dallas), the entire
       through-portion of such network, excluding the spurs which branch off
       the through-portion.

    Person means any individual, corporation, company, partnership, joint
venture, limited liability company, association, joint stock company, trust,
unincorporated organization, government or agency or political subdivision
thereof or any other entity.

    Preferred Stock of any Person means Capital Stock of such Person of any
class or classes (however designated) that ranks prior, as to the payment of
dividends or as to the distribution of assets upon any voluntary or involuntary
liquidation, dissolution or winding-up of such Person, to shares of Capital
Stock of any other class of such Person.

    Preferred Stock Dividends means all dividends with respect to Preferred
Stock of Restricted Subsidiaries held by Persons other than Level 3 or a Wholly
Owned Restricted Subsidiary. The amount of any such dividend shall be equal to
the quotient of such dividend divided by the difference between one and the
maximum statutory federal income rate (expressed as a decimal number between 1
and 0) applicable to the issuer of such Preferred Stock for the period during
which such dividends were paid.

    Property means, with respect to any Person, any interest of such Person in
any kind of property or asset, whether real, personal or mixed, or tangible or
intangible, including Capital Stock in, and other securities of, any other
Person. For purposes of any calculation required pursuant to the indentures,
the value of any Property shall be its Fair Market Value.

    Proportionate Interest in any issuance of Capital Stock of a Restricted
Subsidiary means a ratio:

  (1)   the numerator of which is the aggregate amount of Capital Stock of
        such Restricted Subsidiary beneficially owned by Level 3 and the
        Restricted Subsidiaries; and

  (2)   the denominator of which is the aggregate amount of Capital Stock of
        such Restricted Subsidiary beneficially owned by all Persons
        (excluding, in the case of this clause (2), any Investment made in
        connection with such issuance).

    Purchase Money Debt means Debt (including Acquired Debt and Capital Lease
Obligations, mortgage financings and purchase money obligations) incurred for
the purpose of financing all or any part of the cost of construction,
installation, acquisition, lease, development or improvement by Level 3 or any
Restricted Subsidiary of any Telecommunications/IS Assets of Level 3 or any
Restricted Subsidiary and including any related notes, Guarantees, collateral
documents, instruments and agreements executed in connection therewith, as the
same may be amended, supplemented, modified or restated from time to time.

    Qualified Receivable Facility means Debt of Level 3 or any Subsidiary
Incurred from time to time pursuant to either:

  (1)   credit facilities secured by Receivables; or


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  (2)   Receivables purchase facilities, and including any related notes,
        Guarantees, collateral documents, instruments and agreements
        executed in connection therewith, as the same may be amended,
        supplemented, modified or restated from time to time.

    Rating Agencies means Moody's and S&P.

    Rating Date means the earlier of the date of public notice of the
occurrence of a Change of Control or of the intention of Level 3 to effect a
Change of Control.

    Rating Decline shall be deemed to have occurred if, no later than 90 days
after the Rating Date (which period shall be extended so long as the rating of
the notes is under publicly announced consideration for possible downgrade by
any of the Rating Agencies), either of the Rating Agencies assigns or reaffirms
a rating to the notes that is lower than the applicable Issue Date Rating (or
the equivalent thereof). If, prior to the Rating Date, either of the ratings
assigned to the notes by the Rating Agencies is lower than the applicable Issue
Date Rating, then a Rating Decline will be deemed to have occurred if such
rating is not changed by the 90th day following the Rating Date. A downgrade
within rating categories, as well as between rating categories, will be
considered a Rating Decline.

    Receivables means receivables, chattel paper, instruments, documents or
intangibles evidencing or relating to the right to payment of money and
proceeds and products thereof in each case generated in the ordinary course of
business.

    Restricted Subsidiary means:

  (1)   a Subsidiary of Level 3 or of a Restricted Subsidiary that has not
        been designated or classified as an Unrestricted Subsidiary pursuant
        to and in compliance with "--Covenants--Limitation on Designations
        of Unrestricted Subsidiaries;" and

  (2)   an Unrestricted Subsidiary that is redesignated as a Restricted
        Subsidiary pursuant to such covenant.

    Restricted Subsidiary Guarantee means a supplemental indenture to any
indenture in form satisfactory to the trustee, providing for an unconditional
Guarantee of payment in full of the principal or Accreted Value, as applicable,
of, premium, if any, and interest on the notes under such indenture. Any such
Restricted Subsidiary Guarantee shall not be subordinate to any Debt of the
Restricted Subsidiary providing the Restricted Subsidiary Guarantee.

    S&P means Standard & Poor's Ratings Service or, if Standard & Poor's
Ratings Service shall cease rating debt securities having a maturity at
original issuance of at least one year and such ratings business shall have
been transferred to a successor Person, such successor Person; provided,
however, that if Standard & Poor's Rating Service ceases rating debt securities
having a maturity at original issuance of at least one year and its ratings
business with respect thereto shall not have been transferred to any successor
Person, then S&P shall mean any other national recognized rating agency (other
than Moody's) that rates debt securities having a maturity at original issuance
of at least one year and that shall have been designated by the trustee by a
written notice given to Level 3.

    Sale and Leaseback Transaction of any Person means any direct or indirect
arrangement pursuant to which any Property is sold or transferred by such
Person or a Restricted Subsidiary of such person and is thereafter leased back
from the purchaser or transferee thereof by such Person or one of its
Restricted Subsidiaries. The stated maturity of such arrangement shall be the
date of the last payment of rent or any other amount due under such arrangement
prior to the first date on which such arrangement may be terminated by the
lessee without payment of a penalty.

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    Significant Subsidiary means any Subsidiary that would be a Significant
Subsidiary of Level 3 within the meaning of Rule 1-02 under Regulation S-X
promulgated by the SEC.

    Special Assets means:

  (1)  the Capital Stock or assets of Cable Michigan, Inc., RCN Corporation,
       Commonwealth Telephone Enterprises, Inc., KCP, Inc. and California
       Private Transportation Company, L.P. (and any intermediate holding
       companies or other entities formed solely for the purpose of owning
       such Capital Stock or assets) owned, directly or indirectly, by Level
       3 or any Restricted Subsidiary on the Measurement Date; and

  (2)  any Property, other than cash, Cash Equivalents and
       Telecommunications/IS Assets, received as consideration for the
       disposition after the Measurement Date of Special Assets (as
       contemplated by the first proviso under "--Covenants-- Limitation on
       Asset Dispositions").

    6% Convertible Notes means Level 3's 6% Convertible Subordinated Notes due
2009 in an aggregate principal amount not to exceed $823,000,000, originally
issued on September 14, 1999.

    Stated Maturity when used with respect to a note or any installment of
interest thereon, means the date specified in such note as the fixed date on
which the principal or Accreted Value, as applicable, of such note or such
installment of interest is due and payable, including pursuant to any mandatory
redemption provision (but excluding any provision providing for the repurchase
of such note at the option of the holder thereof upon the happening of any
contingency beyond the control of Level 3 unless such contingency has
occurred).

    Subordinated Debt means Debt of Level 3 that is not secured by any Lien on
or with respect to any Property now owned or acquired after the Measurement
Date and as to which the payment of principal of (and premium, if any) and
interest and other payment obligations in respect of such Debt shall be
subordinate to the prior payment in full in cash of the notes to at least the
following extent:

  (1) no payments of principal of (or premium, if any) or interest on or
      otherwise due (including by acceleration or for additional amounts) in
      respect of, or repurchases, redemptions or other retirements of, such
      Debt (collectively referred to as payments of such Debt) may be
      permitted for so long as any default (after giving effect to any
      applicable grace periods) in the payment of principal (or premium, if
      any) or interest on the notes exists, including as a result of
      acceleration;

  (2) in the event that any other Default exists with respect to the notes,
      upon notice by holders of 25% or more in aggregate principal amount of
      the notes to the trustee, the trustee shall have the right to give
      notice to Level 3 and the holders of such Debt (or trustees or agents
      therefor) of a payment blockage, and thereafter no payments of such
      Debt may be made for a period of 179 days from the date of such
      notice, provided that not more than one such payment blockage notice
      may be given in any consecutive 360-day period, irrespective of the
      number of defaults with respect to the notes during such period;

  (3) if payment of such Debt is accelerated when any notes are outstanding,
      no payments of such Debt may be made until three Business Days after
      the trustee receives notice of such acceleration and, thereafter, such
      payments may only be made to the extent the terms of such Debt permit
      payment at that time; and

  (4) such Debt may not:

     (A) provide for payments of principal of such Debt at the stated
         maturity thereof or by way of a sinking fund applicable thereto or
         by way of any mandatory redemption, defeasance, retirement or
         repurchase thereof by Level 3 (including any redemption,
         retirement or repurchase which is contingent upon events or
         circumstances but excluding any retirement required by virtue of
         acceleration of such Debt upon an event of default thereunder), in
         each case prior to the final Stated Maturity of the notes, or

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<PAGE>

     (B) permit redemption or other retirement (including pursuant to an
         offer to purchase made by Level 3) of such other Debt at the
         option of the holder thereof prior to the final Stated Maturity of
         the notes,

     other than, in the case of clause (A) or (B), any such payment,
     redemption or other retirement (including pursuant to an offer to
     purchase made by Level 3) which is conditioned upon:

     (a) a change of control of Level 3 pursuant to provisions
         substantially similar to those described under "--Covenants--
         Change of Control Triggering Event" (and which shall provide that
         such Debt will not be repurchased pursuant to such provisions
         prior to Level 3's repurchase of the notes required to be
         repurchased by Level 3 pursuant to the provisions described under
         "--Covenants--Change of Control Triggering Event"), or

     (b)  a sale or other disposition of assets pursuant to provisions
          substantially similar to those described under "--Covenants--
          Limitation on Asset Dispositions" (and which shall provide that
          such Debt will not be repurchased pursuant to such provisions
          prior to Level 3's repurchase of the notes required to be
          repurchased by Level 3 pursuant to the provision described under
          "--Covenants--Limitation on Asset Dispositions").

    Subsidiary of any Person means:

  (1)  a corporation more than 50% of the combined voting power of the
       outstanding Voting Stock of which is owned, directly or indirectly,
       by such Person or by one or more other Subsidiaries of such Person or
       by such Person and one or more Subsidiaries thereof; or

  (2)  any other Person (other than a corporation) in which such Person, or
       one or more other Subsidiaries of such Person or such Person and one
       or more other Subsidiaries thereof, directly or indirectly, has at
       least a majority ownership and power to direct the policies,
       management and affairs thereof.

    Telecommunications/IS Assets means:

  (1)  any Property (other than cash, cash equivalents and securities) to be
       owned by Level 3 or any Restricted Subsidiary and used in the
       Telecommunications/IS Business;

  (2)  for purposes of the covenants described under "--Covenants--
       Limitation on Consolidated Debt" and "--Limitation on Liens" only,
       Capital Stock of any Person; or

  (3)  for all other purposes of the indentures, Capital Stock of a Person
       that becomes a Restricted Subsidiary as a result of the acquisition
       of such Capital Stock by Level 3 or another Restricted Subsidiary
       from any Person other than an Affiliate of Level 3;

provided, however, that, in the case of clause (2) or (3), such Person is
primarily engaged in the Telecommunications/IS Business.

    Telecommunications/IS Business means the business of:

  (1)  transmitting, or providing services relating to the transmission of,
       voice, video or data through owned or leased transmission facilities;

  (2)  constructing, creating, developing or marketing communications
       networks, related network transmission equipment, software and other
       devices for use in a communications business;

  (3)  computer outsourcing, data center management, computer systems
       integration, reengineering of computer software for any purpose
       (including, without limitation, for the purposes of porting computer
       software from one operating environment or computer platform to
       another or to address issues commonly referred to as "Year 2000
       issues"); or

  (4)  evaluating, participating or pursuing any other activity or
       opportunity that is primarily related to those identified in (1), (2)
       or (3) above;

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<PAGE>

provided that the determination of what constitutes a Telecommunications/IS
Business shall be made in good faith by the board of directors of Level 3.

    10 1/2% Senior Discount Notes means Level 3's 10 1/2% Senior Discount Notes
due 2008 in an aggregate principal amount at maturity not to exceed
$833,815,000, originally issued on November 24, 1998.

    Unrestricted Subsidiary means:

  (1)  91 Holding Corp. (the subsidiary that holds indirectly Level 3's
       interests in the SR91 tollroad);

  (2)  any Subsidiary of an Unrestricted Subsidiary; and

  (3)  any Subsidiary of Level 3 designated as such pursuant to and in
       compliance with "--Certain Covenants--Limitation on Designations of
       Unrestricted Subsidiaries" and not thereafter redesignated as a
       Restricted Subsidiary as permitted pursuant thereto.

    Voting Stock of any Person means Capital Stock of such Person which
ordinarily has voting power for the election of directors (or persons
performing similar functions) of such Person, whether at all times or only for
so long as no senior class of securities has such voting power by reason of any
contingency.

    Wholly Owned Subsidiary of any Person means a Subsidiary of such Person all
of the outstanding Voting Stock or other ownership interests (other than
directors' qualifying shares) of which shall at the time be owned by such
Person or by one or more Wholly Owned Subsidiaries of such Person or by such
Person and one or more Wholly Owned Subsidiaries of such Person.

Events of Default

    The occurrence of any of the following described events with respect to the
notes of any series will be Events of Default under the indenture under which
the applicable series of notes are issued:

  (1)  failure to pay principal or Accreted Value, as applicable, of, or
       premium, if any, on, any note when due;

  (2)  failure to pay any interest on any note when due, continued for 30
       days;

  (3)  default in the payment of principal and interest on notes required to
       be purchased by an Offer to Purchase as described under "--Certain
       Covenants--Change of Control Triggering Event" when due and payable;

  (4)  failure to perform or comply with the provisions described under "--
       Mergers, Consolidations and Certain Sales of Assets" and "--Certain
       Covenants--Limitation on Asset Dispositions;"

  (5) failure to perform any other covenant or agreement of Level 3 under
      the applicable indenture or the notes, continued for 60 days after
      written notice to Level 3 by the trustee or holders of at least 25% in
      aggregate principal amount, in the case of each of the 2008 senior
      notes and the 2010 senior notes, and aggregate principal amount at
      maturity, in the case of the 2010 senior discount notes, then
      outstanding;

  (6) default under the terms of any instrument evidencing or securing Debt
      of Level 3 or any Restricted Subsidiary having an outstanding
      principal amount of not less than $25 million or its foreign currency
      equivalent at the time individually or in the aggregate, which default
      results in the acceleration of the payment of that indebtedness or
      constitutes the failure to pay that indebtedness when due, after
      expiration of any applicable grace period;

  (7) the rendering of a judgment or judgments against Level 3 or any
      Restricted Subsidiary in an aggregate amount in excess of $25 million
      or its foreign currency equivalent at the time and shall not be
      waived, satisfied or discharged for any period of 45 consecutive days
      during which a stay of enforcement shall not be in effect;

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<PAGE>

  (8) any Restricted Subsidiary Guarantee ceases to be in full force and
      effect, other than in accordance with the terms of that Subsidiary
      Guaranty, or any Guarantor denies or disaffirms its obligations under
      its Restricted Subsidiary Guarantee; and

  (9) certain events of bankruptcy, insolvency or reorganization affecting
      Level 3 or any Significant Subsidiary.

Subject to the provisions of the applicable indenture relating to the duties of
the trustee in case an Event of Default shall occur and be continuing, the
trustee will not be under any obligation to exercise any of its rights or
powers under the applicable indenture at the request or direction of any of the
holders of notes, unless those holders shall have offered to the trustee
reasonable indemnity. Subject to provisions for the indemnification of the
trustee, the holders of a majority in aggregate principal amount, in the case
of each of the 2008 senior notes and the 2010 senior notes, and aggregate
principal amount at maturity, in the case of the 2010 senior discount notes,
then outstanding will have the right to direct the time, method and place of
conducting any proceeding for any remedy available to the trustee or exercising
any trust or power conferred on the trustee with respect to such series of
notes.

    If any Event of Default, other than an Event of Default described in clause
(9) above regarding Level 3, shall occur and be continuing, either the trustee
or the holders of at least 25% in aggregate principal amount, in the case of
each of the 2008 senior notes and the 2010 senior notes, and aggregate
principal amount at maturity, in the case of the 2010 senior discount notes, of
any series then outstanding may, in the case of the 2008 senior notes and the
2010 senior notes, accelerate the maturity of all notes of such series and, in
the case of the 2010 senior discount notes, declare the Accreted Value,
premium, if any, and accrued and unpaid interest, if any, in respect of such
notes to be immediately due and payable. However, after an acceleration or
declaration, as applicable, but before a judgment or decree based on
acceleration or declaration, as applicable, the holders of a majority in
aggregate principal amount, in the case of each of the 2008 senior notes and
the 2010 senior notes, and aggregate principal amount at maturity, in the case
of the 2010 senior discount notes, then outstanding may, under certain
circumstances, rescind and annul the acceleration or declaration, as
applicable, with respect to such series if all Events of Default, other than
the non-payment of accelerated principal or Accreted Value relating to such
series have been cured or waived as provided in the indentures. If an Event of
Default specified in clause (9) above occurs regarding Level 3, the principal
amount or Accreted Value, as applicable, the premium, if any, and accrued and
unpaid interest, if any, in respect of the outstanding notes will automatically
become immediately due and payable without any declaration or other act on the
part of the trustee or any holder. For information as to waiver of defaults,
see "--Amendment, Supplement and Waiver."

    No holder of any note will have any right to institute any proceeding
relating to the indentures or for any remedy under the applicable indenture,
unless:

  (1) the holder shall have previously given to the trustee written notice
      of a continuing Event of Default with respect to the holder's series
      of notes;

  (2) the holders of at least 25% in aggregate principal amount, in the case
      of each of the 2008 senior notes and the 2010 senior notes, and
      aggregate principal amount at maturity, in the case of the 2010 senior
      discount notes, of such series then outstanding shall have made
      written request and offered reasonable indemnity to the trustee to
      institute the proceeding as trustee; and

  (3) the trustee has not have received from the holders of a majority in
      aggregate principal amount of such series of notes, in the case of
      each of the 2008 senior notes and the 2010 senior notes, and aggregate
      principal amount at maturity of such series of notes, in the case of
      the 2010 senior discount notes, then outstanding a direction
      inconsistent with this request and failed to institute the proceeding
      within 60 days.


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<PAGE>

However, these limitations do not apply to a suit instituted by a holder of a
note for enforcement of payment of the principal or Accreted Value, as
applicable, of, and premium, if any, or interest on the note on or after the
respective due dates expressed in the note.

    Within 30 days after the occurrence of any event which with the giving of
notice and the lapse of time would become an Event of Default, Level 3 must
deliver to the Trustee written notice in the form of an Officers' Certificate
of the event, its status and what action Level 3 is taking or proposes to take
regarding the event. Level 3 also will be required to deliver to the trustee
annually a statement as to the performance by Level 3 of certain of its
obligations under the indentures and as to any default in its performance.

Amendment, Supplement and Waiver

    Level 3 and the trustee may, at any time and from time to time, without
notice to or consent of any holders of notes, enter into one or more indentures
supplemental to the indentures relating to any series to:

  (1) evidence the succession of another Person to Level 3 and the
      assumption by the successor of the covenants of Level 3 in the
      indentures and the notes;

  (2) add to the covenants of Level 3, for the benefit of the holders, or
      surrender any right or power conferred on Level 3 by the indentures;

  (3) add any additional Events of Defaults;

  (4) provide for uncertificated notes in addition to or in place of
      certificated notes;

  (5) evidence and provide for the acceptance of appointment under the
      indentures of a successor trustee;

  (6) secure the notes;

  (7) comply with the Trust Indenture Act or the Securities Act, including
      Regulation S under the Securities Act;

  (8) add additional Guarantees relating to the notes or release Guarantors
      from Restricted Subsidiary Guarantees as provided by the terms of the
      indentures; or

  (9) cure any ambiguity in the indentures, correct or supplement any
      provision in the indentures which may be inconsistent with any other
      provision in the indentures or add any other provision relating to
      matters or questions arising under the indentures;

as long as these actions do not adversely affect the interests of the holders
in any material respect.

    With the consent of the holders of at least a majority in principal amount,
in the case of each of the 2008 senior notes and the 2010 senior notes, and
aggregate principal amount at maturity, in the case of the 2010 senior discount
notes, of the outstanding notes of a series, Level 3 and the trustee may enter
into one or more supplemental indentures to add any provisions to or change in
any manner or eliminate any of the provisions of any indentures or modify in
any manner the rights of the holders. However, with respect to any series of
notes, no supplemental indenture shall, without the consent of the holder of
each outstanding note of the applicable series:

  (1) change the Stated Maturity of the principal or Accreted Value, as
      applicable, of, or any installment of interest on, any note of the
      applicable series, or reduce the principal amount or Accreted Value,
      as applicable, of any note or the interest on any note that would be
      due and payable upon the Stated Maturity of the note, or change the
      place of payment where, or the coin or currency in which, any note of
      the applicable series or any premium or interest on the note is
      payable, or impair the right to institute suit for the enforcement of
      any such payment on or after the Stated Maturity of the note;

  (2) reduce the percentage in principal amount, in the case of each of the
      2008 senior notes and the 2010 senior notes, or principal amount at
      maturity, in the case of the 2010 senior discount notes, of the
      outstanding notes of the applicable series, the consent of whose
      holders is necessary for any

                                       78
<PAGE>

      related supplemental indenture or required for any waiver of
      compliance with certain provisions of the indentures or certain
      Defaults under the indentures;

   (3) subordinate in right of payment, or otherwise subordinate, the notes
       of the applicable series to any other Debt;

   (4) except as otherwise required by the indentures, release any security
       interest that may have been granted in favor of the holders of the
       notes;

   (5) reduce the premium payable upon the redemption of any note nor change
       the time at which any note may be redeemed, as described under "--
       Optional Redemption;"

   (6) reduce the premium payable upon a Change of Control Triggering Event
       or, at any time after a Change of Control Triggering Event has
       occurred, change the time at which the Offer to Purchase relating to
       the Change of Control Triggering Event must be made or at which the
       notes of the applicable series must be repurchased according to the
       Offer to Purchase;

   (7) at any time after Level 3 is obligated to make an Offer to Purchase
       with the Net Available Proceeds from Asset Dispositions, change the
       time at which the Offer to Purchase must be made or at which the
       notes must be repurchased according to the Offer to Purchase;

   (8) make any change in any Restricted Subsidiary Guarantee that would
       adversely affect the holders of the notes;

   (9) modify any provision of the indentures regarding the calculation of
       Accreted Value relating to the 2010 senior discount notes; or

  (10) modify any provision of this paragraph, except to increase any
       percentage described in this paragraph.

    The holders of not less than a majority in principal amount, in the case
of each of the 2008 senior notes and the 2010 senior notes, and aggregate
principal amount at maturity, in the case of the 2010 senior discount notes,
of the outstanding notes of a series may, on behalf of the holders of all the
notes of the applicable series, waive any past Default under the indentures
and its consequences, except a Default:

  (1) in the payment of the principal or Accreted Value, as applicable, of,
      or premium, if any, or interest on any note; or

  (2) relating to a covenant or provision of the indentures which under the
      last sentence of the prior paragraph cannot be modified or amended
      without the consent of the holder of each outstanding note affected.

    The 2008 senior notes, the 2010 senior notes and the 2010 senior discount
notes each are a separate series of debt securities, and as such will vote
separately on matters under the indentures. In addition, the waiver of any
condition or covenant with respect to a series of notes requiring absence of a
Default or Event of Default may be obtained with consent of the requisite
percentage of the holders of only the series of notes as to which there is a
Default or Event of Default.

Satisfaction and Discharge of the Indentures, Defeasance

    Level 3 may terminate its obligations under the indentures with respect to
any series of notes when:

  (1) either:

     (A) all outstanding notes of the applicable series have been delivered
         to the trustee for cancelation, or

     (B) all notes of the applicable series not previously delivered to the
         trustee for cancelation have become due and payable, will become
         due and payable within one year or are to be called for redemption
         within one year under irrevocable arrangements satisfactory to the
         trustee for the giving of notice of redemption by the trustee in
         the name and at the expense of Level 3, and

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<PAGE>

         Level 3 has irrevocably deposited or caused to deposited with the
         trustee funds in an amount sufficient to pay and discharge the
         entire indebtedness on the notes of the applicable series not
         previously delivered to the trustee for cancelation, for principal
         or Accreted Value, as applicable, of, or premium, if any, on, and
         interest on, the notes of the applicable series;

  (2) Level 3 has paid or caused to be paid all other sums payable by Level
      3 under the applicable indenture with respect to that series; and

  (3) Level 3 has delivered an Officers' Certificate and an Opinion of
      Counsel relating to compliance with the conditions set forth in the
      applicable indenture.

    Level 3, at its election, shall:

  (1) be deemed to have paid and discharged its debt on any series of notes
      and the applicable indenture shall cease to be of further effect as to
      all outstanding notes of the applicable series, except as to:

     (A)  rights of registration of transfer, substitution and exchange of
          notes and Level 3's right of optional redemption,

     (B)  rights of holders to receive payment of principal or Accreted
          Value, as applicable, of, premium, if any, and interest on the
          notes, but not the Purchase Price referred to under "--Certain
          Covenants--Change of Control Triggering Event" or under "--
          Limitation on Asset Dispositions," and any rights of the holders
          relating to that amount,

     (C)  the rights, obligations and immunities of the trustee under the
          applicable indenture, and

     (D)  certain other specified provisions in the applicable indenture,

  or

  (2) cease to be under any obligation to comply with various restrictive
      covenants, including those described under "--Certain Covenants," and
      terminate the operation of certain Events of Default, after the
      irrevocable deposit by Level 3 with the trustee, in trust for the
      benefit of the holders of any series of notes, at any time prior to
      the maturity of the applicable series of notes, of:

     (A)  money in an amount,

     (B)  Government Securities which through the payment of interest and
          principal will provide, not later than one day before the due
          date of payment in respect of the notes, money in an amount, or

     (C)  a combination of money and Government Securities,

     sufficient to pay and discharge the principal or Accreted Value, as
     applicable, of, premium, if any, on, and interest on, the applicable
     series of notes then outstanding on the dates on which any of these
     payments are due in accordance with the terms of the applicable
     indenture and of the applicable series of notes.

This defeasance or covenant defeasance shall be deemed to occur only if
specified conditions are satisfied, including, among other things, delivery by
Level 3 to the trustee of an Opinion of Counsel acceptable to the trustee to
the effect that:

  (1)  the deposit, defeasance and discharge will not be deemed, or result
       in, a taxable event relating to the holders for U.S. federal income
       tax purposes, and

  (2)  Level 3's deposit will not result in the related trust or the trustee
       being subject to regulation under the Investment Company Act of 1940.


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Governing Law

    The indentures and the notes will be governed by the laws of the State of
New York, without reference to principles of conflicts of law.

The Trustee

    The Bank of New York is the trustee under the indentures. The address of
the trustee is 101 Barclay Street, Floor 21 West, New York, New York 10286. The
trustee is also the trustee with respect to the indentures relating to Level
3's 9 1/8% Senior Notes, 10 1/2% Senior Discount Notes, 6% Convertible Notes,
the Euro Notes and the New Convertible Notes.

No Personal Liability of Directors, Officers, Employees and Stockholders

    No director, officer, employee, incorporator or stockholder of Level 3, as
such, shall have any liability for any obligations of Level 3 under the notes
or the indentures or for any claim based on, in respect of, or by reason of,
these obligations or their creation, solely by reason of its status as
director, officer, employee, incorporator or stockholder of Level 3. By
accepting a note each holder waives and releases all liability of this kind.
The waiver and release are part of the consideration for issuance of the notes.
Nevertheless, the waiver may not be effective to waive liabilities under the
federal securities laws, and the SEC has taken the view that these types of
waivers are against public policy.

Transfer and Exchange

    A holder may transfer or exchange notes in accordance with the indentures.
Level 3, the exchange agent and the trustee may require a holder, among other
things, to furnish appropriate endorsements and transfer documents, and Level 3
may require a holder to pay any taxes and fees required by law or permitted by
the indentures.

Book-Entry System

    The notes of each series will initially be issued in the form of one or
more global securities registered in the name of The Depository Trust Company,
or DTC, or its nominee.

    Upon the issuance of a global security, DTC or its nominee will credit the
accounts of persons holding through it with, in the case of each of the 2008
senior notes and the 2010 senior notes, the respective principal amounts or, in
the case of the 2010 senior discount notes, the respective principal amounts at
maturity represented by the global security purchased by those persons in this
offering. Those accounts initially were designated by the initial purchasers.
Ownership of beneficial interests in a global security will be limited to
persons that have accounts with DTC, or participants, or persons that may hold
interests through participants. Ownership of beneficial interests in a global
security will be shown on, and the transfer of that ownership interest will be
effected only through, records maintained by DTC, with respect to participants'
interests and the records of participants relating to interests of persons
other than participants. The laws of some jurisdictions require that some
purchasers of securities take physical delivery of the securities in definitive
form. These limits and laws may impair the ability to transfer beneficial
interests in a global security.

    Payment of principal of and interest on notes represented by a global
security will be made in immediately available funds to DTC or its nominee, as
the case may be, as the sole registered owner and the sole holder of the notes
represented by the global security for all purposes under the indentures. Level
3 has been advised by DTC that upon receipt of any payment of principal of or
interest on any global security, DTC will immediately credit on its book-entry
registration and transfer system the accounts of participants with payments in
amounts proportionate to their respective beneficial interests in the principal
or face amount of the global security as shown on the records of DTC. Payments
by participants to owners of beneficial interests in a global security held
through participants will be governed by standing instructions and customary
practices as is now the case with securities held for customer accounts
registered in street name and will be the sole responsibility of those
participants.

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    A global security may not be transferred except as a whole by DTC or a
nominee of DTC to a nominee of DTC or to DTC. A global security is exchangeable
for certificated notes only if:


     (1) DTC notifies Level 3 that it is unwilling or unable to continue as
       a depositary for the global security if at any time DTC ceases to be
       a clearing agency registered under the Exchange Act;

     (2) Level 3 in its discretion at any time determines not to have all
       the notes represented by such global security; or

     (3) a Default or an Event of Default relating to the notes represented
       by the global security has occurred and is continuing.

Any global security that is exchangeable for certificated notes in accordance
with the preceding sentence will be exchanged for certificated notes in
authorized denominations and registered in the names as DTC or any successor
depositary holding the global security may direct. However, a global security
is only exchangeable, for a global security of like denomination to be
registered in the name of DTC or any successor depositary or its nominee. If a
global security becomes exchangeable for certificated notes:

     (1) certificated notes will be issued only in fully registered form in
       denominations of $1,000 principal amount or principal amount at
       maturity, as applicable, or integral multiples of $1,000;

     (2) payment of principal or Accreted Value, as applicable, of, and
       premium, if any, and interest on, the certificated notes will be
       payable, and the transfer of the certificated notes will be
       registerable, at the office or agency of Level 3 maintained for
       those purposes; and

     (3) no service charge will be made for any registration of transfer or
       exchange of the certificated notes, although Level 3 may require
       payment of a sum sufficient to cover any tax or governmental charge
       imposed in connection with the issuance.

    So long as DTC or any successor depositary for a Global Security or any
nominee is the registered owner or holder of the global security, DTC or
successor depositary or nominee, as the case may be, will be considered the
sole owner or holder of the notes represented by the global security for all
purposes under the indentures and the notes.

    Except as set forth above, owners of beneficial interests in a Global
Security will not be entitled to have the notes represented by such global
security registered in their names, will not receive or be entitled to receive
physical delivery of certificated notes in definitive form and will not be
considered to be the owners or holders of any notes under the global security.
Accordingly, each person owning a beneficial interest in a global security must
rely on the procedures of DTC or any successor depositary. And, if that person
is not a participant, the person must rely on the procedures of the participant
through which that person owns its interest, to exercise any rights of a holder
under the indenture. Under existing industry practices, if Level 3 requests any
action of holders or an owner of a beneficial interest in a global security
desires to take any action under the applicable indenture, DTC or any successor
depositary would authorize the participants holding the relevant beneficial
interest to take that action. The participants then would authorize beneficial
owners owning through the participants to take the action or would otherwise
act upon the instructions of beneficial owners owning through them.

    DTC has advised Level 3 that it will take any action permitted to be taken
by a holder of notes only at the direction of one or more participants to whose
account with DTC interests in the global security are credited. Further, DTC
will take action only as to the portion of the aggregate principal amount at
maturity of the notes as to which the participant or participants has or have
given the direction.

    Although DTC has agreed to the procedures described above in order to
facilitate transfers of interests in global securities among participants of
DTC, it is under no obligation to perform these procedures, and the procedures
may be discontinued at any time. None of Level 3, the trustee, any agent of
Level 3 or the initial

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purchasers will have any responsibility for the performance by DTC or its
participants or indirect participants of their respective obligations under the
rules and procedures governing their operations.

    DTC has provided the following information to us. DTC is a:

  (1) limited-purpose trust company organized under the New York Banking
      Law;

  (2) a banking organization within the meaning of the New York Banking Law;

  (3) a member of the U.S. Federal Reserve System;

  (4) a clearing corporation within the meaning of the New York Uniform
      Commercial Code; and

  (5) a clearing agency registered under the provisions of Section 17A of
      the Securities Exchange Act.


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            Certain United States Federal Income Tax Considerations

    The following general discussion summarizes certain U.S. federal income tax
consequences of the exchange of the original notes and the holding and
disposition of the new notes. This discussion only deals with persons that hold
the notes as capital assets within the meaning of Section 1221 of the Internal
Revenue Code, and that purchased the original notes for cash at original issue.
This discussion does not address the U.S. federal income tax consequences that
may be relevant to a particular holder subject to special treatment under
certain U.S. federal income tax laws, such as dealers in securities or foreign
currency, banks, trusts, insurance companies, tax-exempt organizations, persons
that hold notes as part of a straddle, hedge against currency risk or
constructive sale or conversion transaction, persons that have a functional
currency other than the U.S. dollar and investors in pass-through entities.

    This discussion is based on the Internal Revenue Code, the final, temporary
and proposed Treasury regulations promulgated under the Internal Revenue Code,
administrative pronouncements and judicial decisions, all as in effect on the
date of this prospectus and all of which are subject to change, possibly with
retroactive effect. Level 3 has not requested, and will not request, a ruling
from the IRS regarding any of the U.S. federal income tax consequences
described below. As a result, there can be no assurance that the IRS will not
disagree with or challenge any of the conclusions set forth in this prospectus.

    This discussion does not discuss all of the U.S. federal income tax
considerations that may be relevant to a holder of notes. Prospective
participants in the exchange offer are urged to consult their own tax advisors
regarding the application to their particular situations of U.S. federal income
tax laws, as well as the laws of any state, local or foreign taxing
jurisdiction.

U.S. Holders

    The following discussion is limited to persons who or which are U.S.
holders. For these purposes, U.S. holder means:

  (1) an individual who is a citizen or resident of the U.S.;

  (2) a corporation or other entity taxable as a corporation created or
      organized under the laws of the U.S. or any political subdivision of or
      in the U.S.;

  (3) an estate or trust the income of which is subject to U.S. federal
      income tax regardless of its source;

  (4) a trust subject to the primary supervision of a U.S. court and the
      control of one or more U.S. persons; or

  (5) a person whose worldwide income or gain is otherwise subject to U.S.
      federal income tax on a net income basis.

    Stated Interest on Notes Other Than the 2010 Senior Discount Notes. Stated
interest on a note other than a discount note will be taxable to a U.S. Holder
as ordinary interest income in accordance with such holder's regular method of
tax accounting.

    Original Issue Discount on the 2010 Senior Discount Notes. Because the
original 2010 senior discount notes were issued at a substantial discount from
their stated principal amount, both the original 2010 senior discount notes and
the new 2010 senior discount notes will be treated as issued with original
issue discount for U.S. federal income tax purposes. Original issue discount is
the excess of:

    (1) a note's stated redemption price at maturity over

    (2) its issue price.

    The stated redemption price at maturity of a 2010 senior discount note is
the sum of the principal amount payable at maturity and all stated interest
payments to be made on the note. The issue price of a 2010 senior discount note
is the first price at which a substantial amount of the 2010 senior discount
notes is sold to the

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public for cash, excluding sales to bond houses, brokers or similar persons or
organizations acting in the capacity as underwriters, placement agents or
wholesalers.

    A U.S. holder of a 2010 senior discount note is required to include
original issue discount in income as ordinary interest as it accrues under a
constant yield method in advance of receipt of cash payments attributable to
that income, regardless of the U.S. holder's regular method of tax accounting.
A U.S. holder will not be required to report separately as taxable income
actual distributions of stated interest relating to a 2010 senior discount
note. In general, the amount of original issue discount included in income by a
U.S. holder of a 2010 senior discount note is the sum of the daily portions of
original issue discount for each day during the taxable year, or portion
thereof, on which the U.S. holder held the 2010 senior discount note. The daily
portion is determined by allocating the original issue discount for an accrual
period equally to each day in that accrual period. The accrual period for a
2010 senior discount note may be of any length and may vary in length over the
term of the 2010 senior discount note. However, no accrual period may exceed
one year, and each scheduled payment of principal or interest must occur either
on the first or final day of an accrual period.

    The amount of original issue discount attributable to an accrual period is
generally equal to the product of the 2010 senior discount note's adjusted
issue price at the beginning of that accrual period and its yield to maturity,
i.e., the discount rate that, when applied to all payments under the 2010
senior discount note, results in a present value equal to the issue price. The
adjusted issue price of a 2010 senior discount note at the beginning of any
accrual period is the issue price of the 2010 senior discount note, plus the
amount of original issue discount allocable to all prior accrual periods, minus
the amount of any prior payments in respect of the 2010 senior discount note,
including payments of stated interest. Under these rules, a U.S. holder
generally must include in income an increasingly greater amount of original
issue discount in each successive accrual period.

    In determining the yield and maturity relating to the 2010 senior discount
notes, Level 3 will not be deemed to exercise any call option on the 2010
senior discount notes. If Level 3 elects to commence the accrual of cash
interest on the 2010 senior discount notes prior to March 15, 2005, the 2010
senior discount notes may be treated solely for the purpose of applying the
original issue discount rules as if each 2010 senior discount note were retired
and then reissued on the date of this election for an amount equal to its
adjusted issue price on that date.

    If a U.S. holder is a corporation, a small portion of the amount such
holder would have to accrue may be characterized, by operation of the
applicable high yield debt obligation rules, as a dividend for purposes of
securing a dividend received deduction. Corporate U.S. holders are encouraged
to consult their tax advisors on this point.

    Applicable High Yield Discount Obligation. The original issue discount on
any obligation that constitutes an applicable high yield discount obligation
generally is not deductible until paid, and deductions relating to certain
portions of original issue discount may be wholly disallowed. The new 2010
senior discount notes are applicable high yield discount obligations. As a
result, Level 3 will not be allowed a deduction for the accrual of original
issue discount on the 2010 senior discount notes until this interest is
actually paid. In addition, a portion of the OID will never be deductible by
us.

    Sale, Exchange or Redemption of Notes. Upon the sale, exchange or
redemption of a note, a U.S. holder generally will recognize taxable gain or
loss equal to the difference between:

  (1)  the amount realized on that disposition and

  (2)  the U.S. holder's adjusted tax basis in the note.

    A U.S. holder's adjusted tax basis in a 2010 senior discount note generally
will equal the cost of the 2010 senior discount note increased by any original
issue discount included in income through the date of disposition and decreased
by any payments received on the 2010 senior discount note, including payments
of stated interest.

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<PAGE>

    Notwithstanding the foregoing, any amounts realized in connection with any
sale, exchange, or redemption with respect to accrued interest not previously
included in income will be treated as ordinary interest income. A U.S. holder's
adjusted tax basis on a note other than a 2010 senior discount note generally
will equal the cost of such note less any principal payments received by the
holder.

    Exchange Offer. The exchange of original notes for new notes in the
exchange offer will not constitute a taxable event for U.S. federal income tax
purposes. As a result:

  (1) a U.S. holder of notes will not recognize taxable gain or loss as a
      result of the exchange of original notes for new notes in the exchange
      offer;

  (2) the holding period of the new notes will include the holding period of
      the original notes surrendered in exchange for the new notes; and

  (3) a U.S. holder's adjusted tax basis in the new notes will be the same
      as the U.S. holder's adjusted tax basis in the original notes
      surrendered in exchange for the new notes.

    Information Reporting and Backup Withholding. A U.S. holder of notes may be
subject to backup withholding at a 31% rate relating to reportable payments,
which include interest, including original issue discount, or principal paid on
or the gross proceeds of a sale, exchange or redemption of the notes. The payor
of any reportable payments will be required to deduct and withhold 31% of these
payments if:

  (1) the payee fails to establish that it is entitled to an exemption;

  (2) the payee fails to furnish a correct taxpayer identification number to
      the payor in the prescribed manner;

  (3) the IRS notifies the payor that the taxpayer identification number
      furnished by the payee is incorrect;

  (4) the payee has failed properly to report the receipt of reportable
      payments and the IRS has notified the payor that backup withholding is
      required; or

  (5) the payee fails to certify under penalties of perjury that it is not
      subject to backup withholding.

If any one of these events occurs with respect to a U.S. holder of notes, Level
3 or its paying or other withholding agent will be required to withhold 31% of
any payments of principal, premium, if any, and interest, including original
issue discount, on a note.

    Any amount withheld from a payment to a U.S. holder under the backup
withholding rules will be allowed as a refund or credit against the holder's
U.S. federal income tax liability, so long as the required information is
provided to the IRS. Level 3, its paying agent or other withholding agent
generally will report to a U.S. holder of notes and to the IRS the amount of
any reportable payments made on the notes for each calendar year and the amount
of tax withheld, if any, relating to these payments. Level 3 will report
annually to the IRS and to each holder the amount of original issue discount
accrued on the note for the calendar year.

    Recently adopted Treasury regulations that generally are effective for
payments made after December 31, 2000, subject to certain transition rules,
will generally expand the circumstances under which information reporting and
backup withholding may apply. Holders should consult their tax advisors
regarding the application of the information reporting and backup withholding
rules, including these Treasury regulations.

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<PAGE>

Non-U.S. Holders

    The following discussion is limited to the U.S. federal income tax
consequences relevant to a holder of a note that is not a U.S. holder.

    Stated Interest and Original Issue Discount. Subject to the discussion of
backup withholding below, payments of interest, including original issue
discount, on a note to a non-U.S. holder generally will not be subject to U.S.
federal income or withholding tax, as long as:

  (1) the holder does not actually or constructively own 10% or more of the
      total combined voting power of all classes of stock of Level 3 that
      are entitled to vote;

  (2) the holder is not:

     (A)  a controlled foreign corporation that is related to Level 3
          through stock ownership, or

     (B) a bank receiving interest on a loan entered into in the ordinary
         course of business;

  (3) the interest is not effectively connected with the conduct by the non-
      U.S. holder of a trade or business within the U.S.; and

  (4) Level 3 or its paying agent receives:

     (A)  from the non-U.S. holder, properly completed documentation signed
          under penalties of perjury, which provides the non-U.S. holder's
          name and address and certifies that the non-U.S. holder is not a
          U.S. person, or

     (B)  from a security clearing organization, bank or other financial
          institution that holds the notes in the ordinary course of its
          trade or business on behalf of the non-U.S. holder, certification
          under penalties of perjury that the documentation has been
          received by it or by another such financial institution from the
          non-U.S. holder, and a copy of the documentation is furnished to
          the payor.

    New Treasury regulations regarding information reporting and backup
withholding unify current certification procedures and forms and clarify
reliance standards and certain rules relating to foreign partnerships. For
example, these Treasury regulations require, in the case of notes held by a
foreign partnership, that:

  (1)  the certification described in clause (4) above be provided by the
       partners rather than by the foreign partnership; and

  (2)  the partnership provide certain information, including a taxpayer
       identification number. A look-through rule applies in the case of
       tiered partnerships.

    These regulations will become effective for payments made after December
31, 2000, subject to certain transition rules. Holders should consult their tax
advisors regarding the application of the information reporting and backup
withholding rules, including these Treasury regulations.

    A non-U.S. holder that does not qualify for exemption from withholding
under the second preceding paragraph generally will be subject to withholding
of U.S. federal income tax at a 30% rate, or lower applicable treaty rate, on
payments of interest, including original issue discount, on the notes.

    If interest, including original issue discount, on the notes is effectively
connected with the conduct by a non-U.S. holder of a trade or business within
the U.S., the interest will be subject to U.S. federal income tax on a net
income basis at the rate applicable to U.S. persons generally, and, for
corporate holders, may also be subject to a 30% branch profits tax. If
interest, including original issue discount, is subject to U.S. federal income
tax on a net income basis in accordance with these rules, the payments will not
be subject to U.S. withholding tax so long as the relevant non-U.S. holder
provides Level 3 or its paying agent with a properly executed Form 4224. See
the discussion above with regard to the certification rules under recently
enacted Treasury regulations.

                                       87
<PAGE>

    Non-U.S. holders should consult their own tax advisors regarding any
applicable income tax treaties, which may provide for a lower rate of
withholding tax, exemption from or reduction of branch profits tax, or other
rules different from those described above.

    Sale, Exchange or Redemption of Notes. Subject to the discussion of backup
withholding, any gain realized by a non-U.S. holder on the sale, exchange or
redemption of a note generally will not be subject to U.S. federal income tax,
unless:

  (1) the gain is effectively connected with the conduct by the non-U.S.
      holder of a trade or business within the United States;

  (2) the non-U.S. holder is an individual who is present in the United
      States for 183 days or more in the taxable year of disposition and
      certain other conditions are satisfied; or

  (3) the non-U.S. holder is subject to tax under the provisions of U.S.
      federal income tax law applicable to certain expatriates.

    Information Reporting and Backup Withholding. Level 3 must report annually
to the IRS and to each non-U.S. holder the amount of any interest paid and
original issue discount accrued on the notes in that year and the amount of tax
withheld, if any, relating to those payments. Copies of those information
returns also may be made available, under the provisions of a specific treaty
or agreement, to the taxing authorities of the country in which the non-U.S.
holder resides.

    Backup withholding and information reporting generally will not apply to
interest, including original issue discount, payments made to a non-U.S. holder
in respect of the notes if the non-U.S. holder furnishes Level 3 or its paying
agent with appropriate documentation signed under penalties of perjury stating
that the beneficial owner is not a U.S. person and setting forth the non-U.S.
holder's name and address. However, neither Level 3 nor its paying agent may
have actual knowledge that the holder is a U.S. person or that the conditions
of an exemption are not in fact satisfied. See the discussion above with regard
to the certification rules under recently enacted Treasury regulations.

    The payment of proceeds from a non-U.S. holder's disposition of notes to or
through the U.S. office of any broker, domestic or foreign, will be subject to
information reporting and possible backup withholding unless the holder
certifies as to its non-U.S. status under penalties of perjury or otherwise
establishes an exemption. However, the broker must not have actual knowledge
that the holder is a U.S. person or that the conditions of an exemption are not
in fact satisfied. The payment of the proceeds from a non-U.S. holder's
disposition of a note to or through a non-U.S. office of either a U.S. broker
or a non-U.S. broker that is a U.S.-related person will be subject to
information reporting, but not backup withholding. However, this payment of
proceeds will not be subject to information reporting if the broker has
documentary evidence in its files that the non-U.S. holder is not a U.S. person
and the broker has no knowledge to the contrary, or the non-U.S. holder
establishes an exemption. For this purpose, a U.S.-related person is:

  (1)  a controlled foreign corporation for U.S. federal income tax
       purposes; or

  (2)  a foreign person 50% or more of whose gross income from all sources
       for the three-year period ending with the close of its taxable year
       preceding payment, or for the part of the period that the broker has
       been in existence, is derived from activities that are effectively
       connected with the conduct of a U.S. trade or business.

Neither information reporting nor backup withholding will apply to a payment of
the proceeds of a non-U.S. holder's disposition of notes by or through a non-
U.S. office of a non-U.S. broker that is not a U.S. related person. See the
discussion above with regard to the certification rules under recently enacted
Treasury regulations.

    Any amounts withheld under the backup withholding rules from a payment to a
non- U.S. holder will be allowed as a refund or a credit against the non-U.S.
holder's U.S. federal income tax liability, as long as the required procedures
are followed.

                                       88
<PAGE>

    New Treasury regulations that generally are effective for payments made
after December 31, 2000, subject to certain transition rules, will generally
expand the circumstances under which information reporting and backup
withholding may apply. Holders should consult their tax advisors regarding the
application of the information reporting and backup withholding rules,
including these Treasury regulations.

Effect on Level 3

    Applicable High Yield Debt Obligation. The 2010 senior discount notes are
subject to special rules that apply to the deduction of original issue discount
relating to any debt instrument that is an applicable high yield debt
obligation. Under these rules, we may not deduct original issue discount until
we actually pay it. Also, a portion of the OID will never be deductible by us.

                              Plan of Distribution

    Each broker-dealer that receives new notes for its own account in the
exchange offer must acknowledge that it will deliver a prospectus in connection
with any resale of those new notes. Each letter of transmittal that accompanies
this prospectus states that by so acknowledging and by delivering a prospectus,
a broker-dealer will not be deemed to admit that it is an underwriter within
the meaning of the Securities Act. A participating broker-dealer may use this
prospectus, in connection with resales of new notes received in exchange for
original notes where those new notes were acquired by the broker-dealer as a
result of market-making activities or other trading activities. Level 3 has
agreed that, starting on the date of this prospectus and ending on the close of
business on the day that is 180 days following the date of this prospectus, it
will make this prospectus available to any broker-dealer for use in connection
with any of those resales. In addition, until December 11, 2000, all dealers
effecting transactions in the notes may be required to deliver a prospectus.

    Level 3 will not receive any proceeds from any sale of new notes by broker-
dealers. New notes received by broker-dealers for their own account in the
exchange offer may be sold from time to time in one or more transactions. These
sales may be made in the over-the-counter market, in negotiated transactions,
through the writing of options on the new notes or a combination of these
methods of resale, and may be at market prices prevailing at the time of
resale, at prices related to the prevailing market prices or negotiated prices.
Any resale of this kind may be made directly to purchasers or to or through
brokers or dealers who may receive compensation in the form of commissions or
concessions from any of these broker-dealers and/or the purchasers of any of
these new notes. Any broker-dealer that resells new notes that were received by
it for its own account in the exchange offer and any broker or dealer that
participates in a distribution of these new notes may be deemed to be an
underwriter within the meaning of the Securities Act. If this is the case, any
profit of any of these resales of new notes and any commissions or concessions
received by any of these persons may be deemed to be underwriting compensation
under the Securities Act. The letter of transmittal states that by
acknowledging that it will deliver and by delivering a prospectus, a broker-
dealer will not be deemed to admit that it is an underwriter within the meaning
of the Securities Act.

    For a period of 180 days after the date of this prospectus, Level 3 will
promptly send additional copies of this prospectus and any amendment or
supplement to this prospectus to any broker-dealer that requests those
documents in its letter of transmittal. Level 3 has agreed to pay all expenses
incident to the exchange offer, other than the expenses of counsel for the
holders of the original notes and commissions or concessions of any brokers or
dealers. Level 3 also has agreed to indemnify the holders of the original
notes, including any broker-dealers, against various liabilities, including
liabilities under the Securities Act.

                                 Legal Matters

    Willkie Farr & Gallagher, New York, New York, will pass upon the validity
of the new notes offered in this prospectus for Level 3.


                                       89
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                                    Experts

    The consolidated financial statements of Level 3 Communications, Inc. as
of December 31, 1999 and 1998 and for the years then ended, incorporated by
reference in this registration statement have been audited by Arthur Andersen
LLP, independent public accountants, as indicated in their reports with
respect thereto, and are incorporated herein in reliance upon the authority of
said firm as experts in giving said report.

    The consolidated statements of operations, cash flows, changes in
stockholders' equity and comprehensive income (loss) of Level 3
Communications, Inc. for the year ended December 27, 1997, as well as the
consolidated balance sheets of RCN Corporation and Subsidiaries as of December
31, 1999 and 1998 and the related statements of operations, cash flows,
comprehensive income, and changes in stockholders' equity for each of the
three years in the period ended December 31, 1999, incorporated by reference
in this registration statement, have been incorporated herein in reliance on
the reports of PricewaterhouseCoopers LLP, independent accountants, given on
the authority of that firm as experts in accounting and auditing.

                      Where You Can Find More Information

    Level 3 files annual, quarterly and current reports, proxy statements and
other information with the SEC. We have also filed with the SEC a registration
statement on Form S-4 to register the new notes being offered in this
prospectus. This prospectus, which forms part of the registration statement,
does not contain all of the information included in the registration
statement. For further information about Level 3 and the new notes offered in
this prospectus, you should refer to the registration statement and its
exhibits.

    Our SEC filings are available to the public over the Internet at the SEC's
web site at http://www.sec.gov. You may also read and copy any document we
file at the SEC's public reference room at 450 Fifth Street, N.W., Washington,
D.C. 20549. These documents are also available at the public reference rooms
at the SEC's regional offices in New York, New York and Chicago, Illinois.
Please call the SEC at 1-800-SEC-0330 for further information on the public
reference rooms. Our SEC filings are also available at the offices of The
Nasdaq National Market, in Washington, D.C.

               Incorporation of Material Documents by Reference

    We are incorporating by reference in the prospectus the information we
file with the SEC. This means that we can disclose important information to
you by referring you to those documents. The information incorporated by
reference is an important part of this prospectus, and information that we
file later with the SEC will automatically update and supersede this
information. We are incorporating by reference our documents listed below and
any future filings we make with the SEC under Section 13(a), 13(c), 14 or
15(d) of the Securities Exchange Act of 1934 prior to the termination of this
Offering.

  .  Annual Reports on Form 10-K and Form 10-K/A for the fiscal year ended
     December 31, 1999;

  .  Quarterly Report on Form 10-Q for the quarter ended March 31, 2000; and

  .  Current reports on Forms 8-K, filed February 4, 2000, February 7, 2000,
     February 18, 2000, February 25, 2000 and February 29, 2000 and on Form
     8-K/A, filed November 9, 1999.

    You may request a copy of these filings at no cost, by writing or
telephoning us at the following address:

      Vice President, Investor Relations
      Level 3 Communications, Inc.
      1025 Eldorado Blvd.
      Broomfield, CO 80021
      (720) 888-2500

    You should rely only on the information incorporated by reference or
provided in this prospectus. We have not authorized anyone else to provide you
with different information. We are not making an offer of these securities in
any state where the offer is not permitted. You should not assume that the
information in this prospectus is accurate as of any date other than the date
on the front of those documents.

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  We have not authorized any person to give you any information or to make any
representations about the exchange offer other than those contained in this
prospectus. If you are given any information or representations that are not
discussed in this prospectus, you must not rely on that information or those
representations. This prospectus is not an offer to sell or a solicitation of
an offer to buy any securities other than the securities to which it relates.
In addition, this prospectus is not an offer to sell or the solicitation of an
offer to buy those securities in any jurisdiction in which the offer or
solicitation is not authorized, or in which the person making the offer or
solicitation is not qualified to do so, or to any person to whom it is unlawful
to make an offer or solicitation. The delivery of this prospectus and any
exchange made under this prospectus do not, under any circumstances, mean that
there has not been any change in the affairs of Level 3 since the date of this
prospectus or that information contained in this prospectus is correct as of
any time subsequent to its date.

[LEVEL 3 COMMUNICATIONS, INC. LOGO APPEARS HERE]

                          Level 3 Communications, Inc.

                           11% Senior Notes due 2008
                         11 1/4% Senior Notes due 2010
                     12 7/8% Senior Discount Notes due 2010

                               ----------------

                                   Prospectus

                               ----------------

                                  June 9, 2000

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