RCN CORP /DE/
S-3/A, 1999-05-04
TELEPHONE COMMUNICATIONS (NO RADIOTELEPHONE)
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       As filed with the Securities and Exchange Commission on May 4, 1999
                                                     Registration No. 333-71525
    

================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

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

   
                               AMENDMENT NO. 3 TO
                                    FORM S-3
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933
    

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


                                 RCN CORPORATION
             (Exact name of Registrant as specified in its charter)

               Delaware                                           22-3498533

       (State or jurisdiction of                               (I.R.S. Employer
    incorporation or organization)                           Identification No.)

                               105 Carnegie Center
                            Princeton, NJ 08540-6215
                                 (609) 734-3700

    (Address, including zip code, and telephone number, including area code,
                  of Registrant's principal executive offices)

                               John J. Jones, Esq.
                                 RCN Corporation
                               105 Carnegie Center
                            Princeton, NJ 08540-6215
                                 (609) 734-3700

            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)

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

                                    Copy to:
                              Julia K. Cowles, Esq.
                              Davis Polk & Wardwell
                              450 Lexington Avenue
                               New York, NY 10017
                                 (212) 450-4000

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

     Approximate date of commencement of proposed sale to the public: From time
to time after this Registration Statement becomes effective.

     If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box. |_|

     If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. |X|

     If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. |_|

     If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. |_|

     If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box.   |_|

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

     The Registrant hereby amends this Registration Statement on such date or
dates as may be necessary to delay its effective date until the Registrant shall
file a further amendment which specifically states that this Registration
Statement shall thereafter become effective in accordance with Section 8(a) of
the Securities Act of 1933 or until the Registration Statement shall become
effective on such date as the Commission, acting pursuant to said Section 8(a),
may determine.

================================================================================


<PAGE>

     The information in this prospectus is not complete and may be changed. We
may not sell these securities until the registration statement filed with the
Securities and Exchange Commission is effective. This prospectus is not an offer
to sell these securities and it is not soliciting an offer to buy these
securities in any state where the offer or sale is not permitted.

   
                    SUBJECT TO COMPLETION, DATED MAY 4, 1999
    

PROSPECTUS

                                     [LOGO]

                                 $1,000,000,000

                                 RCN Corporation

                 Common Stock, Preferred Stock, Debt Securities

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


     We may offer common stock, preferred stock or debt securities, and one of
our shareholders may offer up to 1,107,539 shares of our common stock, from
time to time. Specific terms of these securities will be provided in
supplements to this prospectus. You should read this prospectus and any
supplement carefully before you invest.

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


     Our common stock trades on the Nasdaq National Market under the symbol
"RCNC".

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


     Investing in these securities involves certain risks. See "Risk Factors"
beginning on page 8.

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


     Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of these securities, or determined if
this prospectus is truthful or complete. Any representation to the contrary is a
criminal offense.

   
                   The date of this prospectus is May 4, 1999
    

<PAGE>

     You should rely only on the information contained in or incorporated by
reference in this prospectus. We have not authorized anyone 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 contained in or incorporated by reference in this prospectus is
accurate as of any date other than the date on the front of this prospectus.

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



                                TABLE OF CONTENTS

                                                                      Page
                                                                     -----


Summary.......................................................................2
Risk Factors..................................................................8
Where You Can Find More Information..........................................14
Special Note on Forward-Looking Statements...................................14
Use of Proceeds..............................................................15
Dividends....................................................................15
Market Price and Dividend Information........................................15
Selected Historical Consolidated Financial Data..............................16
Unaudited Pro Forma Consolidated Statements of Operations....................18
Business.....................................................................22
Description of Capital Stock.................................................44
Description of Debt Securities...............................................49
Plan of Distribution.........................................................57
Legal Matters................................................................58
Experts......................................................................58

<PAGE>

                                     SUMMARY

     This summary may not contain all the information that may be important to
you. You should read the entire prospectus, including the financial data and
related notes, before making an investment decision.

     We are building high-speed, high-capacity advanced fiber optic networks in
selected markets with high levels of population density. Our strategy is to
become the leading single source provider of voice, video and data services to
residential customers in each of our markets by offering individual or bundled
service options, superior customer service and competitive prices. We are also
constructing our networks with significant excess capacity in order to
accommodate expanded services in the future.

     Our initial advanced fiber optic networks have been established in selected
markets in the Boston to Washington, D.C. corridors, which includes New York
City, and also in the San Francisco Bay area. In Boston and Washington, we
operate through joint ventures with Boston Edison Company and PEPCO
Communications, L.L.C., respectively. We are typically building the first true
local network to compete with the aging infrastructure of the incumbent service
providers in our markets.

     Because our network development plan involves relatively low fixed costs,
we are able to schedule capital expenditures to meet expected subscriber growth
in each major market. Our principal fixed costs in each such market are incurred
in connection with the establishment of a video transmission and telephone
switching facility. To make each market economically viable, it is then
necessary to construct infrastructure to connect a minimum number of subscribers
to the transmission and switching facility. We phase our market entry projects
to ensure that we have sufficient cash on hand to fund this construction.

     We have extensive operating experience in the telephone, video and Internet
industries and in the design, development and construction of telecommunications
facilities. As of December 31, 1998, we had approximately 855,000 total service
connections, including approximately 123,000 connections provided to customers
on our advanced fiber optic network.

Business Strategy

     Our goal is to become the leading provider of communication services to
residential customers in our target markets by pursuing the following key
strategies:

     o    Exploit the "Last Mile" Bottleneck in Existing Local Networks.
          Existing local networks are typically low capacity, single service
          facilities without the bandwidth for multiple or new services and
          revenue streams. We seek to be the first operator of an advanced fiber
          optic network offering advanced communications services to residential
          customers in our target markets.

     o    Continue Construction of Advanced Fiber Optic Networks. Our
          advanced fiber optic networks are designed with sufficient capacity to
          meet the growing demand for high speed, high capacity, voice, video
          and data services. Our networks also have a significant amount of
          excess capacity which will be available for the introduction of new
          products.

     o    Leverage our Network and Customer Base. We are able to leverage
          our network by delivering a broad range of communications products and
          by  focusing  on high  density  residential  markets.  This  bandwidth
          capacity and home density allows us to maximize the revenue  potential
          per mile of constructed network. We believe we can further exploit our
          network  capacity and  customer  base by  exploring  opportunities  to
          deliver  new   products   and   services  in  the  future,   including
          complementary commercial and wholesale products and services.

                                       2
<PAGE>

     o    Offer Bundled Voice, Video and Data Services with Quality
          Customer Service. By connecting customers to our own network, we
          improve our operating economics and have complete control over our
          customers' experience with us.

     o    Continue to Use Strategic Alliances. We have been able to enter
          markets quickly and efficiently and to reduce the up-front capital
          investment required to deploy our networks by entering into strategic
          alliances.

Connections

     Because we deliver a variety of services to our customers, we report the
total number of our various revenue generating service connections for local
telephone, video programming and Internet access. For example, a single customer
who purchases local telephone, video programming and Internet access counts as
three connections. The table below shows our growth in total connections and
growth in customers connected to advanced fiber optic networks, which we refer
to as "On-Net Connections".

<TABLE>

                                                                                As of
                                              ------------------------------------------------------------------------
                                               12/31/97         3/31/98        6/30/98         9/30/98        12/31/98
                                               --------         -------        -------         -------        --------
<S>                                              <C>             <C>            <C>             <C>             <C>
Total Connections:
   Voice...............................          28,114          44,950         60,480          78,950          95,890
   Video...............................         239,403         243,157        249,360         255,100         261,662
   Data................................             150         370,538        400,148         474,127         497,809
                                               --------        --------       --------        --------        --------
      Total............................         267,667         658,645        709,988         808,177         855,361
                                               --------        --------       --------        --------        --------
On-Net Connections.....................          15,148          20,339         48,212          82,842         123,393
Homes Passed...........................          44,045          63,386        122,977         213,983         304,505
Marketable Homes.......................              --              --        111,187         181,353         270,406
</TABLE>

     Our off-net connections are delivered through a variety of facilities
including hybrid fiber/coaxial cable systems and a wireless video system.

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


     Our principal executive offices are located at 105 Carnegie Center,
Princeton, New Jersey, 08540, and our telephone number is (609) 734-3700. We
maintain a website at www.rcn.com where general information about us is
available. We are not incorporating the contents of the website into this
prospectus.

                                       3
<PAGE>

                              About this Prospectus

     This prospectus is part of a registration statement that we filed with the
SEC utilizing a "shelf" registration process. Under this shelf process, we may
sell any combination of the securities described in this prospectus in one or
more offerings up to a total dollar amount of $1,000,000,000. This prospectus
provides you with a general description of the securities we may offer. Each
time we sell securities, we will provide a prospectus supplement that will
contain specific information about the terms of that offering. The prospectus
supplement may also add, update or change information contained in this
prospectus. You should read both this prospectus and any prospectus supplement
together with additional information described under the heading WHERE YOU CAN
FIND MORE INFORMATION.

                                  Risk Factors

     You should carefully consider all of the information in this prospectus
and, in particular, you should evaluate the specific risk factors set forth
under the caption "Risk Factors", beginning on page 8.

                                       4
<PAGE>

                 Summary Historical Consolidated Financial Data

     The table below sets forth our selected historical consolidated financial
data. We did not operate as an independent company prior to September 30, 1997.
Therefore, we had to make certain assumptions in preparing data for prior
periods, and the data may not reflect the results of operations or the financial
condition which would have resulted if we had operated as a separate,
independent company during those periods. The data also do not necessarily
indicate our future results of operations or financial condition.

     The selected historical consolidated financial data for the years ended
December 31, 1998, 1997 and 1996 and as of December 31, 1998 and 1997 are
derived from and should be read in conjunction with our audited historical
consolidated financial statements incorporated by reference to our report on
Form 10-K for the year ended December 31, 1998.

<TABLE>
                                                                   Year Ended December 31,
                                                           --------------------------------------
                                                             1996          1997            1998
                                                           --------    -----------     ----------
<S>                                                        <C>          <C>            <C>
Statement of Operations Data:
Total sales..............................................  $104,910     $  127,297     $  210,940
Costs and expenses, excluding depreciation
  and amortization.......................................    79,107        134,967        262,352
Nonrecurring charges.....................................        --         10,000             --
Acquired research and development........................        --             --         18,293
Depreciation and amortization............................    38,881         53,205         89,088
                                                           --------       --------     ----------
Operating (loss).........................................   (13,078)       (70,875)      (158,793)
Interest income..........................................    25,602         22,824         58,679
Interest expense.........................................   (16,046)       (25,602)      (112,239)
Other (expense) income, net..............................      (546)           131         (1,889)
(Benefit) provision for income taxes.....................       979        (20,849)        (4,998)
Equity in loss of unconsolidated entities................    (2,282)        (3,804)       (12,719)
Minority interest in loss of consolidated entities.......     1,340          7,296         17,162
Extraordinary charge- debt prepayment penalty, net
  of tax of $1,728.......................................        --         (3,210)            --
Cumulative effect of change in accounting for
  start-up costs, net of tax.............................        --             --           (641)
                                                           --------     ----------     ----------
Net (loss)...............................................  $ (5,989)    $  (52,391)    $ (205,442)
                                                           ========     ==========     ==========

Balance Sheet Data (at end of period):
Cash, temporary cash investments and short-term
   investments...........................................  $108,674     $  638,513     $1,012,574
Investments restricted for debt service..................        --         61,911         43,306
Total assets.............................................   628,085      1,150,992      1,907,615
Long-term debt (excluding current portion)...............   131,250        686,103      1,263,036
Shareholders' equity.....................................   390,765        356,584        371,446
Other Data:

EBITDA before nonrecurring charges.......................    25,803         (7,670)       (51,412)
Cash Provided by (Used in):
Operating Activities.....................................    23,831          2,069         35,110
Investing Activities.....................................    (9,377)      (475,860)      (828,176)
Financing Activities.....................................     9,391        634,858        690,282
</TABLE>

     In the table above:

     (1) Nonrecurring charges represent costs of $10,000 incurred in 1997 as a
result of the termination of a marketing services agreement related to our
wireless video services, and costs of $18,293 incurred in 1998 relating to
acquisition of in-process technology in connection with acquisitions.

                                       5
<PAGE>

     (2) EBITDA before nonrecurring charges represents earnings before interest,
depreciation and amortization, and income taxes. Because of the capital
intensive nature of the business and resulting large non-cash charges for
depreciation, EBITDA is commonly used in the communications industry by
management, investors, and analysts to analyze companies on the basis of
operating performance, leverage and liquidity. RCN intends to judge the success
of its initial rollout of fiber optic networks before deciding whether to
undertake additional capital expenditures to expand its network in new areas.
RCN believes that EBITDA is a critical measure of success. Because RCN is in a
growth-oriented and capital intensive phase of development, it incurs
depreciation and amortization charges in new markets which may obscure its
earnings growth in more mature markets. In addition, EBITDA provides a measure
of the availability of funds for various uses including repayment of debt,
expansion into new markets and acquisitions. EBITDA is not intended to represent
cash flows for the period and should not be considered as an alternative to cash
flows from operating, investing or financing activities as determined in
accordance with U.S. GAAP. EBITDA is not a measurement under U.S. GAAP and may
not be comparable with other similarly titled measures of other companies.
Certain of our debt agreements contain certain covenants that, among other
things, limit our and our subsidiaries' ability to incur indebtedness, pay
dividends, prepay subordinated indebtedness, repurchase capital stock, engage in
transactions with stockholders and affiliates, create liens, sell assets and
engage in mergers and consolidations. Certain of these covenants are based on
EBITDA performance measures.


                                       6
<PAGE>

                        Summary Pro Forma Financial Data

     The following unaudited summary pro forma financial data include
adjustments to our historical statements of operations for the year ended
December 31, 1998 as if each of the transactions described under "Unaudited Pro
Forma Consolidated Statements of Operations" on page 18 had occurred on the
first day of each of the periods listed below. These adjustments result
primarily from changes in our capital structure and accounting for the
acquisition of Erols Internet, Inc. The following unaudited pro forma financial
data are provided for your information only. You should not rely on the
unaudited pro forma financial data as an indication of the results of operation
and financial condition that would have been achieved if the transactions had
occurred on the dates we assumed. In addition, the unaudited pro forma financial
data do not necessarily indicate our future results of operations or financial
condition.

<TABLE>
                                                                                         Year Ended
                                                                                        December 31,
                                                                                            1998
                                                                                       ----------------
                                                                                          (dollars in
                                                                                           thousands)
<S>                                                                                    <C>
Statement of Operations Data:
Total sales........................................................................... $    214,269
Costs and expenses, excluding depreciation and amortization...........................      265,561
Nonrecurring acquisition costs: In-process technology.................................       18,293
Depreciation and amortization.........................................................       90,918
                                                                                       ------------
Operating (loss)......................................................................     (160,503)
Interest income.......................................................................       58,679
Interest expense......................................................................     (124,374)
Other (expense), net..................................................................       (1,894)
                                                                                       ------------
(Loss) before income taxes............................................................     (228,092)
(Benefit) for income taxes............................................................       (4,998)
(Loss) before equity in unconsolidated entities and minority interest.................     (223,094)
Equity in loss of unconsolidated entities.............................................      (15,406)
Minority interest in loss of consolidated entities....................................       17,162
                                                                                       ------------
(Loss) before cumulative effect of change in accounting principle.....................$    (221,338)
                                                                                      =============
Other Data:
EBITDA before nonrecurring charge and acquired research and development............... $    (51,292)
</TABLE>


     In the table above, "EBITDA" before nonrecurring charges represents
earnings before interest, depreciation and amortization, and income taxes.
EBITDA is commonly used in the communications industry to analyze companies on
the basis of operating performance, leverage and liquidity. RCN intends to judge
the success of its initial rollout of fiber optic networks before deciding
whether to undertake additional capital expenditures to expand its network in
new areas. RCN believes that EBITDA is a critical measure of success. Because
RCN is in a growth-oriented and capital intensive phase of development, it
incurs depreciation and amortization charges in new markets which may obscure
its earnings growth in more mature markets. In addition, EBITDA provides a
measure of the availability of funds for various uses including repayment of
debt, expansion into new markets and acquisitions. EBITDA is not intended to
represent cash flows for the period and should not be considered as an
alternative to cash flows from operating, investing or financing activities as
determined in accordance with U.S. GAAP. EBITDA is not a measurement under U.S.
GAAP and may not be comparable with other similarly titled measures of other
companies.

                                       7
<PAGE>

                                  RISK FACTORS

     You should carefully consider each of the following risks and all of the
other information set forth in this prospectus before deciding to invest in our
securities. Some of the following risks relate principally to our business in
general and the industry in which we operate. Other risks relate principally to
the securities markets and ownership of our securities. The risks and
uncertainties described below are not the only ones facing our company.
Additional risks and uncertainties not presently known to us or that we
currently believe to be immaterial may also adversely affect our business.

     If any of the following risks and uncertainties develop into actual events,
our business, financial condition or results of operations could be materially
adversely affected. In such case, the trading price of our securities could
decline, and you may lose all or part of your investment.

     This prospectus contains forward-looking statements that involve risks and
uncertainties. Our actual results could differ materially from those anticipated
in these forward-looking statements as a result of certain factors, including
the risks faced by us described below and elsewhere in this prospectus.

We have a limited operating history and have incurred negative cash flow and
operating losses

     We have only recently begun operating a voice, video and data services
business. Accordingly, you will need to evaluate our performance based on a
limited operating history. In connection with entering this business, we have
incurred operating and net losses and negative cash flows and expect to continue
to do so for the next five to seven years as we expand our network and customer
base. Whether we continue to have negative cash flow in the future will be
affected by a variety of factors including:

          o our pace of entry into new markets;
          o the time and expense required for constructing our fiber optic
            network as we planned;
          o our success in marketing services;
          o the intensity of competition; and
          o the availability of additional capital to pursue our business plans.

     We had operating losses after depreciation and amortization and
nonrecurring charges of $158,793,000, $70,875,000 and $13,078,000 for the years
ended December 31, 1998, 1997 and 1996. We can not assure you that we will
achieve or sustain profitability or positive cash flows from operating
activities in the future.

Additional growth will require additional capital, and our total capital needs
may be substantial

     We expect that we will require substantial additional capital to expand the
development of our network and operations into new areas. We will need capital
to fund the construction of our advanced fiber optic networks, upgrade our
hybrid fiber/coaxial plant and fund operating losses and pay our debts. Based on
our current growth plan, we currently estimate that our capital requirements for
the period from January 1, 1999 through 2000 will be approximately $1.8 billion,
which include capital expenditures of approximately $700 million in 1999 and
approximately $1 billion in 2000. These capital expenditures do not include
amounts our joint venture partners contribute to the Boston and Washington, D.C.
joint ventures. We are obligated to pay our portion of any capital contributions
required by the joint ventures' annual budget or capital contribution schedule.
If our joint venture partner(s) fail to make anticipated capital contributions,
it could have a material adverse effect on our business. See "Business--Network
Development and Financing Plan."

     We may seek additional sources of funding from vendor financing, public
offerings or private placements of equity and/or debt securities, and bank
loans. We cannot assure you that additional financing will be available to us
or, if available, that it can be obtained on a timely basis and on acceptable
terms. If we fail to obtain such

                                       8
<PAGE>

financing, it could result in the delay or curtailment of our development and
expansion plans and expenditures and could have a material adverse effect on our
business.

     Our estimates of capital requirements are forward-looking statements that
are subject to change. The actual timing and amount of capital required to
develop our network and to fund operating losses may vary materially from our
estimates if there are significant departures from the current business plan,
unforeseen delays, cost overruns, engineering design changes or other
unanticipated expenses or occurrences.

Our substantial indebtedness limits our business flexibility

     We have indebtedness that is substantial in relation to our shareholders'
equity and cash flow. As of December 31, 1998, we had an aggregate of
approximately $1,267 million of indebtedness outstanding. As a result of our
substantial indebtedness, fixed charges are expected to exceed earnings for the
foreseeable future, and our operating cash flow may not be sufficient to pay
principal and interest on our various debt securities. The extent of our
leverage may also have the following consequences:

          o    limit our ability to obtain necessary financing in the
               future for working capital, capital expenditures, debt service
               requirements or other purposes;

          o    require that a substantial portion of our cash flows from
               operations be dedicated to paying principal and interest on our
               indebtedness and therefore not be available for other purposes;

          o    limit our flexibility in planning for, or reacting to, changes
               in our business;

          o    place us at a competitive disadvantage as compared with our
               competitors who do not have as much debt; and

          o    render us more vulnerable in the event of a downturn in our
               business.

     Our outstanding debt securities contain customary covenants limiting our
flexibility, including covenants limiting our ability to incur additional debt,
make liens, make investments, consolidate, merge or acquire other businesses and
sell assets, pay dividends and other distributions, make capital expenditures
and enter into transactions with affiliates.

Our holding company structure structurally subordinates our creditors, including
holders of our debt securities

     We are a holding company with limited assets that conducts substantially
all of our operations through subsidiaries and joint ventures. The securities
will be solely our obligations and no other entity has any obligation,
contingent or otherwise, to make any payments under the securities. Accordingly,
we will be dependent on dividends and other distributions from subsidiaries and
joint ventures to pay off our obligations, including the principal and interest
on debt securities that may be issued by means of this prospectus. The ability
of our subsidiaries and joint ventures to pay dividends to us will be subject to
the terms of their debt instruments and applicable law. In addition, our joint
ventures require our consent and the consent of our joint venture partner to
distribute or advance funds to us. Claims of holders of the debt securities will
be effectively junior in priority to the debt and other liabilities and
commitments of our subsidiaries and joint ventures. Our interest in the joint
ventures will be limited to the extent of our direct or indirect equity interest
in the joint ventures. Consequently, in the event our subsidiaries or joint
ventures become insolvent, liquidate, reorganize, dissolve or otherwise wind up
their business, our creditors' claims will be junior to the prior claims of
those entities' creditors, including trade creditors, and any prior or equal
claim of any joint venture partner. Any distributions of our equity interests in
our non-wholly owned subsidiaries or in joint ventures may be expected to be
made on an equal basis to all equity holders. We expect that a majority of our
cash flow in the advanced fiber optic network business will ultimately be
derived from our joint venture investments. The indenture under which the debt
securities will be issued will permit substantial indebtedness to be incurred by
our subsidiaries and joint ventures. The indenture does not, except under
limited circumstances, require our subsidiaries to guarantee the debt
securities. In addition, the indenture will

                                       9
<PAGE>

permit our subsidiaries and joint ventures to become parties to debt instruments
that limit these entities' ability to pay dividends or make distributions to us.

We may not be able to manage our growth or integrate our acquisitions

     The expansion and development of our operations, including the construction
and development of additional networks, will depend on several factors,
including our ability to:

          o     access markets,
          o     design fiber optic network backbone routes,
          o     install or lease fiber optic cable and other facilities,
                including switches, and
          o     obtain rights-of-way, building access rights
                and any government authorizations, franchises and
                permits,

all in a timely manner, at reasonable costs and on satisfactory terms and
conditions.

     In addition to the markets we are presently developing, we continually
evaluate other potential markets. These markets may be within the Boston to
Washington, D.C. corridor or in non-contiguous areas. As is the case in our
present markets, we intend to evaluate potential markets in terms of population
density and favorable demographics, and to apply a strategy of building network
facilities to meet the needs of targeted subscribers in new markets. We cannot
assure you that we will be able to expand our existing network or to identify
and develop new markets. Furthermore, our ability to manage our expansion
effectively will also require us to continue to implement and improve our
operating and administrative systems and attract and retain qualified management
and professional and technical personnel. If we are not able to manage our
planned expansion effectively, it could have a material adverse effect on our
business.

     We recently announced our intention to begin developing advanced fiber
optic networks in selected high density markets outside of the Boston to
Washington, D.C. corridor, initially in the San Francisco Bay Area. Our proposed
expansion into non-contiguous markets could place additional strain on
management resources. Furthermore, although we believe that our experience in
the Northeast will provide us with strategic advantages in developing new
markets, we cannot assure you that our experience in our current markets will be
replicated in the western United States.

     We have experienced significant growth through acquisitions and will
continue to consider acquisition opportunities that arise from time to time.
Acquisitions may place a significant strain on our resources, and we may incur
additional expenses during the integration of the acquired company with our
business. For instance, the process of integrating the Internet service provider
businesses we acquired in 1998 may take a significant period of time and require
significant expenditure, including costs to upgrade the systems and internal
controls of these businesses. As a result, we cannot assure you that we will be
able to integrate these businesses successfully or in a timely manner.

Our business is dependent upon acceptance of fiber optic technology as the
platform of choice

     The telecommunications industry has been and will continue to be subject to
rapid and significant changes in technology. The effect of technological changes
on our business  cannot be  predicted,  and we cannot  assure you that the fiber
optic  technology  that  we use  will  not  be  supplanted  by new or  different
technologies. See "Business--Competition."


                                       10
<PAGE>

We are dependent on our strategic relationships and joint ventures

     We have entered into a number of strategic alliances and relationships
which allowed us to enter into the market for telecommunications services
earlier than if we had made the attempt independently. As our network is further
developed, we will be dependent on some of these arrangements to provide a full
range of telecommunications service offerings. Our key strategic relationships
include:

          o    our arrangements with MFS Communications Company, Inc. (a
               subsidiary of WorldCom, Inc.) to lease portions of MFS/WorldCom's
               fiber optic network in New York City and Boston;

          o    our joint venture with Boston Edison Company under which we
               have access to its extensive fiber optic network in Greater
               Boston;

          o    our joint venture with Pepco Communications to develop and
               operate an advanced fiber optic network in the Washington, D.C.
               market; and

          o    our agreement with Level 3 to provide us with access to its
               cross-country fiber network.

     Our joint venture agreements with Boston Edison Company and Pepco
Communications contain provisions for the management, governance and ownership
of the RCN-BECOCOM and Starpower joint ventures, respectively. Certain matters
require the approval of our joint venture partner, including some matters beyond
our control, such as a change of control. In addition, although certain
covenants contained in our indentures apply to the joint venture companies,
neither the joint venture companies nor our joint venture partners are parties
to these indentures and are not bound to comply with the indentures. A
disagreement with our joint venture partners over certain business actions,
including actions related to compliance with these indentures, could impede our
ability to conduct our business. It may also trigger deadlock provisions in the
joint venture agreements which could force us to sell our interest in the
relevant joint venture or buy out the interest of the other joint venturer. See
"Business --Strategic Relationships and Facilities Agreements."

     In addition, any disruption of our relationships or arrangements with
incumbent local exchange carriers, such as Bell Atlantic, could have a material
adverse effect on our company. We cannot assure you that we will successfully
negotiate agreements with the incumbent local exchange carrier in new markets or
renew existing agreements. Our failure to negotiate or renew required
interconnection and resale agreements could have a material adverse effect on
our business.

We may encounter difficulties in competing in the highly competitive
telecommunications industry

     In each of the markets where we offer our services, we face significant
competition from larger, better-financed telephone carriers and cable companies.
Virtually all markets for voice, video and data services are extremely
competitive, and we expect that competition will intensify in the future. Our
principal competitors include:

     o    traditional and competitive telephone companies, including Bell
          Atlantic, AT&T, Sprint, and MCI WorldCom, some of which are
          constructing extensive fiber optic networks and expanding into data
          services;

     o    cable television service operators such as Time Warner, some of
          which are beginning to offer telephone and data services through cable
          networks using fiber optic networks and high-speed modems;

     o    established online services, such as America Online and Internet
          services of other telecommunications companies;

                                       11
<PAGE>

     o    alliances and combinations of telephone companies, cable service
          providers and Internet companies, including the recently announced
          alliance that will combine services of AT&T, TCI and At Home; and

     o    developing technologies such as Internet-based telephony and
          satellite communications services.

It may be difficult to gain customers from the incumbent providers which have
historically dominated their markets.

     Other new technologies may become competitive with services that we offer.
Advances in communications technology as well as changes in the marketplace and
the regulatory and legislative environment are constantly occurring. In
addition, a continuing trend toward business combinations and alliances in the
telecommunications industry may also create significant new competitors. We
cannot predict the extent to which competition from such developing and future
technologies or from such future competitors will impact our operations. See
"Business --Competition".

Our business plan depends upon continued application of regulations that have
been challenged in the past

     Our ability to provide telephone and video programming transmission
services was made possible by important changes in government regulations which
have been subsequently challenged and may be subject to change in the future.
These regulations often have a direct or indirect impact on the costs of
operating our networks, and therefore the profitability of our services. In
addition, we will continue to be subject to other regulations at the federal,
state and local levels, all of which may change in the future. We cannot assure
you that we will be able to obtain all of the authorizations we need to
construct advanced fiber optic network facilities or to retain the
authorizations we have already acquired. It is possible that changes in existing
regulations could have an adverse impact on our ability to obtain or retain
authorizations and on our business. See "Business--Regulation."

We may not be able to procure programming services from the third parties we
depend on

     Our video programming services are dependent upon our management's ability
to procure programming that is attractive to our customers at reasonable
commercial rates. We are dependent upon third parties for the development and
delivery of programming services. These programming suppliers charge us for the
right to distribute the channels to our customers. The costs to us for
programming services is determined through negotiations with these programming
suppliers. Management believes that the availability of sufficient programming
on a timely basis will be important to our future success. We cannot assure you
that we will have access to programming services or that management can secure
rights to such programming on commercially acceptable terms.

The expansion of our Internet services business has subjected us to additional
risks

     The expansion of our Internet services business has subjected us to
additional risks. These risks will affect our ability to develop a profitable
Internet services business. These special factors include:

     o    evolving industry standards which have the potential to make our
          services obsolete by replacing or providing lower-cost alternatives to
          our services;

     o    constraints on server capacity or supply of equipment (such as
          modems and servers) which could result in a strain on incoming access
          lines, causing busy signals and/or delays for our subscribers;

     o    network infrastructure and risk of system failure, such as
          viruses, which could lead to interruptions, delays, or cessation of
          our services, as well as corruption of our or our subscribers'
          computer systems;

     o    possible claims of liability against us as a result of computer
          viruses or security breaches; and

                                       12
<PAGE>

     o   the evolving competitive and regulatory environment concerning
         Internet services.

Our management may have conflicts of interest with other companies

     Level 3 Telecom beneficially owns approximately 46% of our common stock.
Level 3 Telecom effectively has the power to elect a majority of our directors
and to decide the outcome of substantially all matters voted on by shareholders.
This may tend to deter non-negotiated tender offers or other efforts to obtain
control of our company and thereby deprive shareholders of opportunities to sell
shares at prices higher than the prevailing market price. Moreover, a
disposition by Level 3 Telecom of a significant portion of our common stock, or
the perception that such a disposition may occur, could affect the trading price
of our common stock and the control of our company. The common stock of Level 3
Telecom is owned 90% by Level 3 and 10% by David C. McCourt, our Chairman and
Chief Executive Officer. Mr. McCourt has been a member of the Board of Directors
and President of Level 3 Telecom since September 1992. Based upon a review of
documents filed with the SEC, we believe that as of December 31, 1998, 16.1% of
the common stock of Level 3 was owned by directors and executive officers of
Level 3, five of whom (Walter Scott, Jr., Richard R. Jaros, David C. McCourt,
James Q. Crowe and Michael B. Yanney) are executive officers or directors of
RCN. The remaining shares of Level 3 common stock are owned by other persons,
none of whom own more than 5% of outstanding shares.

     As a result of the September 30, 1997 spin-off of our shares to holders of
common equity of Commonwealth Telephone Enterprises, Inc., relationships exist
that may lead to conflicts of interest. Level 3 Telecom effectively controls
both us and Commonwealth Telephone. In addition, the majority of our named
executive officers are also directors and/or executive officers of Commonwealth
Telephone. Our success may be affected by the degree which our officers and
directors are involved in our business and the abilities of officers, directors
and employees in managing both our company and Commonwealth Telephone. We will
deal with potential conflicts of interest on a case-by-case basis taking into
consideration relevant factors including the requirements of The Nasdaq National
Market and prevailing corporate practices.

     In February 1999, we announced that we have entered into joint construction
agreements with Level 3. We also recently announced that we have entered into a
letter of intent with Level 3 for Level 3 to provide us with cross-country
capacity to allow our customers to connect to major internet connection points
in the United States. Although these arrangements are designed to reflect
similar arrangements entered into by parties negotiating at arm's length, we
cannot assure you that we would not be able to obtain better terms from an
unrelated third party.

The price of our securities may fluctuate significantly following any offering

     Prior to an offering, there has been no public market for the debt
securities and the preferred stock. We cannot assure you that any market will
develop for the debt securities or the preferred stock. After we issue
securities, they may trade at prices that are higher or lower than your purchase
price. The trading price for our securities will depend on prevailing interest
rates, the market for similar securities and other factors, including economic
conditions and our financial condition, performance and prospects. In
particular, the prices of non-investment grade securities historically have been
highly volatile. We cannot assure you that the future market for our debt
securities will not be subject to similar volatility.

                                      13
<PAGE>

                      WHERE YOU CAN FIND MORE INFORMATION

     We file annual, quarterly and special reports, proxy statements and other
information with the SEC. You may read and copy any document that we file at the
Public Reference Room of the SEC at 450 Fifth Street, NW, Washington, D.C.
20549. You may obtain information on the operation of the Public Reference Room
by calling the SEC at 1-800-SEC-0330. You may also inspect our filings at the
regional offices of the SEC located at Citicorp, 500 West Madison Street, Suite
1400, Chicago, Illinois 60661 and 7 World Trade Center, New York, New York 10048
or over the Internet at the SEC's WEB site at http://www.sec.gov.

     The SEC allows us to "incorporate by reference" the information we file
with them, which 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 incorporate
by reference the documents listed below and any future filings made with the SEC
under Sections 13(a), 13(c), 14, or 15(d) of the Securities Exchange Act of 1934
until we sell all of the securities:

      (a)  Current Report on Form 8-K dated May 8, 1998;

      (b) Current Report on Form 8-K dated March 19, 1999; and

      (c) Annual Report on Form 10-K for the year ended December 31, 1998.

     You may request a copy of these filings at no cost, by writing or
telephoning the office of Valerie Haertel, RCN Corporation, 105 Carnegie Center,
Princeton, N.J. 08540-6215, telephone number (609) 734 -3700.

                  SPECIAL NOTE ON FORWARD-LOOKING STATEMENTS

     This prospectus includes forward-looking statements. We have based these
forward-looking statements on our current expectations and projections about
future events. These forward-looking statements are subject to risks,
uncertainties, and assumptions about our business, including, among other
things:

          o    plans to develop networks and upgrade facilities;

          o    opportunities presented by target markets;

          o    plans to connect certain wireless video, resale telephone
               and Internet service customers to advanced fiber optic networks;

          o    development of existing businesses; o current and future
               markets for services and products; o anticipated capital
               expenditures;

          o    impact of the Year 2000 issue; o anticipated sources of capital;
               and

          o    effects of regulatory reform and competitive and technological
               developments.

     We have no obligation to publicly update or revise any forward-looking
statements, whether as a result of new information, future events or risks. New
information, future events or risks may cause the forward-looking events we
discuss in this prospectus not to occur.

                                      14
<PAGE>

                                USE OF PROCEEDS

     Unless otherwise indicated in a prospectus supplement, the net proceeds
from the sale of the securities will be used to fund our network development,
operating losses and for general corporate purposes.

                                   DIVIDENDS

     We anticipate that future revenues will be used principally to support
operations and finance business growth. Accordingly, we do not intend to declare
or pay cash dividends in the foreseeable future. Our Board of Directors has the
discretion to declare or pay any cash dividends in the future. Their decision to
declare any dividends and the amount of any dividends will depend on a number of
factors, including our financial condition, capital requirements, funds from
operations, future business prospects and any other factor that they may deem
relevant. We are a holding company and our ability to pay cash dividends is
dependent on our ability to receive cash dividends, advances and other payments
from our subsidiaries. Our credit agreement contains restrictions on our
subsidiaries' ability to pay dividends. In addition, we have entered into
indentures in connection with our debt securities which also restrict our and
certain of our subsidiaries' ability to pay dividends. See "Management's
Discussion and Analysis of Financial Condition and Results of Operations" in our
10-K for the year ended December 31, 1998.

                     MARKET PRICE AND DIVIDEND INFORMATION

     Our common stock (symbol: "RCNC") currently trades on the Nasdaq National
Market.

     The following table sets forth the high and low bid prices per share of
the common stock on the Nasdaq National Market and cash dividends declared on
the common stock since September 30, 1997:




                                                    Common stock
                                     -----------------------------------------
                                         Market Price($)              Cash
                                     -----------------------       Dividends
                                      High             Low         Declared($)
                                     --------        -------       ----------
1997

Quarter ending September 30.....     15 11/16        10 9/16           0
Quarter ending December 31......     21 1/2          12 1/2            0

1998
Quarter ending March 31.........     30 5/8          15 7/8            0
Quarter ending June 30..........     29 3/8          19 1/4            0
Quarter ending September 30.....     24 5/16         12 3/8            0
Quarter ending December 31......     25               8 3/4            0

1999
Quarter ending March 31.........     39 3/4          17 3/4            0

     Our common stock was distributed on September 30, 1997 to holders of record
of the common stock of Commonwealth Telephone Enterprises, Inc. on September 19,
1997. Accordingly, market price and dividend information have only been set
forth in the table above for the quarter ending September 30, 1997 and
subsequent periods. Information for the quarter ending September 30, 1997
reflects the partial period between September 19, 1997 through September 30,
1997.

   
     The last reported sale price per share of our common stock on April 30,
1999, the last practicable date prior to the filing of this prospectus, was
$48.625.
    

     On March 31, 1998, there were approximately 2,800 holders of common stock.
On March 31, 1998, 66,522,888 shares of common stock were outstanding.

                                      15
<PAGE>

                SELECTED HISTORICAL CONSOLIDATED FINANCIAL DATA

     The table below sets forth our selected historical consolidated financial
data. Prior to September 30, 1997, we operated as part of C-TEC Corporation. The
historical consolidated financial data presented below reflect periods during
which we did not operate as an independent company. Accordingly, we had to make
certain assumptions to reflect the results of operations or the financial
condition which would have resulted if we had operated as a separate,
independent company during the periods listed below. You should not rely on the
historical consolidated financial data as an indication of our results of
operation and financial condition that would have been achieved if we had
operated as a separate, independent company during the periods listed below. The
historical consolidated financial data also do not necessarily indicate our
future results of operation or financial condition.

     The selected historical consolidated financial data for the year ended
December 31, 1994 and as of December 31, 1994 are derived from our unaudited
historical consolidated financial statements not included in this prospectus.
The selected historical consolidated financial data as of December 31, 1995 are
derived from our audited historical consolidated financial statements not
included in this prospectus. The selected historical consolidated financial data
for the year ended December 31, 1995 and as of December 31, 1996 are derived
from and should be read in conjunction with our audited historical consolidated
financial statements incorporated by reference to our 10-K for the year ended
December 31, 1997. The selected historical consolidated financial data for the
years ended December 31, 1998, 1997 and 1996 and as of December 31, 1998 and
1997 are derived from and should be read in conjunction with our audited
historical consolidated financial statements incorporated by reference to our
10-K for the year ended December 31, 1998. See "Management's Discussion and
Analysis of Financial Condition and Results of Operations" in our 10-K for the
year ended December 31, 1998.


<TABLE>
                                                                      Year Ended December 31,
                                             ---------------------------------------------------------------------
                                                  1994          1995          1996         1997          1998
                                             -------------  -------------- ----------  ------------   ------------
<S>                                         <C>           <C>            <C>                  <C>     <C>

Statement of Operations Data:

Sales                                        $     59,500   $     91,997   $  104,910  $    127,297   $    210,940
Costs and expenses, excluding depreciation
   and amortization.........................       49,747         75,003       79,107       134,967        262,352
Nonrecurring charges........................           --             --           --        10,000             --
Acquired research and development...........           --             --           --            --         18,293
Depreciation and amortization...............        9,803         22,336       38,881        53,205         89,088
                                             ------------   ------------   ----------  ------------   ------------
Operating (loss)............................          (50)        (5,342)     (13,078)      (70,875)      (158,793)
Interest income.............................       21,547         29,001       25,602        22,824         58,679
Interest expense............................      (16,669)       (16,517)     (16,046)      (25,602)      (112,239)
Other (expense) income, net.................        1,343           (304)        (546)          131         (1,889)
(Benefit) provision for income taxes........        2,340          1,119          979       (20,849)        (4,998)
Equity in loss of unconsolidated entities...           --         (3,461)      (2,282)       (3,804)       (12,719)
Minority interest in loss (income) of
   consolidated entities....................          (95)          (144)       1,340         7,296         17,162
Extraordinary charge- debt prepayment
   penalty, net of tax of $1,728............           --             --           --        (3,210)            --
Cumulative effect of changes in accounting
   principles...............................          (83)            --           --            --           (641)
Net (loss) income........................... $      3,653   $      2,114   $   (5,989)  $   (52,391)  $   (205,442)
                                             ============   ============   ==========   ===========   ============
Ratio of earnings to fixed charges..........         1.36           1.41         0.75       (1.87)         (0.91)
Deficiency of earnings to fixed charges.....          N/A            N/A          N/A$      (73,522)$     (214,242)
Balance Sheet Data (at end of period):

Total assets................................ $    568,586 $      649,610   $  628,085  $  1,150,992 $    1,907,615
Long-term debt excluding current portion....      154,000        135,250      131,250       686,103      1,263,036
Shareholders' equity........................      372,847        394,069      390,765       356,584        371,446
Other Data:

EBITDA before nonrecurring charges..........        9,753         16,994       25,803        (7,670)       (51,412)


                                      16

<PAGE>
                                                                      Year Ended December 31,
                                             ---------------------------------------------------------------------
                                                  1994          1995          1996         1997          1998
                                             -------------  -------------- ----------  ------------   ------------
<S>                                         <C>           <C>            <C>                  <C>     <C>
Cash Provided by (Used in):
Operating Activities........................        6,193         48,559       23,831         2,069         35,110
Investing Activities........................     (140,152)      (146,203)      (9,377)     (475,860)      (828,176)
Financing Activities........................      280,014        (31,203)       9,391       634,858        690,282
</TABLE>

     In the table above:

     (1) Nonrecurring charges represent costs of $10,000 incurred in 1997 the
termination of a marketing services agreement related to our wireless video
services, and costs of $18,293 incurred in 1998 relating to acquisition of
in-process technology in connection with the acquisitions.

     (2) The deficiency of earnings to fixed charges is based on income from
continuing operations and has been computed on a total enterprise basis.
Earnings represent income before income taxes, and fixed charges. Fixed charges
consist of interest expense and debt amortization costs.

     (3) EBITDA before nonrecurring charges represents earnings before interest,
depreciation and amortization, and income taxes. Because of the capital
intensive nature of the business and resulting large non-cash charges for
depreciation, EBITDA is commonly used in the communications industry by
management, investors, and analysts to analyze companies on the basis of
operating performance, leverage and liquidity. RCN intends to judge the success
of its initial rollout of fiber optic networks before deciding whether to
undertake additional capital expenditures to expand its network in new areas.
RCN believes that EBITDA is a critical measure of success. Because RCN is in a
growth-oriented and capital intensive phase of development, it incurs
depreciation and amortization charges in new markets which may obscure its
earnings growth in more mature markets. In addition, EBITDA provides a measure
of the availability of funds for various uses including repayment of debt,
expansion into new markets and acquisitions. EBITDA is not intended to represent
cash flows for the period and should not be considered as an alternative to cash
flows from operating, investing or financing activities as determined in
accordance with U.S. GAAP. EBITDA is not a measurement under U.S. GAAP and may
not be comparable with other similarly titled measures of other companies.
Certain of our debt agreements contain certain covenants that, among other
things, limit our and our subsidiaries' ability to incur indebtedness, pay
dividends, prepay subordinated indebtedness, repurchase capital stock, engage in
transactions with stockholders and affiliates, create liens, sell assets and
engage in mergers and consolidations.

                                       17
<PAGE>

            UNAUDITED PRO FORMA CONSOLIDATED STATEMENTS OF OPERATIONS

     Prior to September 30, 1997, RCN was operated as part of C-TEC. The
following unaudited pro forma consolidated statements of operations set forth
the historical statements of operations of RCN for the year ended December 31,
1998 and as adjusted for the following:

     o     RCN's acquisition of Erols in February 1998;

    o     RCN's February 1998 issuance and sale of its 9.80% Senior Discount
          Notes due 2008 (the "9.80% Notes"); and

     o    RCN's June 1998 issuance and sale of 6,098,355 shares of Common
          Stock (the "Stock Offering") and its 11% Senior Discount Notes due
          2008 (the "11% Notes").

and the related transactions and events described in the notes thereto, as if
such transactions and events had been consummated on the first day of 1998.

     Management believes that the assumptions used provide a reasonable basis on
which to present such unaudited pro forma statements of operations. The
unaudited pro forma statements of operations should be read in conjunction with
the financial statements and "Management's Discussion and Analysis of Financial
Condition and Results of Operations" in our 10-K for the year ended December 31,
1998.

     The unaudited pro forma statements of operations are provided for
information purposes only and should not be construed to be indicative of RCN's
results of operations had the spin-off and the transactions and events described
above been consummated on the dates assumed, may not reflect the results of
operations or financial condition which would have resulted had RCN been
operated as a separate, independent company during such period, and are not
necessarily indicative of RCN's future results of operations or financial
condition.

<PAGE>


                                 RCN CORPORATION
            UNAUDITED PRO FORMA CONSOLIDATED STATEMENT OF OPERATIONS
                          Year Ended December 31, 1998
         ($ in thousands, except per share amounts and number of shares)


<TABLE>

                                                                              Erols                     Adjustments
                                                                            Historical                 for the Stock
                                                            Adjustments      1/1/98 -    Acquisition    Offering and
                                                 RCN       for the 9.8%       2/28/98    Adjustments      the 11%
                                              Historical       Notes            (2)       For Erols        Notes        Pro Forma
                                              ----------   -------------    ----------   -----------   -------------   -----------
<S>                                           <C>          <C>              <C>          <C>           <C>              <C>
Sales.........................................$  210,940                     $ 8,700       $(5,371)(3)                 $   214,269
Cost and expenses excluding
   depreciation and amortization..............   262,352                       8,388        (5,179)(3)                     265,561
Nonrecurring acquisition costs:
   In-process technology......................    18,293                                                                    18,293
Depreciation and amortization ................    89,088                       1,478           352 (4)                      90,918
                                              ----------     ---------       -------       -------         --------    -----------
Operating (loss)..............................  (158,793)                     (1,166)         (544)             --        (160,503)
Interest income...............................    58,679                                                                    58,679
Interest expense..............................  (112,239)    $  (3,492)(1)      (164)           101        $ (8,580)(6)   (124,374)

Other (expense), net..........................    (1,889)                        (5)                                        (1,894)
                                              ----------     ---------       -------       -------         --------    -----------
(Loss) before income taxes....................  (214,242)       (3,492)       (1,335)         (443)          (8,580)      (228,092)
(Benefit) for income taxes....................    (4,998)              (1)       --             -- (5)                      (4,998)
                                              ----------     ---------       -------       -------         --------    -----------
(Loss) before equity in unconsolidated
   entities and minority interest.............  (209,244)       (3,492)       (1,335)         (443)          (8,580)      (223,094)
Equity in (loss) of unconsolidated
   entities...................................   (12,719)                                  (2,687)(3)                      (15,406)
Minority interest in loss of
   consolidated entities......................    17,162                                                                    17,162
                                              ----------     ---------       -------       -------         --------    -----------
Loss before cumulative effect of change
   in accounting principle....................$ (204,801)    $  (3,492)      $(1,335)      $(3,130)        $ (8,580)   $ (221,338)
                                              ==========     =========       =======       =======         ========    ===========

Unaudited pro forma loss per average common
   share before cumulative effect of change
   in accounting principle....................$    (3.35)    $                                                         $     (3.62)
Weighted average number of common shares and
   common stock equivalents outstanding.......61,187,354                                                                61,187,354


            See Notes to Unaudited Pro Forma Statement of Operations

</TABLE>


                                      19


<PAGE>



                                 RCN CORPORATION
       NOTES TO UNAUDITED PRO FORMA CONSOLIDATED STATEMENT OF OPERATIONS
                             (dollars in thousands)

     The Unaudited Pro Forma Consolidated Statement of Operations assumes that
RCN was an autonomous entity rather than a wholly owned subsidiary of C-TEC
for the periods shown. The pro forma adjustments, as described below, are
keyed to the corresponding amounts shown in the relevant statement.

     (1) Adjustment to reflect interest expense and amortization of debt
issuance costs related to the issuance of the 9.8% Notes aggregating $3,492
for the year ended December 31, 1998. A pro forma adjustment was not assumed
for income tax benefits associated with the pro forma adjustment for
additional interest expense for the year ended December 31, 1998 because the
realization of such benefit would be uncertain.

     (2) On February 20, 1998, RCN completed the acquisition of Erols,
Washington, D.C.'s largest Internet service provider. RCN accounted for this
transaction under the purchase method of accounting and accordingly, the
financial statements of Erols are not consolidated with RCN's historical
financial statements as of and for the year ended December 31, 1997. In 1998,
the financial results of Erols also are not consolidated with RCN's historical
financial statements for the period prior to February 20, 1998. The financial
information relating to Erols was provided by Erols.

     A summary of the transaction is as follows:

Cash paid (including out of pocket expenses of
     approximately $1,400 and repayment of debt of
     approximately $5,100)...........................$   36,000
Fair value of RCN stock issued.......................    45,000
Fair value of stock options exchanged................    11,000
Liabilities assumed..................................    55,000
                                                     ----------
Fair value of assets acquired........................$  147,000
                                                     ==========


   The fair value of assets acquired was allocated as follows:


In-process technology................................$   13,228
Property, plant & equipment..........................    19,100
Current assets.......................................     2,280
Other assets.........................................     3,800
                                                     ----------
Intangible assets:                                                Estimated
                                                                    Useful
                                                                 Life (months)
                                                                 -------------

   
     Customer base...................................    15,000     48
     Acquired current products/technologies..........    49,224     48
     Goodwill........................................    41,115     48
     Tradename.......................................     3,253
                                                     ----------     13
                                                     $  147,000
                                                      =========
    


     (3) Such adjustments include a pro forma allocation of historical
operating results of Erols to the joint venture with Pepco Communications (see
below) based upon the relationship of the number of subscribers contributed to
the joint venture to the total number of subscribers acquired in the merger.
RCN's share of such operating results, including the depreciation and
amortization effects of the allocation of a portion of the total purchase
price to the joint venture, representing the agreed upon value of the
subscribers to be contributed to the joint venture, are included in the
adjustment for "equity in (loss) of unconsolidated entities."


                                      20

<PAGE>

     A subsidiary of RCN is a party to a joint venture with a subsidiary of
Pepco Communications, to provide the greater Washington, D.C. area residents and
businesses local and long-distance telephone, cable television, and Internet
services as a package from a single source. As a result of this joint venture,
RCN contributed to the joint venture the subscribers acquired in the merger with
Erols which are located in the relevant joint venture market. This represents
approximately 62% of the customer base acquired from Erols. The value of such
contribution as agreed to by the joint venture partners was $51,937.
Additionally, Starpower assumed the liability for the unearned revenue related
to the subscribers contributed to the joint venture of $26,663. A summary of
related amounts transferred to the joint venture is as follows:

Property, plant and equipment..................... $        11,900
Customer base.....................................           9,300
Trade name........................................           2,060
Goodwill..........................................          55,340
Unearned revenue..................................         (26,663)
                                                   ---------------
Net investment in joint venture................... $        51,937
                                                   ===============


     (4) Such adjustment reflects the change in depreciation and amortization
for the effect of the fair value adjustment of the net assets of Erols acquired.
RCN allocated the purchase price for Erols (see Note 2) on the basis of the fair
market value of the assets acquired and liabilities assumed.

     (5) A pro forma adjustment was not assumed for income tax benefits
associated with the pro forma adjustments for the historical results of
operations of Erols because the realization of such benefit would be uncertain.

     (6) Adjustment to reflect interest expense and amortization of debt
issuance costs related to the issuance of the 11% Notes aggregating $8,580 for
the year ended December 31, 1998. Pro forma adjustments were not assumed for
income tax benefits associated with the pro forma adjustments for additional
interest expense because the realization of such benefits would be uncertain.

                                       21
<PAGE>

                                    BUSINESS

Overview

     We are building high-speed, high-capacity advanced fiber optic networks in
selected markets with high levels of population density. Our current services
include local and long distance telephone, video programming and data services,
including high speed Internet access. Our strategy is to become the leading
single-source provider of voice, video and data services to residential
customers in each of our markets by offering individual or bundled service
options, superior customer service and competitive prices. We are also
constructing our networks with significant excess capacity in order to
accommodate expanded services in the future. We intend to expand the services
provided to our customers through strategic alliances and opportunistic
development of complementary products. In addition, we will use the excess
capacity in our fiber optic networks to provide services to commercial customers
located on or near our networks. As a result of recent acquisitions and internal
growth, we are a leading regional Internet service provider in the Boston to
Washington, D.C. corridor. Our Internet businesses have recently been integrated
under the brand name "RCN.com."

     Our initial advanced fiber optic networks have been established in selected
markets in the Boston to Washington, D.C. corridor, including New York City, and
the San Francisco Bay area. We are typically building the first true local
network to compete with the aging infrastructure of the incumbent service
providers in our markets. In the Boston market we operate our advanced fiber
optic network through a joint venture with Boston Edison Company. We own and
manage 51% owned of the venture and it is accounted for on a consolidated basis.
In the Washington, D.C. market, we are developing an advanced fiber optic
network through a joint venture named Starpower with Pepco Communications,
L.L.C., an indirect wholly owned subsidiary of Potomac Electric Power Company.
We own 50% of Starpower and Pepco Communications owns 50% and it is accounted
for under the equity method of accounting. We believe that these joint ventures
provide us with a number of important advantages. For example, we are able to
access rights of way of our joint venture partners and use their existing fiber
optic facilities. This allows us to enter our target markets quickly and
efficiently and to reduce our up-front costs of developing our networks. In
addition, our joint venture partners provide us with additional assets, equity
capital and established customer bases. We also benefit from our relationship
with our largest shareholder, Level 3 Communications, Inc., and from the
experience gained by certain of our key employees who participated in the
operation and development of other telephone, cable television and business
ventures, including MFS Communications Company, Inc.

     Because we deliver a variety of services, we report the total number of our
various service connections purchased for local telephone, video programming and
Internet access rather than the number of customers. For example, a single
customer who purchases local telephone, video programming and Internet access
counts as three connections. Because we view long distance as a complementary
product, we do not currently include customers of our long distance service as
connections. See "--RCN Services--Connections." As of December 31, 1998, we had
approximately 855,000 connections which were delivered through a variety of our
owned and leased facilities including hybrid fiber/coaxial cable systems, a
wireless video system and advanced fiber optic networks. As of that date, we had
approximately 123,000 total connections attributable to customers connected to
advanced fiber optic networks ("on-net" connections) and had approximately
732,000 connections attributable to customers served through other facilities
("off-net" connections). See "--RCN Services." We obtained approximately 370,000
of our 497,000 Internet service connections through acquisitions of subscriber
bases during 1998. See "--Recent Acquisition Transactions."

     We have extensive operating experience in both the telephone and video
industries and in the design and development of telecommunications facilities.
Our experience provides us with expertise in systems operation and development,
and gives us an established infrastructure for customer service and billing for
both voice and video services and established relationships with suppliers of
equipment and video programming. In addition, our management team and board of
directors benefit from experience gained when they managed C-TEC, which prior to
September 30, 1997 owned and operated our company. C-TEC has over 100 years of
experience in the

                                       22
<PAGE>

telephone business and nearly 25 years of experience in the cable television
business. Both C-TEC and certain members of management also have extensive
experience in the design and development of advanced telecommunications
facilities.

     We seek to exploit competitive opportunities in selected markets where
population density, favorable demographics and the aging infrastructure of the
incumbent service providers' network facilities combine to create a particularly
attractive opportunity to develop advanced fiber optic networks. We continue to
construct network facilities within the Boston to Washington, D.C. corridor. We
believe that our experience in the Northeast will provide us with a key
strategic advantage as we enter markets in the San Francisco to San Diego
corridor.

West Coast Expansion

     We recently began to develop advanced fiber optic networks in selected high
density markets outside of the Boston to Washington, D.C. corridor. Our initial
west coast network is being developed in the San Francisco Bay Area, which is
densely populated and has high per capita income and the highest per capita
Internet usage in the United States. We have received competitive local exchange
carrier ("CLEC") status in California. We have also obtained an "open video
system" ("OVS") certification from the Federal Communications Commission for the
City of San Francisco and surrounding counties and have begun to develop our
network in the San Francisco Bay Area. We expect to expand into selected markets
in or near Southern California. As is the case in our existing markets, we
intend to focus on high density markets with favorable demographics, and to
apply a subscriber-driven investment strategy. We expect to begin offering
services in the San Francisco Bay Area in late 1999.

Business Strategy

     Our goal is to become the leading provider of communications services to
residential customers in our target markets by pursuing the following key
strategies:

     Exploit the "Last Mile" Bottleneck in Existing Local Networks: Existing
local networks are typically low capacity, single service facilities without the
bandwidth for multiple or new services and revenue streams. Investment in the
local network or "last mile" has not generally kept pace with other industry and
technological advances. In our target markets, we seek to be the first operator
of an advanced fiber optic network offering advanced communications services to
residential customers.

     Continue Construction of Advanced Fiber Optic Networks: Our advanced fiber
optic networks are designed with sufficient capacity to meet the growing demand
for high speed, high capacity, voice, video and data services. Our networks also
have a significant amount of excess capacity at relatively low incremental cost
which will be available for the introduction of new products. We believe that
our high capacity advanced fiber optic networks provide us with certain
competitive advantages such as the ability to offer bundled services and the
opportunity to recover the cost of our network through multiple revenue streams.
In addition, our networks generally provide superior signal quality and network
reliability relative to the typical networks of the incumbent service providers.

     Leverage our Network and Customer Base: We are able to leverage our network
by delivering a broad range of communications products and by focusing on high
density residential markets. This bandwidth capacity and home density allows us
to maximize the revenue potential per mile of constructed network. We believe we
can further exploit our network capacity and customer base by exploring
opportunities to deliver new products and services in the future, including
complementary commercial and wholesale products and services.

     Offer Bundled Voice, Video and Data Services with Quality Customer Service:
We offer our customers a single-source package of competitively priced voice,
video and data services, individually or on a bundled basis, with quality
customer service. By connecting customers to our own network, we improve our
operating economics and have complete control over our customers' experience
with us. We believe that the combination of bundled


                                       23
<PAGE>

communications services and quality customer care that we provide is superior to
services that are typically available from most incumbent telephone, cable or
other service providers.

     Continue to Use Strategic Alliances: We have been able to enter markets
quickly and efficiently and to reduce the up-front capital investment required
to deploy our networks by entering into strategic alliances with companies such
as BECO, Pepco Communications, Level 3, Qwest and MCI/WorldCom. By establishing
relationships with these companies, we are able to take advantage of their
existing extensive fiber optic networks and other assets, and our own existing
cable television infrastructure, to expedite and reduce the cost of market entry
and business development. We will continue to evaluate other strategic alliances
in our existing markets and our developing markets.

Network Development and Financing Plan

     Because our network development plan involves relatively low fixed costs,
we are able to schedule capital expenditures to meet expected subscriber growth
in each major market. Our principal fixed costs in each such market are incurred
in connection with the establishment of a video transmission and telephone
switching facility. To make each market economically viable, it is then
necessary to construct infrastructure to connect a minimum number of subscribers
to the transmission and switching facility. We phase our market entry projects
to ensure that we have sufficient cash on hand to fund this construction.

     Based on our current growth plan, we expect that we will require
substantial additional capital to expand the development of our network and
operations into new areas within our larger target markets. We will need capital
to fund the construction of our advanced fiber optic networks, upgrade our
hybrid fiber/coaxial plant and fund operating losses and repay our debts. We
currently estimate that our capital requirements for the period from January 1,
1999 through 2000 will be approximately $1.8 billion, which include capital
expenditures of approximately $700 million in 1999 and approximately $1 billion
in 2000. These capital expenditures will be used principally to fund additional
construction of our fiber optic network in high density areas in the Boston, New
York City, Washington, D.C. and San Francisco Bay area markets as well as to
expand into new markets (including selected markets in the western United
States) and to develop our information technology systems. These estimates are
forward-looking statements that may change if circumstances related to
construction, timing of receipt of regulatory approvals and opportunities to
accelerate the deployment of our networks do not occur as we expect. In addition
to our own capital requirements, our joint venture partners are each expected to
contribute approximately $275 million (of which $120 million has been
contributed) to the joint ventures through 2000 in connection with development
of the Boston and Washington, D.C. markets.

     In order to facilitate growth beyond 2000, we expect to supplement our
existing available credit facilities and operating cash flow by seeking
additional capital to increase our network coverage and pay for other capital
expenditures, working capital, debt service requirements and anticipated further
operating losses. We may seek additional sources of funding from vendor
financing, public offerings or private placements of equity and/or debt
securities, and bank loans.

     In March 1999, we secured a $1 billion bank facility from The Chase
Manhattan Bank and sold $250 million of convertible preferred stock to a private
investment fund.

RCN Services

     We provide a wide range of local and long distance telephone, video
programming and data services, both individually and in bundled service options.

     We provide these services through a range of facilities including our
advanced fiber optic networks in New York City, Boston and Washington D.C., a
wireless video system in New York City, our hybrid fiber/coaxial cable


                                       24
<PAGE>



systems in the states of New York (outside New York City), New Jersey and
Pennsylvania. We also provide, on a limited basis, resale local and long
distance telephony services.

     Connections. The following table summarizes the development of our
subscriber base:

<TABLE>

                                                                               As of
                                              -------------------------------------------------------------------------
                                              9/30/97      12/31/97     3/31/98      6/30/98       9/30/98     12/31/98
                                              -------      --------     -------      -------       -------     --------
<S>                                           <C>          <C>          <C>          <C>           <C>         <C>
On-Net Service Connections:
   Voice...............................        1,909         3,214       4,473        11,428       20,857        30,868
   Video...............................        4,870        11,784      15,599        35,196       58,324        86,349
   Data................................          326           150         267         1,588        3,661         6,176
                                             -------       -------     -------       -------      -------       -------
Subtotal On-Net........................        7,105        15,148      20,339        48,212       82,842       123,393

   
Off-Net Service Connections:
   Voice...............................       10,953        24,900      40,447        49,052       58,093        65,022
   Video...............................      229,198       227,619     227,558       214,164      196,776       175,313
   Data................................           --            --     370,271       398,560      470,466       491,633
                                             -------       -------     -------       -------      -------       -------
    

Subtotal Off-Net.......................      240,151       252,519     638,276       661,776      725,335       731,968
                                             -------       -------     -------       -------      -------       -------
Total Service Connections..............      247,256       267,667     658,615       709,988      808,177       855,361
                                             =======       =======     =======       =======      =======       =======
Homes Passed...........................       26,083        44,045      63,386       122,977      213,983       304,505
Marketable Homes.......................           --            --          --       111,187      181,353       270,406

</TABLE>

     Because we deliver a variety of services to our customers, we account for
our customer activity by the number of individual local telephone, video
programming or Internet access services, or "connections," purchased.
Consequently, a single customer purchasing local telephone, video programming
and Internet access counts as three connections.

     We classify connections in the "Off-Net" category until the relevant
facilities are capable of providing voice, video and data services, including
local telephone service, through an RCN switch. During 1998, our Allentown,
Pennsylvania system was upgraded to provide a full range of services, and the
customers on that system were moved to the "On-Net" connections category.

     "Off-Net--Voice" figures in the table above represent resold local phone
service provided to customers not connected to the advanced fiber optic
networks.

     Our "Off-Net--Video" figures in the table above include approximately
31,000 wireless connections and wireline video connections serving the
University of Delaware (4,000 connections at December 31, 1998).

   
     As of December 31, 1998 we had approximately 186,000 homes passed and
approximately 140,000 basic subscribers connected to our hybrid fiber/coaxial
cable system in New York, New Jersey and Lehigh Valley service areas.

     In areas served by our joint ventures in the Greater Boston and Washington,
D.C. areas, the subscribers are customers of the relevant joint venture and are
included in the connections set forth in the table above.

     As of September 30, 1998, we began to report marketable homes, which
represents that segment of homes passed which are being marketed our entire line
of advanced fiber optic network products. The distinction between homes passed
and marketable homes recognizes our transition from constructing our network in
initial markets to providing services to customers that have ordered our
services.
    

     Set forth below is a brief description of our services:

                                       25

<PAGE>

     Voice. We offer full-featured local exchange telephone service, including
standard dial tone access, enhanced 911 access, operator services and directory
assistance. We compete with the incumbent local exchange providers and CLECs. In
addition, we offer a wide range of value-added services, including call
forwarding, call waiting, conference calling, speed dial, calling card,
800-numbers and voice mail. We also provide Centrex service and associated
features. Our local telephone rates are generally competitive with the rates
charged by the incumbent providers. At December 31, 1998, we had approximately
30,900 telephone service connections on our advanced fiber optic networks and
approximately 65,000 customers for resold telephone service. We also provide
long distance telephone services, including outbound, inbound, calling card and
operator services. These services are offered to residential and business
customers.

     Video Services. We offer a diverse line-up of high quality basic, premium
and pay-per-view video programming. Depending on the system, we offer from 61 to
147 channels. Our basic video programming package provides extensive channel
selection featuring all major cable and broadcast networks. Our premium services
include HBO, Cinemax, Showtime and The Movie Channel, as well as supplementary
channels such as HBO 2, HBO 3 and Cinemax 2. StarCinema, available on our
advanced fiber optic networks, uses the latest "impulse" technology allowing
convenient impulse pay-per-view ordering of the latest hit movies and special
events instantly from the customer's remote. "Music Choice" offers 30 different
commercial-free music channels delivered to the customer's stereo in digital CD
quality sound.

     As of December 31, 1998, we had approximately 86,350 subscribers for our
video programming services provided over advanced fiber optic networks. As of
such date, we also had approximately 34,900 connections attributable to the
wireless video system and approximately 140,400 connections attributable to the
hybrid fiber/coaxial cable systems.

     Internet Access and Data Transmission. We operate as an Internet service
provider under the RCN.com brand name. We focus on serving individuals and
businesses through a network of our-owned points of presence ("POPs") which are
connected to our advanced fiber optic network. Our primary service offerings are
56K dial-up and high-speed cable modem access. We also sell commercially
oriented private line point-to-point data transmission services such as DS-1 and
OC-3 and a range of web page and server hosting services. Our subscribers use
their RCN accounts to communicate, retrieve information, and publish information
on the Internet. Following the recent acquisitions described below under
"--Recent Acquisition Transactions", we believe that we are the largest regional
provider of Internet services in the Northeast United States. As of December 31,
1998, we had approximately 497,800 Internet subscribers.

Migration of Customers to Advanced Fiber Networks

     We provide wireless video services to customers located near our advanced
fiber optic network in New York City and Internet services to acquired
subscribers. We have also actively marketed resold telephone service in the
past. Our goal is to extend our advanced fiber optic network to service many of
those customers. As our advanced fiber optic network is extended into these
areas or buildings, customers receiving wireless video service in New York City
are switched to the advanced fiber optic network from the wireless video
network. The wireless video equipment is then used to provide service to other
customers in off-network premises. Similarly, as the advanced fiber optic
network is developed, voice and data customers are switched to the advanced
fiber optic network from resale accounts. The switch to our network allows us to
gain additional revenue and higher margins from originating and terminating
access fees and to control the related services and service quality.

Strategic Relationships and Facilities Agreements

     We have entered into a number of strategic alliances and relationships
which allow us to enter into the telecommunications services market early,
reduce the cost of entry into our markets and tap management expertise. We
expect to continue to pursue potential opportunities from entering into
strategic alliances to facilitate network expansion and entry into new markets.

                                       26
<PAGE>

     BECO Joint Venture

     In 1996 RCN and the Boston Edison Company ("BECO"), through wholly owned
subsidiaries, formed a joint venture to use 126 fiber miles of BECO's fiber
optic network to deliver our comprehensive communications package in Greater
Boston. A joint venture agreement provided for the organization and operation of
RCN-BECOCOM, LLC, an unregulated entity with a term expiring in the year 2060.
RCN-BECOCOM is a Massachusetts limited liability company organized to own and
operate an advanced fiber optic telecommunications network and to provide, in
the market in and around Boston, Massachusetts, voice, video and data services.
Through RCN Telecom Services of Massachusetts, we own 51% of the equity interest
in RCN-BECOCOM and BECO, through a subsidiary, owns the remaining 49% interest.
This joint venture with BECO is reflected on our financial statements on a
consolidated basis.

   
     Pursuant to an exchange agreement between BECO and RCN, BECO has the right,
from time to time, to convert portions of its ownership interest in RCN-BECOCOM
into shares of our common stock. In February 1999, BECO exercised this right and
converted a portion of its interest into 1,107,539 shares of our common stock.
This conversion reduced BECO's current ownership interest in RCN-BECOCOM to
45.74% and increased our current ownership interest to 54.26%. Future capital
contributions to the joint venture will continue to be made 49% by BECO and 51%
by RCN until BECO disposes of the shares it received on the conversion. The
capital contribution percentages will change in proportion to BECO's future
disposal of the shares. The exchange agreement also provided BECO with rights to
demand that RCN register such stock or to allow BECO to participate in
underwritten offerings of our common stock.
    

     We expect to benefit from our ability to use BECO's large fiber optic
network, its focus on innovative technology, its sales and marketing expertise
and its reach into the market. In the future, the venture may expand into energy
management and property monitoring services. Starting in Boston, the joint
venture partners have expanded into surrounding markets, including Arlington,
Somerville and Newton. As a result of our access to the extensive BECO network,
our reliance on and use of MFS/WorldCom facilities in Boston has been reduced
significantly.

     Starpower Joint Venture

     In 1997, RCN Telecom Services, Inc., one of our subsidiaries, and Potomac
Capital Investment Corporation ("PCI"), a wholly owned subsidiary of Potomac
Electric Power Company, formed a joint venture to own and operate a
communications network to provide voice, video, data and other communications
services to residential and commercial customers in the greater Washington,
D.C., Virginia and Maryland area. Starpower is an unregulated limited liability
company with a perpetual term. Starpower was formed to construct, own, lease,
operate and market a network for the selling of voice, video, data and other
telecommunications services to all potential commercial and residential
customers in the Washington, D.C. market covered by the joint venture contract.
We own 50% of the equity interest in Starpower and Pepco Communications owns the
remaining 50% interest. Starpower is reflected on our financial statements under
the equity method of accounting.

     Other Strategic Relationships

     On April 7, 1999, Hicks, Muse, Tate & Furst Incorporated, through HM4 RCN
Partners, purchased $250 million of a new issue of convertible preferred stock
of RCN in a private placement transaction. In connection with this transaction,
we agreed to provide the purchaser with the right to appoint one director to
RCN's Board of Directors for so long as it owns at least 50% of its initial
investment. Michael J. Levitt, a partner of Hicks, Muse, has been appointed to
RCN's Board of Directors in connection with this agreement.

                                       27
<PAGE>

     Miscellaneous Facilities Agreements

     We have also entered into agreements which have helped us accelerate
network development, including Fiber Agreements entered into with MFS/WorldCom.
MFS/WorldCom owns or has the right to use certain fiber optic network facilities
in the Boston, Massachusetts and New York City markets. Under the Fiber
Agreements, MFS/WorldCom agreed to construct and provide extensions connecting
the fiber optic facilities to buildings we designated. We are also able to use
certain dedicated fibers in those facilities, except that we may not use the
facilities to deliver telephone services to commercial customers.

     In February 1999, we announced that we have entered into joint construction
agreements with Level 3. The agreements will allow us to deploy additional
network in Boston and New York faster and at a lower cost. We also recently
announced that we have entered into a letter of intent with Level 3 for Level 3
to provide us with cross-country capacity to allow our customers to connect to
major Internet connection points in the United States. This gives us the ability
to negotiate peering agreements that will allow the exchange of traffic as a
Tier I operator.

     In June 1998, we entered into an agreement with Qwest Communications for
Qwest to provide us with capacity in its regional backbone of fiber lines to
connect to our local networks from Boston to Washington, D.C.

Recent Acquisition Transactions

     In February 1998, we acquired Erols. The total approximate consideration
was $36.0 million in cash, including out of pocket costs of approximately $1.4
million and the assumption and repayment of debt of approximately $5.1 million,
and RCN common stock with a fair value at the time of issuance of approximately
$45.0 million. The purchase price also included approximately $11.0 million
representing the fair value of Erols stock options which were converted to RCN
stock options in connection with the acquisition.

     RCN contributed approximately 60% of the subscribers and related unearned
revenue acquired in the acquisition of Erols to Starpower and approximately 1%
to RCN-BECOCOM.

     In February 1998, we acquired Ultranet Communications, Inc. The total
approximate consideration was $7.7 million in cash, including cash payments
aggregating approximately $.5 million to certain holders of Ultranet stock
options, and RCN common stock with a fair value at the time of issuance of
approximately $26.2 million. The purchase price also included approximately $1.9
million representing the fair value of Ultranet stock options which were
converted to RCN stock options in connection with the acquisition.

     RCN contributed to RCN-BECOCOM approximately 30% of the subscribers
acquired in the acquisition of Ultranet.

     In the allocation of purchase price associated with the acquisition of
Erols and Ultranet, $13.2 million and $5.1 million, respectively, was determined
to represent acquired in-process research & development ("IPR&D"). In
particular, four projects which qualified as IPR&D were identified as not having
achieved technological feasibility and representing technology which, at the
time of acquisition, offered no alternative use than the defined project. For
both the Erols and the Ultranet acquisitions, we identified the research and
development projects to include--

     o    Cable Modem Internet access for subscribers, consisting of
          projects to develop the hardware, systems and software to permit
          subscribers to be offered high-speed Internet access through direct
          cable connection. The remaining development effort is concerned with
          technical standards for this service and with the design and
          integration of this product into our cable and fiber optic network.

     o    Internet Telephony, representing projects to develop the
          potential for dial-up telephone service through the Internet. This
          service area required that significant technical challenges as well as
          political, commercial and market challenges be faced before service
          could be offered to subscribers. At the date of


                                       28
<PAGE>

          acquisition, neither hardware nor systems had been acquired or
          developed in support of this new product and, as a result, a high
          degree of development activity remains.

     o    E-Commerce Systems, consisting of efforts to develop a suitable
          system that would permit subscribers to conduct commercial activities
          over the Internet. Following evaluation of commercially-available
          packages, none were capable of meeting subscriber needs and
          development of the suitable system was undertaken.

     o    High-speed shared office Internet access, representing a blending
          of fiber optic and Internet networking technologies, was under
          development as a package to be offered to commercial clients. While
          the technical challenges were still being addressed at the date of
          acquisition, there was no certainty that this system would result in a
          competitive product offering in the market.

     In June 1998, we acquired Interport Communications Corp. The total
approximate consideration for the transaction was $1.3 million in cash and RCN
common stock with a fair value at the time of issuance of approximately $8.5
million.

     In June 1998, we also acquired Lancit Media Entertainment, Ltd., a producer
of high quality children's programming. The total approximate consideration for
the transaction was $.4 million in cash and RCN common stock with a fair value
at the time of issuance of approximately $7.4 million.

     In July 1998, we acquired Javanet, Inc. The total approximate consideration
for the transaction was $3.7 million in cash and RCN common stock with a fair
value at the time of issuance of approximately $13.4 million.

     RCN contributed to RCN-BECOCOM approximately 6% of the subscribers acquired
in the acquisition of Javanet.

International

     We own a 40.0% interest in Megacable, the second largest cable television
provider in Mexico. Megacable owns 22 wireline cable systems in Mexico,
principally on the Pacific and Gulf coasts and including Guadalajara, the second
largest city in Mexico, Hermosillo, the largest city in the state of Sonora and
Veracruz, the largest city in the state of Veracruz. At December 31, 1998, their
wireline systems passed approximately 733,500 homes and served approximately
222,300 subscribers. Megacable had revenues of $37.5 million and $30.4 million
for the years ended December 31, 1998 and 1997, respectively.

     Additionally, Megacable presently holds a 99% interest in Megacable
Comunicaciones de Mexico S.A. ("MCM"). MCM has received a license from the
Mexican government to allow it to build a fiber optic network in Mexico City,
Monterrey and Guadalajara. MCM intends to use this network to provide local
voice and high-speed data service in these cities, principally to commercial
customers in Mexico City.

Competition

     Overview

     We compete with a wide range of service providers for each of our services.
Virtually all markets for voice and video services are extremely competitive,
and we expect that competition will intensify in the future. We face significant
competition in each of the markets in which we offer voice and video programming
services. Our competitors are often larger, better-financed incumbent local
telephone carriers and cable companies with better access to capital resources,
and many have historically dominated their local telephone and cable television
markets. These incumbents presently have numerous advantages as a result of
their historic monopolistic control of their respective markets, economies of
scale and scope and control of limited conduit and pole space. They also

                                       29
<PAGE>

have well-established customer and vendor relationships. However, we believe
that most existing and potential competitors will, at least initially, offer
narrower services over limited delivery platforms compared to the wide range of
voice, video and data services that we provide over our fiber-based networks.
This gives us an opportunity to achieve important market penetration.

     We compete with the incumbent Local Exchange Carriers ("LECs") for the
provision of local telephone services, as well as with alternative service
providers including CLECs. Cable operators are also entering the local exchange
market in some locations. Other sources of competitive local and long distance
telephone services include: Commercial mobile radio services providers,
including cellular carriers (such as Bell Atlantic Mobile Services); personal
communications services carriers such as Sprint PCS; and enhanced specialized
mobile radio services providers (such as NexTel).

     We face, and expect to continue to face, significant competition for long
distance telephone services from the inter-exchange carriers ("IXCs"), including
AT&T, Sprint and MCI WorldCom, which account for the majority of all U.S. long
distance revenue. The major long distance service providers benefit from
established market share and from established trade names through nationwide
advertising. However, we regard our long-distance service as a complementary
service rather than a principal source of revenue. Certain IXCs, including AT&T,
MCI WorldCom and Sprint, have also announced their intention to offer local
services in major U.S. markets using their existing infrastructure in
combination with resale of incumbent LEC service, lease of unbundled local loops
or other providers' services. Internet-based telephony, a potential competitor
for low cost telephone service, is also developing and we are also pursuing this
technology.

     All of our video services face competition from alternative methods of
receiving and distributing television signals and from other sources of news,
information and entertainment. Other sources include off-air television
broadcast programming, newspapers, movie theaters, live sporting events,
interactive online computer services and home video products, including
videotape cassette recorders. Alternative video distribution technologies
include traditional cable networks, wireless local video distribution
technologies, and home satellite dish ("HSD") earth stations. Home satellite
systems enable individual households to receive many of the satellite-delivered
program services formerly available only to cable subscribers. The Cable
Television Consumer Protection and Competition Act of 1992 (the "1992 Act")
contains provisions, which the FCC has implemented with regulations, to enhance
the ability of cable competitors to purchase and make available to HSD owners
certain satellite-delivered cable programming at competitive costs. We face
additional competition from private satellite master antenna television
("SMATV") systems that serve condominiums, apartment and office complexes and
private residential developments. The FCC and Congress have adopted policies
providing a more favorable operating environment for new and existing
technologies that compete, or may compete, with our various video distribution
systems. These technologies include, among others, Direct Broadcast Satellite
("DBS") service whereby signals are transmitted by satellite to receiving
facilities located on customer premises. We expect that our video programming
services will face growing competition from current and new DBS service
providers. The FCC has recently determined that DBS is the fastest-growing
competitor to franchised cable operations. We also compete with wireless program
distribution services such as Multi-Channel Multi-Point Distribution Service
which use low-power microwave frequencies to transmit video programming
over-the-air to subscribers.

     The Internet access market is extremely competitive and highly fragmented.
Competition in this market is expected to intensify. Our current and prospective
competitors include established online services; local, regional and national
ISPs; national and international telecommunications companies including Regional
Bell Operating Companies ("RBOCs") such as Bell Atlantic; and affiliates of
incumbent cable providers. Increased competition may create downward pressure on
the pricing of and margins from Internet access services.

     Other new technologies, including Internet-based services, may compete with
services that we can offer. Advances in communications technology as well as
changes in the marketplace and the regulatory and legislative environment are
constantly occurring. Thus, we cannot predict the effect that ongoing or future
developments might have on the voice, video and data industries or on our
operations or financial condition.

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     We believe that among the existing competitors, the incumbent LECs,
incumbent cable providers and the CLECs are most of our competitors in the
delivery of "last mile" connections for voice and video services.

     Incumbent LECs

     In each of our target markets for advanced fiber optic networks, we face,
and expect to continue to face, significant competition from the incumbent LECs.
The incumbent LECs include Bell Atlantic in the Northeast Corridor, and Pacific
Bell in California, both of which currently dominate their local telephone
markets. We compete with the incumbent LECs in our markets for local exchange
services on the basis of product offerings, including the ability to offer
bundled voice and video service, reliability, state-of-the-art technology and
superior customer service, as well as price. We believe that our advanced fiber
optic networks provide superior technology for delivering high-speed,
high-capacity voice, video and data services compared to the incumbent LECs'
primarily copper wire based networks. However, the incumbent LECs have
long-standing relationships with their customers. They have also begun to expand
the amount of fiber facilities in their networks, to offer broadband digital
transmission services and retail Internet access, and to prepare to re-enter the
long distance telephone service market. The pending merger between Bell Atlantic
and GTE Corporation may enhance the combined entity's ability to compete with us
in the Northeast corridor markets. The pending merger between SBC and Ameritech
may also increase competitive pressures in the Northeast corridor if SBC, which
already owns a Connecticut incumbent LEC and several wireless franchises in this
region, continues to pursue a nationwide strategy.

     Under the Telecommunications Act of 1996 (the "1996 Act"), and ensuing
federal and state regulatory initiatives, barriers to local exchange competition
are being slowly removed. The introduction of such competition, however, also
establishes the predicate for the RBOCs, such as Bell Atlantic, to provide
in-region interexchange long distance services. The RBOCs are currently allowed
to offer "incidental" long distance service in-region and to offer out-of-region
long distance service. Once the RBOCs are allowed to offer in-region long
distance services, they will also be in a position to offer single source local
and long distance service similar to what we offer and proposed by the three
largest IXCs: AT&T, MCI/WorldCom and Sprint. We expect that the increased
competition made possible by regulatory reform will result in certain pricing
and margin pressures in the telecommunications services business.

     We have sought, and will continue to seek, to provide a full range of local
voice services which compete with incumbent LECs in our service areas. We expect
that competition for local telephone services will be based primarily on
quality, capacity and reliability of network facilities, customer service,
response to customer needs, service features and price, and will not be based on
any proprietary technology. Our new advanced fiber optic networks employ dual
backbone architecture and state-of-the-art technology and, as a result, we may
have capital cost and service quality advantages over some of the networks of
the incumbent LECs. We may also have a competitive advantage because we are able
to deliver a bundled voice and video service.

     The 1996 Act permits the incumbent LECs and others, with which we compete,
to provide a wide variety of video services directly to subscribers. Various
LECs currently are providing video services within and outside their telephone
service areas through a variety of distribution methods, including both the
deployment of broadband wire facilities and the use of wireless transmission
facilities. We cannot predict the likelihood of success of video service
ventures by LECs or the impact such competitive ventures may have on us. Some
LECs, including Bell Atlantic, also offer Internet access services that compete
with our services.

     Incumbent Cable Television Service Providers

     Certain of our video service businesses compete with incumbent wireline
cable companies in their respective service areas. In particular, our advanced
fiber optic networks compete for cable subscribers with the major wireline cable
operators in our markets, such as Time-Warner Cable in New York City,
Cablevision in Boston and TCI in Washington, D.C. Our wireless video service in
New York City competes primarily with Time-Warner Cable. We believe that the
expanded capacity and fiber-to-node architecture of our advanced fiber optic
networks

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make us better equipped to provide high-capacity communications services than
traditional coaxial cable based networks using "tree and branch" architecture.
Our Lehigh Valley, Pennsylvania hybrid fiber/coaxial cable television system
competes with an alternate service provider, Service Electric, which also holds
a franchise for the relevant service area.

     Cable television systems generally operate pursuant to franchises granted
on a non-exclusive basis, and the 1992 Act prohibits franchising authorities
from unreasonably denying requests for additional franchises and permits
franchising authorities to operate cable systems. Therefore, well-financed
businesses from outside the cable industry, such as the public utilities that
own certain of the conduits or poles which carry cable, may become competitors
for franchises or providers of competing services. Telephone companies or others
may also enter the video distribution market by becoming open video service
operators as we have done in several markets, pursuant to Section 653 of the
Communications Act. No local franchise is required for the provision of such
service. See "Regulation of Video Services" below.

     CLECs and Other Competitors

     We also face, and expect to continue to face, competition from other
potential competitors in certain of our geographic markets. Other CLECs, such as
subsidiaries of AT&T and MCI/WorldCom, compete for local telephone services,
although they have to date focused primarily on the market for commercial
customers rather than residential customers. In addition, potential competitors
capable of offering private line and special access services also include other
smaller long distance carriers, cable television companies, electric utilities,
microwave carriers, wireless telephone system operators and private networks
built by large end-users, including Winstar, Dualstar and New Vision. However,
we believe that, at least initially, we are relatively unique in our markets in
offering bundled voice, video and data services primarily to customers in
residential areas over our own advanced fiber optic network.

     Internet Services

     The Internet access market is extremely competitive and highly fragmented.
No significant barriers to entry exist, and accordingly competition in this
market is expected to intensify. Our current and prospective competitors include
many large companies with substantially greater market presence and financial
and other resources. We compete directly or indirectly with:

     o     established online services, such as America Online, the Microsoft
           Network and Prodigy;

     o     local, regional, and national ISPs such as PSINet, EarthLink,
           Mindspring and Rocky Mountain Internet;

     o     the Internet services of national and international
           telecommunications companies, such as AT&T, GTE, MCI/WorldCom and
           Cable & Wireless;

     o     Internet access offered by RBOCs such as Bell Atlantic; and

     o     online services offered by incumbent cable providers, such as At
           Home and Roadrunner.

     Bell Atlantic has recently asked the FCC to authorize it to build a
regional high-speed network, which would serve as an Internet backbone, and to
exempt this network from pricing and other regulatory restrictions. The network
would span the states from Maine to Virginia. The acquisition of Internet access
competition is likely to increase as large diversified telecommunications and
media companies acquire ISPs and as ISPs consolidate into larger, more
competitive companies. For example, AT&T has completed the acquisition of TCI's
cable television networks, which gives it a significant ownership interest in At
Home, an ISP. Diversified competitors may bundle other services and products
with Internet connectivity services, potentially placing us at a competitive
disadvantage. In addition, competitors may create downward pressure on the
pricing of and margins from Internet access services.

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<PAGE>

Competition could also impact our ability to participate in transit agreements
and peering arrangements, which could in turn adversely effect the speed of
service that we can provide to our customers.

     Other new technologies may become competitive with our services. A provider
of Limited Multi Distribution Systems ("LMDS") recently began offering wireless
Internet and video programming services in New York City and has announced plans
to offer telephone service in the future. Advances in communications technology
as well as changes in the marketplace and the regulatory and legislative
environment are constantly occurring. In addition, a continuing trend toward
business combinations and alliances in the telecommunications industry may also
create significant new competitors. We cannot predict whether competition from
developing and future technologies or from future competitors will have a
material impact on our operations or financial condition.

Regulation

     Our telephone and video programming transmission services are subject to
federal, state and local government regulation. The 1996 Act introduced
widespread changes in the regulation of the communications industry, including
the local telephone, long distance telephone, data services, and television
entertainment segments. The 1996 Act was intended to promote competition and
decrease regulation of these segments of the industry. The law delegates to both
the FCC and the states broad regulatory and administrative authority to
implement the 1996 Act.

     Telecommunications Act of 1996

     The 1996 Act eliminates many of the pre-existing legal barriers to
competition in the telephone and video programming communications businesses.
The Act also preempts many of the state barriers to local telephone service
competition that previously existed in state and local laws and regulations and
sets basic standards for relationships between telecommunications providers.

     The 1996 Act removes barriers to entry in the local exchange telephone
market by preempting state and local laws that restrict competition and by
requiring LECs to provide nondiscriminatory access and interconnection to
potential competitors, such as cable operators, wireless telecommunications
providers, and long distance companies. In addition, the 1996 Act provides
relief from the earnings restrictions and price controls that have governed the
local telephone business for many years. The 1996 Act will also, once certain
thresholds are met, allow incumbent RBOCs to enter the long distance market
within their own local service regions.

     Regulations promulgated by the FCC under the 1996 Act require LECs to open
their telephone networks to competition by providing competitors
interconnection, access to unbundled network elements and retail services at
wholesale rates. As a result of these changes, companies such as ours are now
able to interconnect with the incumbent LECs in order to provide local exchange
services. Numerous parties appealed certain aspects of these regulations, and
implementation of several provisions of the rules was delayed while the courts
considered these appeals. On January 25, 1999, the Supreme Court issued an
opinion confirming the FCC's authority to issue regulations implementing the
pricing and other provisions of the 1996 Act and reinstating most of the
challenged rules. However, the Supreme Court vacated a key FCC rule identifying
the network elements that incumbent LECs are required to unbundle. This decision
will likely require the FCC to conduct additional proceedings to determine new
unbundling standards. The outcome of such proceedings cannot be predicted. Also,
while the Supreme Court confirmed that the FCC has authority to issue rules
implementing the 1996 Act, particular rules still may be challenged in future
court proceedings. Future regulatory proceedings and court appeals may create
delay and uncertainty in effectuating the interconnection and local competition
provisions of the 1996 Act. While the courts were reviewing the FCC rules, we
had entered into interconnection agreements with Bell Atlantic covering all of
our target market area that are generally consistent with the FCC guidelines.
Those agreements remain in effect, although some are subject to termination on
or after July 1, 1999. We cannot assure you, however, that we will be able to
obtain or enforce future interconnection agreements, or obtain renewal of
existing agreements, on acceptable terms.

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<PAGE>

     The 1996 Act establishes certain conditions before RBOCs are allowed to
offer interLATA long distance service to customers within their local service
regions. These conditions include 14 "checklist" requirements designed to open
the RBOC networks to competitors. To date, no RBOC has received FCC
authorization to provide in-region long distance service, but it is likely that
several RBOCs will seek authorization in 1999. Bell Atlantic is likely to seek
authorization for New York and possibly other states in its region. If an RBOC
is authorized to provide in-region long distance service in one or more states,
the RBOC may be able to offer "one-stop shopping" services that compete with our
service offerings. See "Business-Competition". In addition, the RBOC will lose
the incentive it now has to rapidly implement the interconnection provisions of
the 1996 Act in order to obtain in-region authority, although the RBOC will
still be subject to a legal obligation to comply with those provisions.

     The 1996 Act also makes far-reaching changes in the regulation of video
programming transmission services. These include changes to the regulations
applicable to video operators, the elimination of restrictions on telephone
company entry into the video business, and the establishment of a new OVS
regulatory structure for telephone companies and others. Under the 1996 Act and
implementing rules adopted by the FCC, local telephone companies, including both
incumbent LECs such as Bell Atlantic, and CLECs such as RCN, may provide service
as traditional cable television operators subject to municipal cable television
franchises, or they may choose to provide their programming over non-franchised
open video systems subject to certain conditions. The ability to provide OVS
service without having obtained a local franchise, however, has been called into
question by a recent decision. See "Regulation of Video Services" below. The
conditions include making available a portion of their channel capacity for use
by unaffiliated program distributors and satisfying certain other requirements,
including providing capacity for public, educational and government channels,
and paying a gross receipts fee equal to the franchise fee paid by the incumbent
cable television operator. We are one of the first CLECs to provide television
programming over an advanced fiber optic network under the OVS regulations
implemented by the FCC under the 1996 Act. As discussed below, we are currently
providing OVS service in the City of Boston, in the City of New York and in a
number of communities surrounding Boston. We are also negotiating, in the
District of Columbia, similar agreements in Northern New Jersey, Philadelphia
and surrounding communities, and San Francisco and surrounding communities.
Starpower is negotiating similar OVS agreements and local franchises in
communities surrounding Washington D.C.

     Regulation of Voice Services

     Our voice business is subject to regulation by the FCC at the federal level
for interstate telephone services (i.e., those that originate in one state and
terminate in a different state). State regulatory commissions have jurisdiction
over intrastate communications (i.e., those that originate and terminate in the
same state).

     State Regulation of Intrastate Local and Long Distance Telephone Services.
Our intrastate telephone services are regulated by the public service
commissions or comparable agencies of the various states in which we offer these
services. Our subsidiaries or affiliates have received authority to offer
intrastate telephone services, including local exchange service, in California,
Delaware, the District of Columbia, Maryland, Massachusetts, Nevada, New Jersey,
New York, Pennsylvania, Rhode Island, Vermont and Virginia. We have applied for
authority to offer these services in Arizona, Connecticut, Maine and New
Hampshire. Starpower has separately obtained similar authority in Maryland,
Virginia and the District of Columbia. Our resale and interconnection agreements
have been approved, pursuant to Section 252 of the Communications Act, by state
regulatory commissions in Arizona, Delaware, the District of Columbia, Maine,
Maryland, Massachusetts, New York, New Jersey, New Hampshire, Pennsylvania,
Rhode Island, Vermont and Virginia.

     RCN Long Distance Company is authorized to offer intrastate long distance
services in 48 states nationwide. RCN Long Distance Company is permitted to
resell intrastate long distance services both to other carriers, including our
local operating subsidiaries and Starpower for resale to their end user
subscribers, and to our own end user customers.

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<PAGE>

     FCC Regulation of Interstate and International Telephone Services. Through
several of our subsidiaries, including RCN Long Distance Company, we may provide
domestic interstate telephone services nationwide under tariffs on file at the
FCC. We have been authorized by the FCC under Section 214 of the 1996 Act to
offer worldwide international services as well.

     Local Regulation of Telephone Services. Municipalities also regulate
limited aspects of our voice business by, for example, imposing various zoning
requirements. In some instances, they require telecommunications licenses,
franchise agreements and/or installation permits for access to local streets and
rights-of-way. In New York City, for example, we will be required to obtain a
telephone franchise in order to provide voice services using our advanced fiber
optic network facilities located in the streets of New York City, although
services may be provided over certain leased or resold facilities while we wait
to receive a franchise.

     Regulation of Video Services

     Open Video Systems. At various times between February 1997 and July 1998,
our subsidiaries and affiliates have been certified by the FCC to operate OVS
networks in New York City, Boston, Washington, Philadelphia and San Francisco,
and communities surrounding each of these cities, and in the Northern New Jersey
area. Initiation of OVS services is subject to completion of an open enrollment
period for non-affiliated video programmers to seek capacity on the systems and
after negotiation of certain agreements with local governments. The initial open
enrollment period for each of these systems has expired, except for the Northern
New Jersey system, where the open enrollment period has not yet begun. We
executed an agreement with the City of Boston on June 2, 1997, and initiated OVS
service in the City on that day. Under our agreement with the City of Boston, we
will be required to pay a fee to the City equal to 5% of video revenues. We have
entered into similar OVS agreements or are in the process of negotiating
agreements with certain other Boston-area municipalities, either to offer OVS
services or franchised cable television services. We entered into an agreement
with the City of New York on December 29, 1997 and have initiated OVS service in
the Borough of Manhattan. RCN also provides video distribution service in
Manhattan and a portion of the Bronx using microwave facilities and antennas
located at multiple dwelling units. On July 10, 1998, we supplemented our
agreement with the City of New York to include all five boroughs. On October 26,
1998, Starpower entered into an agreement with the District of Columbia and
initiated OVS service in the District in the last quarter of 1998. Starpower has
entered into similar agreements or is in the process of negotiating agreements
with numerous suburban communities near Washington, D.C., to offer either OVS
services or franchised cable television services.

     In areas where we offer video programming services as an OVS operator, we
are required to make any "open capacity" on the system available to unaffiliated
video program providers ("VPPs"). The commission's rules permit us to retain up
to one-third of system capacity for our own (or our affiliates') use. Under the
OVS regulations, during initial open enrollment period we must offer at least
two-thirds of our capacity to unaffiliated parties, if demand for such capacity
exists during the open enrollment period. In certain areas, at the request of
local officials, we are in discussions to explore the feasibility of obtaining a
cable franchise instead of an OVS agreement. We will consider providing RCN
video service under franchise agreements rather than OVS certification, if
franchise agreements are preferred by the local authorities and can be obtained
on acceptable terms and conditions. We will consider the relative benefits of
OVS certification versus local franchise agreements, including the possible
imposition build-out requirements, before making any decisions.

     The U.S. Court of Appeals for the Fifth Circuit has recently released a
decision approving some portions of the FCC's OVS rules but striking down other
portions. Although a number of the Court's rulings are favorable to OVS
operators, others could have an adverse impact on our OVS operations and
planning. The Court's most significant decision was to strike down the FCC's
rule preempting local authority to franchise OVS operators. The FCC's rules had
set forth a relatively simple procedure at the FCC for rapid certification of
each OVS system on a regional basis and permitted local authorities to regulate
OVS only as to rights-of-way administration and in other minor respects. One of
the principal advantages of OVS as structured by Congress and by the FCC was to
eliminate the time, expense, and uncertainty generally required to secure a
local franchise. The Court's action allowing local

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<PAGE>

governments to require area-by-area franchising may significantly reduce the
advantage of OVS operation as compared with traditional franchising and delay
achieving agreements with local governments. We believe the Court's decision is
erroneous in its application of law and have sought reconsideration by the full
court. The FCC, which is the respondent before the Fifth Circuit, has also
sought reconsideration. In the event the court denies reconsideration, it is not
clear how the FCC will modify its OVS policy and rules to take account of the
Court's specific rulings. The U.S. Courts of Appeal do not routinely grant
requests to reconsider their rulings and when they do a significant period of
time is generally required for the consideration of such requests. However, in
many instances RCN, at the insistence of local authorities, has been negotiating
franchise agreements and agreeing to provisions in OVS right-of-way agreements
which to some extent erode the differences between the two modes of operation.
Accordingly, while the ruling is disadvantageous to us, we expect to continue to
expand our video service offerings.

     The FCC's rules require OVS operators to make their facilities available to
video program providers on a non-discriminatory basis, with certain exceptions.
One exception is that competing in-region cable operators are not entitled to
become video program providers on an OVS except in certain limited
circumstances. The incumbent cable operator in Boston, Cablevision of Boston,
Inc., sought an order from the FCC compelling us to provide it with certain data
on our Boston OVS system and declaring Cablevision an eligible video programming
provider on our system. The FCC's Cable Services Bureau denied its request and
that denial has become final. Time Warner Cable Co., which operates franchised
cable systems in many suburban Boston communities included within our OVS
certification, also sought an order compelling us to release certain OVS system
data and to declare it eligible for carriage on our system. Unlike Cablevision,
Time Warner is not competing with any RCN-provided OVS service and restricted
its request to communities where it is not the franchised cable operator. Time
Warner also petitioned the FCC to impose fines or cancel our OVS authority. The
Cable Services Bureau partially granted the data request and partially denied it
but found too little evidence to justify further exploration of our good faith
in acquiring OVS authority. We have sought partial reconsideration of the
Bureau's order, which is currently pending. Time Warner filed a similar
complaint against us in New York City where we compete with it for video
distribution business in Manhattan. Time Warner asked for system data concerning
parts of New York City in which it does not hold a franchise for cable service.
The FCC's Cable Services Bureau partially granted Time Warner's complaint, and
partially denied it, relying on its prior decision in the Time Warner complaint
in the Boston area. We have sought partial reconsideration of that decision and
Time Warner has asked the full commission to review that portion of the Cable
Bureau's decision which denied certain of Time Warner's data requests.

     Two additional cable company complaints have been filed against Starpower,
seeking data and a determination of eligibility for carriage on the metropolitan
Washington OVS system. As in the prior complaints, they challenge our status as
an OVS operator and seek to revoke our OVS authority. These complaints were
filed by Media General Cable of Fairfax, Inc., which operates franchised cable
service within the projected service area of Starpower's OVS system, and Media
General Cable of Fredericksburg, Inc. which is an affiliate of Media General
Cable of Fairfax, Inc. and operates a cable system beyond Starpower's service
area. Both claimed to be seeking system data for areas in which they do not
provide franchised service. Starpower declined to provide system data to Media
General of Fairfax on the ground that, as an in-region competitive cable
company, it was not entitled to the data or to be carried on the system. The
request of Media General of Fredericksburg was denied on the ground that, as an
affiliate of Media General of Fairfax, it was not entitled under FCC rules to
the requested data or to be carried on the system. Starpower responded to both
Media General Complaints on December 14, 1998. Media General has also sought to
initiate discovery against Starpower. The Cable Services Bureau has not yet
acted on the Media General complaints.

     Cable industry representatives have opposed or commented adversely on two
other RCN OVS initiatives. In respect to our application for OVS authority in
the San Francisco area, the California Cable Television Association filed an
opposition, alleging that we were misusing the OVS rules to compete unfairly
against franchised cable operators. The Pennsylvania Cable & Telecommunications
Association filed comments on our OVS application for OVS authority in the
Philadelphia region, making similar allegations but not formally opposing the
application.

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<PAGE>

The Cable Services Bureau granted both of our applications, indicating that our
applications were consistent with the rules and that the opposing parties had
not provided sufficient evidence to justify initiating any regulatory action
against us. There is language in each of these Cable Bureau determinations
involving our implementation of the OVS concept which leave open the possibility
for adverse parties to challenge our status as an OVS operator. We believe that
we are operating in strict conformity with all applicable provisions of the law
and will continue to defend our OVS roll-outs against what we believe are
anti-competitive requests for data or carriage by competing in-region cable
operators. However, we cannot assure you that the FCC will resolve the pending
OVS complaints in our favor. If the FCC were to grant any such complaints and as
a result we were obliged to share system data with our local competitors, we
would be forced to reassess the desirability of continuing to operate in certain
markets as an OVS operator as compared with seeking traditional cable
franchises. We do not believe that abandoning our OVS certifications under such
circumstances would materially adversely affect our video distribution
activities.

     As in the case of traditional franchised cable systems, OVS operators must
in virtually all locations have access to public rights-of-way for their
distribution plant. In a number of jurisdictions local authorities have
attempted to impose rights-of-way fees on us which we believe are in violation
of federal law. A number of FCC and judicial decisions have addressed the issues
posed by the imposition of rights-of-way fees on CLECs and on video
distributors. To date the state of the law is uncertain and may remain so for
some time. The obligation to pay local rights-of-way fees which are excessive or
discriminatory could have adverse effects on our business activities. The
incumbent cable operator in Boston, MA, Cablevision of Boston, Inc., recently
filed suit in U.S. District Court in Boston against the City of Boston,
RCN-BECOCOM, RCN, BECOCOM and others, alleging that the City had followed a
discriminatory policy in administering access to public rights-of-way for the
installation and use of underground conduit and that the private defendants had
participated in an effort to unlawfully construct and use underground conduit.
Cablevision claimed that the defendants were in violation of the 1996 Act and
Massachusetts state law, and sought a preliminary injunction. RCN and the other
defendants denied participating in any unlawful activity. The Court has denied
the preliminary injunction and issued a written memorandum of decision
expressing some doubts about the underlying merits of Cablevision's claims.
Cablevision filed an appeal of the District Court's ruling with the First
Circuit Court of Appeals on February 26, 1999. On March 15, 1999 the district
judge stayed the litigation pending the outcome of Cablevision's appeal. We
cannot assure you that Cablevision will not further pursue the litigation nor
that if it does so the outcome will be favorable to RCN. Oral argument on the
appeal will be scheduled for June 1999. Cablevision has filed an amended
complaint in the District Court, but the District Court has stayed that
proceeding until the First Circuit Court rules on the appeal. We cannot assure
you that Cablevision will not further pursue the litigation nor that if it does
so the outcome will be favorable to us.

     Access issues have also arisen in a proceeding before the Massachusetts
Department of Telecommunications and Energy (the "MDTE"). In 1997, the MDTE
opened an investigation into Boston Edison Company's compliance with a MDTE
order in 1993 that permitted Boston Edison to invest up to $45 million in its
unregulated subsidiary Boston Edison Technology Group for three limited
purposes. RCN-BECOCOM intervened in the current proceeding, as did Cablevision
Systems Corporation and the New England Cable Television Association, Inc.,
along with others. Hearings began in December 1998 and are still proceeding. The
intervenors, Cablevision in particular, have advocated that if the MDTE finds
that Boston Edison's investment in RCN-BECOCOM violated the 1993 Order, then
Boston Edison should be forced to divest itself of its interest in RCN-BECOCOM,
that RCN-BECOCOM should be subject to the same terms and conditions as other
cable television providers who seek to attach their facilities to Boston Edison
facilities, and that installed RCN-BECOCOM cables and fiber-optic facilities
should be relocated. Boston Edison is vigorously defending the propriety of its
compliance with the MDTE's 1993 Order, and its investment in RCN-BECOCOM. We
cannot assure you that the MDTE will not determine that Boston Edison violated
the MDTE's 1993 Order nor can we assure you as to the nature of any remedy that
the MDTE may determine to be appropriate including those proposed remedies which
are equitable in nature. We are participating in the proceeding and plan to take
such action as we deem appropriate to protect our rights.

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     Prior to our certification as an OVS provider, we offered limited video
programming services using the Video DialTone Transport ("VDT") services offered
by MFS/WorldCom in Manhattan and the City of Boston. In February 1997, the FCC
held that MFS/WorldCom's facilities did not qualify as video dialtone facilities
entitled to an extension of time to comply with the newly adopted OVS rules.
Nonetheless, the FCC did not direct MFS/WorldCom and RCN to cease video
programming distribution operations over the MFS/WorldCom platform. One of the
incumbent cable television companies in New York City has filed a complaint with
the New York Public Service Commission challenging the former, pre-OVS,
operations of RCN and WorldCom under the VDT framework, which remains pending
before that commission.

     Wireless Video Services. Our 18 GHz wireless video services in New York
City are distributed using microwave facilities provided by Bartholdi Cable
under temporary authorizations issued to Bartholdi Cable by the FCC. Bartholdi
Cable has agreed to provide us with transmission services until we have either
converted the wireless video subscribers to our advanced fiber optic network
facilities or have obtained FCC authority to provide services under our own
wireless radio licenses. In addition, Bartholdi Cable has agreed to transfer to
us the transmission equipment on demand. Bartholdi Cable's obligation to provide
transmission services is subject to Bartholdi Cable having licenses from the FCC
to provide these services. The qualifications of Bartholdi Cable to hold certain
of the licenses needed to provide transmission services to us are at issue in an
FCC proceeding in which an initial decision was released on March 6, 1998. In
the initial decision, the Administrative Law Judge found Bartholdi Cable
unqualified with respect to 15 such licenses. The Administrative Law Judge
declared that the initial decision would become effective 50 days after its
release unless Bartholdi Cable filed exceptions to the initial decision within
30 days of its release or the FCC elected to review the case on its own motion.
Bartholdi Cable filed exceptions to the initial decision on April 7, 1998.
Because of the uncertainty as to Bartholdi Cable's right in the future to offer
transmission services to us, we filed our own license applications at the FCC
for all of the microwave transmission paths which are currently being used by
Bartholdi Cable to provide us with transmission services. In light of the
increased uncertainties resulting from the initial decision in the FCC
proceeding, we expect now actively to pursue our license applications. While we
expect to receive authorizations to transmit over these microwave paths, we
cannot assure you that we will be able to offer wireless video services under
our own FCC licenses or that the FCC's investigation will be resolved favorably.
Our failure to obtain these licenses or resolve these proceedings would
materially adversely affect our wireless video operations in New York City.

     We cannot assure you that we will be able to obtain or retain all necessary
authorizations needed to construct advanced fiber optic network facilities, to
convert our wireless video subscribers to an advanced fiber optic network or to
offer wireless video services under our own FCC licenses.

     Hybrid Fiber/Coaxial Cable. Our hybrid fiber/coaxial cable systems are
subject to regulation under the 1992 Act. The 1992 Act regulate rates for cable
services in communities that are not subject to "effective competition," certain
programming requirements, and broadcast signal carriage requirements that allow
local commercial television broadcast stations to require a cable system to
carry the station. Local commercial television broadcast stations may elect once
every three years to require a cable system to carry the station ("must-carry"),
subject to certain exceptions, or to withhold consent and negotiate the terms of
carriage ("retransmission consent"). A cable system generally is required to
devote up to one-third of its activated channel capacity for the carriage of
local commercial television stations whether under the mandatory carriage or
retransmission consent requirements of the 1992 Act. Local non-commercial
television stations are also given mandatory carriage rights. The FCC recently
issued rules establishing standards for digital television ("DTV"). The FCC's
rules require television stations to simulcast their existing television signals
("NTSC") and DTV signals for a period of years. During this simulcast period, it
is unclear whether must-carry rules will apply to DTV signals. The FCC has
initiated a rule making proceeding seeking comment on the carriage of broadcast
DTV signals by cable and OVS operators during the transitional period to full
digital broadcasting. The FCC's proceeding addresses the need for the digital
systems to be compatible, seeks comment on possible changes to the mandatory
carriage rules, and explores the impact carriage of DTV signals may have on
other FCC rules. The cable industry has generally opposed many of the FCC's
proposals, on the grounds that they constitute excessively burdensome
obligations on the industry. The Communications Act permits franchising
authorities to require cable operators to set aside certain channels for

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<PAGE>

public, educational and governmental access programming. Cable systems with 36
or more channels must designate a portion of their channel capacity for
commercial leased access by third parties to provide programming that may
compete with services offered by the cable operator.

     On September 8, 1997, we were notified by the FCC that it had ruled that
certain of our upper levels of service for our New Jersey systems were regulated
levels of service and that our rates for these levels of service exceeded the
rates allowed by the FCC rate regulation rules. Since that time, RCN and the FCC
have negotiated a settlement under which the FCC finds that our upper levels of
service for our New Jersey and certain New York systems are "New Product Tiers".
Our rates for 1997 and prior years for those systems are approved, except that
we will give a $5.00 per subscriber refund to all subscribers in our New Jersey
systems and a refund of $3.30 per subscriber in certain of our New York systems.
The settlement has been subject to public comment and is now awaiting final
approval by the FCC. We do not believe that the ultimate resolution of this
matter, whether the settlement is finally approved or not, will have a material
impact on our results of operations or financial condition.

     Because a cable communications system uses local streets and rights-of-way,
such cable systems are generally subject to state and local regulation,
typically imposed through the franchising process. The terms and conditions of
state or local government franchises vary materially from jurisdiction to
jurisdiction. Generally, they contain provisions governing cable service rates,
franchise fees, franchise term, system construction and maintenance obligations,
customer service standards, franchise renewal, sale or transfer of the
franchise, territory of the franchisee and use and occupancy of public streets
and types of cable services provided. Local franchising authorities may award
one or more franchises within their jurisdictions and prohibit non-grandfathered
cable systems from operating without a franchise. The Communications Act also
provides that in granting or renewing franchises, local authorities may
establish requirements for cable-related facilities and equipment, but not for
video programming or information services other than in broad categories. The
Communications Act limits franchise fees to 5% of revenues derived from cable
operations and permits the cable operator to seek modification of franchise
requirements through the franchise authority or by judicial action if changed
circumstances warrant.

     Our ability to provide franchised cable television services depends largely
on our ability to obtain and renew our franchise agreements from local
government authorities on generally acceptable terms. We currently have 91
franchise agreements relating to the hybrid fiber/coaxial cable systems in New
York (outside New York City), New Jersey and Pennsylvania. These franchises
typically contain many conditions, such as time limitations on commencement and
completion of construction, conditions of service, including the number of
channels, the provision of free service to schools and certain other public
institutions, and the maintenance of insurance and indemnity bonds. These
franchises provide for the payment of fees to the issuing authorities and
generally range from 3% to 5% of revenues. The duration of these outstanding
franchises presently varies up to the year 2011. To date, all of our cable
franchises have been renewed or extended, generally at or before their stated
expirations and on acceptable terms. Approximately 39 of our hybrid
fiber/coaxial cable systems' franchises are due for renewal within the next
three years. We cannot assure you that we will be able to renew our franchises
on acceptable terms. No single franchise accounts for more than 4% of our total
revenue. Our five largest franchises account for approximately 11% of our total
revenue.

     The hybrid fiber/coaxial cable systems are also subject to certain service
quality standards and other obligations imposed by the FCC and, where effective
competition has not been demonstrated to exist, to rate regulation by the FCC as
well. Our cable television system in Pennsylvania has been operating in a
competitive cable environment for almost 30 years, with approximately 80% of the
homes passed having access to an alternate cable operator, Service Electric
Cable TV. As a result, our Pennsylvania cable system is exempt from many FCC
cable television regulations, including rate regulation. Our other cable
television systems in New York State and New Jersey currently remain subject to
FCC rate regulation. As required by the 1996 Act, however, all cable programming
services will be deregulated if effective competition is shown to exist in the
franchise area, or by March 31, 1999, whichever date is sooner. There has been
widespread discussion in Congress about possible legislation to keep cable rate
regulation in effect longer. We cannot assure you that such legislation will not
be adopted. We anticipate that the remaining provisions of the 1992 Act that do
not relate to rate regulation, including

                                       39
<PAGE>

provisions relating to retransmission consent and customer service standards,
will remain in place and may reduce the future operating margins of our hybrid
fiber/coaxial cable television businesses as video programming competition
develops in our cable television service markets.

     The FCC is required to regulate the rates, terms and conditions imposed by
public utilities for cable systems' use of utility pole and conduit space unless
state authorities can demonstrate that they adequately regulate pole attachment
rates. In the absence of state regulation, the FCC administers pole attachment
rates on a formula basis. In some cases, utility companies have increased pole
attachment fees for cable systems that have installed fiber optic cables and
that are using these cables for the distribution of non-video services. The FCC
concluded that, in the absence of state regulation, it can determine whether
utility companies have justified their demand for additional rental fees and
that the Communications Act does not permit disparate rates based on the type of
service provided over the equipment attached to the utility's pole. The 1996 Act
and the FCC's implementing regulations modify the current pole attachment
provisions of the Communications Act. It immediately permits certain providers
of telecommunications services to rely upon the protections of the current law
and require that utilities provide cable systems and telecommunications carriers
with nondiscriminatory access to any pole, conduit or right-of-way, controlled
by the utility. The FCC has recently adopted new regulations to govern the
charges for pole attachments used by companies providing telecommunications
services, including cable operators. These new pole attachment rate regulations
will become effective five years after enactment of the 1996 Act, and any
increase in attachment rates resulting from the FCC's new regulations will be
phased in equal annual increments over a period of five years beginning on the
effective date of the new FCC regulations. The ultimate outcome of these
rulemakings and the ultimate impact of any revised FCC rate formula or of any
new pole attachment rate regulations on us or our businesses cannot be
determined at this time.

     The 1992 Act, the 1996 Act and FCC regulations preclude any cable operator
or satellite video programmer affiliated with a cable company, or with a common
carrier providing video programming directly to its subscribers, from favoring
an affiliated company over competitors. These programmers are required to sell
their programming to other multichannel video distributors. These provisions
limit the ability of program suppliers affiliated with cable companies or with
common carriers providing satellite delivered video programming directly to
their subscribers to offer exclusive programming arrangements to their
affiliates. Except in limited circumstances, however, these statutory and
regulatory limitations do not apply to programming which is distributed other
than by satellite. We are experiencing difficulty in securing access to certain
local sports programming in the New York City market, which we consider
important to successful competition in that market. The Communications Act also
includes provisions concerning horizontal and vertical ownership of cable
systems, customer service, subscriber privacy, marketing practices, equal
employment opportunity, obscene or indecent programming, regulation of technical
standards and equipment compatibility.

     In addition to the FCC regulations previously discussed, there are other
FCC regulations covering areas such as:

     o     equal employment opportunity;

     o     syndicated program exclusivity;

     o     network program non-duplication;

     o     registration of cable systems;

     o     maintenance of various records and public inspection files;

     o     microwave frequency usage;

     o     lockbox availability;

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<PAGE>

     o     sponsorship identification;

     o     antenna structure notification;

     o     tower marking and lighting;

     o     carriage of local sports broadcast programming;

     o     application of rules governing political broadcasts;

     o     limitations on advertising contained in non-broadcast children's
           programming;

     o     consumer protection and customer service;

     o     ownership and access to cable home wiring and home wiring in multiple
           dwelling units;

     o     indecent programming;

     o     programmer access to cable systems;

     o     programming agreements;

     o     technical standards; and

     o     consumer electronics equipment compatibility and closed captioning.

     The FCC has the authority to enforce its regulations through imposing
substantial fines, issuing cease and desist orders and/or imposing other
administrative sanctions, such as revoking FCC licenses needed to operate
certain transmission facilities often used in connection with cable operations.
We have difficulty gaining access to the video distribution wiring in certain
multiple dwelling units in the City of Boston in which Cablevision is the
incumbent provider of video services. In some buildings the management will not
permit us to install our own distribution wiring and Cablevision has not been
willing to permit us to use the existing wiring on some equitable basis when we
wish to initiate service to an individual unit previously served by Cablevision.
We have sought a ruling from the FCC's Cable Services Bureau that existing FCC
inside wiring rules require Cablevision to cooperate with us to make such wiring
available to it. The matter is currently pending before the FCC's Cable Services
Bureau staff.

     Other bills and administrative proposals pertaining to cable television
have previously been introduced in Congress or considered by other governmental
bodies over the past several years. There will likely be legislative proposals
in the future by Congress and other governmental bodies relating to the
regulation of communications services.

     Cable television systems are subject to federal compulsory copyright
licensing covering the retransmission of television and radio broadcast signals.
In exchange for filing certain reports and contributing a percentage of their
basic revenues to a federal copyright royalty pool, cable operators can obtain
blanket licenses to retransmit the copyrighted material on broadcast signals.

     Other Regulatory Issues

     The data services business, including Internet access, is largely
unregulated at this time apart from federal, state, and local laws and
regulations applicable to businesses in general. However, we cannot assure you
that this business will not become subject to regulatory restraints. Some
federal, state, local and foreign governmental

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<PAGE>

organizations are considering a number of legislative and regulatory proposals
with respect to Internet user privacy, infringement, pricing, quality of
products and services and intellectual property ownership. We are also unsure
how existing laws will be applied to the Internet in areas such as property
ownership, copyright, trademark, trade secret, obscenity and defamation.
Additionally, some jurisdictions have sought to impose taxes and other burdens
on providers of data services, and to regulate content provided via the Internet
and other information services. We expect that proposals of this nature will
continue to be debated in Congress and state legislatures in the future. In
addition, although the FCC has on several occasions rejected proposals to impose
additional costs on providers of Internet access service and other data services
for the use of local exchange telephone network facilities for access to their
customers, the FCC or Congress may consider similar proposals in the future. The
adoption of new laws or the adaptation of existing laws to the Internet may
decrease the growth in the use of the Internet, which could in turn have a
material adverse effect on our Internet business.

     We have interconnection agreements with Bell Atlantic and other incumbent
local exchange carriers ("ILECs") that entitle us to collect reciprocal
compensation payments from them for local telephone calls that terminate on our
facilities. We make similar payments for outbound local calls we deliver to the
incumbent local exchange carriers. However, ILECs around the country have been
contesting whether the obligation to pay reciprocal compensation to CLECs should
apply to local telephone calls from an ILEC's customers to Internet service
providers served by CLECs. The ILECs claim that this traffic is interstate in
nature and therefore should be exempt from compensation arrangements applicable
to local, intrastate calls. CLECs have contended that the interconnection
agreements provide no exception for local calls to Internet service providers
and reciprocal compensation is therefore applicable. Currently, over 25 state
commissions and several federal and state courts have ruled that reciprocal
compensation arrangements do apply to calls to Internet service providers, and
no jurisdiction has ruled to the contrary. In the regions we are focusing on,
the California, Massachusetts, New York, Pennsylvania, Maryland and Virginia
public utility commissions have issued such orders. Certain of these are subject
to appeal. Additional disputes over the appropriate treatment of ISP traffic are
pending in other states. On February 26, 1999, the FCC released a Declaratory
Ruling determining that ISP traffic is interstate for jurisdictional purposes,
but that its current rules neither require nor prohibit the payment of
reciprocal compensation for such calls. In the absence of a federal rule, the
FCC determined that state commissions have authority to interpret and enforce
the reciprocal compensation provisions of existing interconnection agreements,
and to determine the appropriate treatment of ISP traffic in arbitrating new
agreements. The FCC also requested comment on alternative federal rules to
govern compensation for such calls in the future. In response to the FCC ruling,
some RBOCs have asked state commissions to reopen previous decisions requiring
the payment of reciprocal compensation on ISP calls. We are opposing such
efforts in Maryland, Massachusetts, and New York. We anticipate that Internet
service providers will be among our target customers, and adverse decisions in
state proceedings could limit our ability to service this group of customers
profitably.

     In order to develop our networks, we must obtain local franchises and other
permits, as well as building access agreements and rights to use underground
conduit and pole space, private easements and other rights-of-way and fiber
capacity from entities such as incumbent local exchange carriers and other
utilities, railroads, long distance companies, state highway authorities, local
governments and transit authorities. We cannot assure you that we will be able
to maintain our existing franchises, permits and rights or to obtain and
maintain the other franchises, permits, building access agreements and rights
needed to implement our business plan on acceptable terms. Although we do not
believe that any of the existing arrangements will be canceled or will not be
renewed as needed in the near future, certain cancellation or non-renewal of
these arrangements could materially adversely affect our business. In addition,
our failure to enter into and maintain any such required arrangements for a
particular network, including a network which is already under development, may
affect our ability to acquire or develop that network.

     We have summarized present and proposed federal, state, and local
regulations and legislation affecting the telephone, video programming and data
service industries. This summary is not complete. Other existing federal
regulations, copyright licensing, and, in many jurisdictions, state and local
franchise requirements, are currently the subject of judicial proceedings,
legislative hearings and administrative proposals which could change, in varying

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<PAGE>

degrees, the operations of communications companies. The ultimate outcome of
these proceedings, and the ultimate impact of the 1996 Act or any final
regulations adopted under the new law on us or our businesses cannot be
determined at this time.

Employees

     As of December 31, 1998, we had approximately 2,150 full-time employees
including joint ventures, general office and administrative personnel and
approximately 200 part-time employees. We have a collective bargaining agreement
that covers approximately 70 employees, which is valid through January 14, 2001.

We consider relations with our employees to be good.

Legal Proceedings

     In the normal course of business, there are various legal proceedings
outstanding, including both commercial and regulatory litigation. In the opinion
of management, these proceedings will not have a material adverse effect on our
results of operations or financial condition. For a description of certain
proceedings affecting certain of our affiliates, see "Regulation - Regulation of
Video Services."

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<PAGE>

                          DESCRIPTION OF CAPITAL STOCK

     The following description of our capital stock is based upon our
certificate of incorporation ("Certificate of Incorporation"), our bylaws
("Bylaws") and applicable provisions of law. We have summarized certain portions
of the Certificate of Incorporation and Bylaws below. The summary is not
complete. The Certificate of Incorporation and Bylaws are incorporated by
reference to the registration statement for these securities that we have filed
with the SEC, and have been filed as exhibits to our 10-K for the year ended
December 31, 1997. You should read the Certificate of Incorporation and Bylaws
for the provisions that are important to you.

     Certain provisions of the Delaware General Corporation Law ("DGCL"), the
Certificate of Incorporation and the Bylaws summarized in the following
paragraphs may have an anti-takeover effect. This may delay, defer or prevent a
tender offer or takeover attempt that a shareholder might consider in its best
interests, including those attempts that might result in a premium over the
market price for its shares.

Authorized Capital Stock

     Our Certificate of Incorporation authorizes us to issue 200 million shares
of common stock, par value $1.00 per share, 400 million shares of Class B common
stock, par value $1.00 per share, and 25 million shares of preferred stock par
value $1.00 per share.

Common Stock

     Subject to the rights of the holders of any preferred stock which may be
outstanding, each holder of common stock is entitled to receive any dividends
our Board of Directors declares out of funds legally available to pay dividends.
If we liquidate our business, holders of common stock are entitled to share
equally in any distribution of our assets after we pay our liabilities and the
liquidation preference of any outstanding preferred stock. Each holder of common
stock is entitled to one vote per share, and is entitled to vote on all matters
presented to a vote of shareholders, including the election of directors.
Holders of common stock have no cumulative voting rights or preemptive rights to
purchase or subscribe for any stock or other securities. In addition, there are
no conversion rights or redemption or sinking fund provisions. On December 31,
1998, there were 64,290,493 shares of common stock issued and outstanding. The
common stock is admitted for trading on the Nasdaq National Market.

     The Certificate of Incorporation contains no restrictions on the
alienability of the common stock. Except as disclosed in the section entitled
"Charter and Bylaw Provisions," below, there are no provision in the Certificate
of Incorporation or Bylaws and or any agreement or plan involving RCN that would
discriminate against any existing or prospective holder of common stock as a
result of a holder owning a substantial amount of common stock.

Class B Stock

     The Class B common stock is virtually identical to the Common Stock except
that:

     o    the Class B common stock is generally non-voting,

     o    the common stock is convertible at the option of the holder into
          Class B common stock and

     o    in certain mergers, distributions and other transactions in
          which the holders of common stock are entitled to receive equity
          interests of one or more corporations (including RCN), the equity
          interests distributed to holders of common stock and the Class B
          common stock may have rights and privileges that are substantially
          equivalent to the current rights and privileges of the common stock
          and the Class B common stock, respectively.

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<PAGE>

     As of January 28, 1999, there are no outstanding shares of Class B common
stock and we do not have any current plan or intention to issue any Class B
common stock.

Preferred Stock

     This prospectus describes certain general terms and provisions of our
preferred stock. When we offer to sell a particular series of preferred stock,
we will describe the specific terms of the securities in a supplement to this
prospectus. The prospectus supplement will also indicate whether the general
terms and provisions described in this prospectus apply to the particular series
of preferred stock. The preferred stock will be issued under a certificate of
designations relating to each series of preferred stock, and is also subject to
our Certificate of Incorporation.

     We have summarized certain terms of the certificate of designations below.
The summary is not complete. The certificate of designations will be filed with
the SEC in connection with an offering of preferred stock.

     Under the Certificate of Incorporation, our Board of Directors has the
authority to

     o     create one or more series of preferred stock,

     o     issue shares of preferred stock in any series up to the maximum
           number of shares of preferred stock authorized, and

     o     determine the preferences, rights, privileges and restrictions of any
           series.

     Our Board may issue authorized shares of preferred stock, as well as
authorized but unissued shares of common stock, without further shareholder
action, unless shareholder action is required by applicable law or by the rules
of a stock exchange or quotation system on which any series of our stock may be
listed or quoted.

     The prospectus supplement will describe the terms of any preferred stock
being offered, including:

     o    the number of shares and designation or title of the shares;

     o    any liquidation preference per share;

     o    any date of maturity;

     o    any redemption, repayment or sinking fund provisions;

     o    any dividend rate or rates and the dates of payment (or the method
          for determining the dividend rates or dates of payment);

     o    any voting rights;

     o    if other than the currency of the United States, the currency or
          currencies including composite currencies in which the preferred stock
          is denominated and/or in which payments will or may be payable;

     o    the method by which amounts in respect of the preferred stock
          may be calculated and any commodities, currencies or indices, or
          value, rate or price, relevant to such calculation;

     o    whether the preferred stock is convertible or exchangeable and,
          if so, the securities or rights into which the preferred stock is
          convertible or exchangeable, and the terms and conditions of
          conversion or exchange;

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<PAGE>

     o    the place or places where dividends and other payments on the
          preferred stock will be payable; and

     o    any additional voting, dividend, liquidation, redemption and
          other rights, preferences, privileges, limitations and restrictions.

     All shares of preferred stock offered will be fully paid and
non-assessable. Any shares of preferred stock that are issued will have priority
over the common stock with respect to dividend or liquidation rights or both.

     Our Board of Directors could create and issue a series of preferred stock
with rights, privileges or restrictions which effectively discriminates against
an existing or prospective holder of preferred stock as a result of the holder
beneficially owning or commencing a tender offer for a substantial amount of
common stock. One of the effects of authorized but unissued and unreserved
shares of capital stock may be to make it more difficult or discourage an
attempt by a potential acquirer to obtain control of our company by means of a
merger, tender offer, proxy contest or otherwise. This protects the continuity
of our management. The issuance of these shares of capital stock may defer or
prevent a change in control of our company without any further shareholder
action.

     The transfer agent for each series of preferred stock will be described in
the prospectus supplement.

Charter and Bylaw Provisions

     Classified Board of Directors; Removal of Directors. Our Board of Directors
are divided into three classes. The term of office of the first class expires at
the 2001 annual meeting, the term of office of the second class expires at the
1999 annual meeting, and the term of office of the third class expires at the
2000 annual meeting. At each annual meeting, beginning with the 1999 annual
meeting, a class of directors will be elected to replace the class whose term
has just expired. As a result, approximately one-third of the members of our
Board of Directors will be elected each year and generally, each of the
directors serves a staggered three-year term. Moreover, as the DGCL permits in
the case of a corporation having a classified board, our directors may be
removed only for cause.

     These provisions could prevent a shareholder or a group of shareholders
having majority voting power from obtaining control of our Board of Directors
until the second annual meeting following the date the shareholder obtains
majority voting power. Accordingly, these provisions could have the effect of
discouraging a potential acquirer from making a tender offer or otherwise
attempting to obtain control of our company.

     Shareholder Action by Written Consent; Special Meetings. No action required
or permitted to be taken at an annual or special meeting of shareholders may be
taken without a meeting. No action may be taken by the written consent of
shareholders instead of a meeting. Only our Board, our Chairman of the Board or
our Chief Executive Officer may call a special meeting of shareholders. These
provisions may make it more difficult for shareholders to take action opposed by
our Board.

     Advance Notice Provisions. Shareholders seeking to nominate candidates to
be elected as directors at an annual meeting or to bring business before an
annual meeting must comply with an advanced written procedure. Only persons who
are nominated by or at the direction of our Board, or by a shareholder who has
given timely written notice to our Secretary before the meeting to elect
directors, will be eligible as directors. At any shareholders' meeting the
business to be conducted is limited to business brought before the meeting by or
at the direction of the Board of Directors, or a shareholder who has given
timely written notice to our Secretary of its intention to bring business before
an annual meeting. A shareholder must give notice which is received at our
principal executive offices in writing between 60 to 90 days before the meeting.
If, however, we gave less than 70 days' notice or prior public disclosure of the
meeting date, we must receive the shareholder's notice no later than the close
of business on the 10th day following the day we gave the notice or public
disclosure of the meeting date. A shareholder's notice must also contain certain
information specified in the Bylaws. These provisions may preclude or deter some
shareholders from bringing matters before, or making nominations for directors
at, an annual meeting.

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<PAGE>

     Amendment of Certain Charter and Bylaw Provisions. Our Board may adopt,
amend or repeal any provision of the Bylaws. Bylaw provisions may be adopted,
amended or repealed by the affirmative vote of shareholders holding at least 66
2/3% of the total number of votes entitled to be cast in the election of
directors.

     Any amendment, modification or repeal of the provisions of the Certificate
of Incorporation relating to

     o     the election and removal of directors,

     o     the right to call special meetings,

     o     the prohibition on action by written consent,

     o     amendment of the Bylaws and

     o     the limitation of liability and indemnification of officers and
           directors

     will require approval by the affirmative vote of shareholders holding at
least 66 2/3% of the total number of votes entitled to vote in the election of
directors.

Delaware Takeover Statute

     We are subject to Section 203 of the DGCL ("Section 203"). In general,
Section 203 prohibits a publicly held Delaware corporation from engaging in a
"business combination" with an "interested shareholder" for a period of three
years following the date that the shareholder became an interested shareholder,
unless:

     (a)  before such date either the business combination or the transaction
          which resulted in the shareholder becoming an interested shareholder
          is approved by the board of directors of the corporation,

     (b)  upon consummation of the transaction which resulted in the shareholder
          becoming an interested shareholder, the interested shareholder owns at
          least 85% of the voting stock of the corporation outstanding at the
          time the transaction commenced (excluding for purposes of determining
          the number of shares outstanding, shares owned by

               (1)  persons who are both directors and officers and

               (2) employee stock plans in certain circumstances), or

     (c)  on or after such date the business combination is approved by the
          board and authorized at an annual or special meeting of shareholders,
          and not by written consent, by the affirmative vote of at least 66
          2/3% of the outstanding voting stock which is not owned by the
          interested shareholder.

     A "business combination" includes a merger, consolidation, asset sale, or
other transaction resulting in a financial benefit to the interested
shareholder. An "interested shareholder" is a person who, together with
affiliates and associates, owns (or within three years, did own) 15% or more of
the corporation's voting stock.

     The restrictions imposed by Section 203 will not apply to a corporation if,
among other things:

     (a)  the corporation's original certificate of incorporation contains a
          provision expressly electing not to be governed by Section 203 or

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<PAGE>

     (b)  12 months have passed after the corporation, by action of its
          shareholders holding a majority of the outstanding stock, adopts an
          amendment to its certificate of incorporation or bylaws expressly
          electing not to be governed by Section 203.

     The restrictions imposed by Section 203 will apply to us since we have not
elected not to be governed by that section. Our Board of Directors approved of
Level 3 becoming an interested shareholder and, consequently, Section 203 would
not apply to any business combination with Level 3.

Liability and Indemnification of Directors and Officers

     Certain provisions of the DGCL and the Certificate of Incorporation and the
Bylaws relate to the limitation of liability and indemnification of our
directors and officers. These various provisions are described below.

     Our Certificate of Incorporation provides that our directors are not
personally liable to us or our shareholders for monetary damages for breach of
their fiduciary duties as a director to the fullest extent permitted by the
DGCL. Under the DGCL, directors would not be personally liable to us or our
shareholders for monetary damages for breach of their fiduciary duties as a
director, except for

     (a) any breach of the director's duty of loyalty to us or our shareholders,

     (b) acts or omissions not in good faith or involving intentional misconduct
         or a knowing violation of law,

     (c) any transaction from which the director derived improper personal
         benefit or

     (d) the unlawful payment of dividends or unlawful stock repurchases or
         redemptions.

     This exculpation provision may have the effect of reducing the likelihood
of derivative litigation against directors and may discourage or deter
shareholders or us from bringing a lawsuit against our directors for breach of
their fiduciary duties as directors. However, the provision does not affect
equitable remedies such as an injunction or rescission from being available.

     We will indemnify and hold harmless to the fullest extent permitted by the
DGCL each person who was or is a party or is threatened to be made a party to
any threatened, pending or completed action or proceeding. These include civil,
criminal, administrative or investigative proceedings, if that person is or was
a director or officer of RCN or is or was serving at our request as a director
or officer of another corporation, partnership, joint venture, trust or other
enterprise. We will also pay the expenses incurred in connection with these
proceedings before its final disposition to the fullest extent authorized by the
DGCL. This right to indemnification is a contract right. By action of our Board
of Directors, we provide indemnification to our employees and agents to the
extent our Board determines to be appropriate and authorized by the DGCL.

     We purchase and maintains insurance on behalf of any person who is or was a
director, officer, employee or agent of RCN, or is or was serving at our request
as a director, officer, employee or agent of another corporation, partnership,
joint venture, trust, employee benefit plan or other enterprise against any
liability asserted against him or her and incurred by him or her in any such
capacity, or arising out of his or her status, whether or not we would have the
power or the obligation to indemnify him or her against the liability under the
Certificate of Incorporation.

                                       48
<PAGE>

                         DESCRIPTION OF DEBT SECURITIES

     This prospectus describes certain general terms and provisions of the debt
securities. When we offer to sell a particular series of debt securities, we
will describe the specific terms for the securities in a supplement to this
prospectus. The prospectus supplement will also indicate whether the general
terms and provisions described in this prospectus apply to a particular series
of debt securities. The debt securities will be issued under an indenture
between us and The Chase Manhattan Bank, as trustee.

     We have summarized certain terms and provisions of the indenture. The
summary is not complete. The indenture has been incorporated by reference as an
exhibit to the registration statement for these securities that we have filed
with the SEC. You should read the indenture for the provisions which may be
important to you. Capitalized terms used in this summary have the meanings
specified in the indenture. The indenture is subject to and governed by the
Trust Indenture Act of 1939, as amended.

General

     The indenture will not limit the amount of debt securities which we may
issue. We may issue debt securities up to an aggregate principal amount as we
may authorize from time to time. The prospectus supplement will describe the
terms of any debt securities being offered, including:

     o     the designation, aggregate principal amount and authorized
           denominations;

     o     the maturity date;

     o     the interest rate, if any, and the method for calculating the
           interest rate;

     o     the interest payment dates and the record dates for the interest
           payments;

     o     any mandatory or optional redemption terms or prepayment, conversion,
           sinking fund or exchangeability or convertability provisions;

     o     the place where we will pay principal and interest;

     o     if other than denominations of $1,000 or multiples of $1,000, the
           denominations the debt securities will be issued in;

     o     whether the debt securities will be issued in the form of global
           securities or certificates;

     o     additional provisions, if any, relating to the defeasance of the debt
           securities;

     o     the currency or currencies, if other than the currency of the United
           States, in which principal and interest will be paid;

     o     whether the debt securities will be issuable in registered form
           or bearer form or both and, if bearer securities are issuable, any
           restrictions which apply to the exchange of one form for another and
           the offer, sale and delivery of bearer securities;

     o     any United States federal income tax consequences;

     o     the dates on which premium, if any, will be paid;

     o     our right, if any, to defer payment interest and the maximum length
           of this deferral period;

                                       49
<PAGE>

     o     any listing on a securities exchange;

     o     the initial public offering price; and

     o     other specific terms, including any additional events of default or
           covenants.

     As described in each prospectus supplement relating to any particular
series of debt securities we offer, the indenture may contain covenants
limiting:

     o     the incurrence of additional debt by us and certain of our
           subsidiaries and affiliates;

     o     the making of certain payments by us and certain of our subsidiaries
           and affiliates;

     o     business activities of us and certain of our subsidiaries and
           affiliates;

     o     the issuance of preferred stock of certain of our subsidiaries and
           affiliates;

     o     certain asset dispositions;

     o     certain transactions with affiliates;

     o     restrictions on dividend payments by certain subsidiaries and
           affiliates;

     o     a change of control of our company;

     o     issuance of certain guarantees;

     o     liens; and

     o     mergers and consolidations involving our company.

Book-Entry System

     Unless we specify otherwise in a prospectus supplement, debt securities of
any series may be issued under a book-entry system in the form of one or more
global securities (each, a "Global Security"). Each Global Security will be
deposited with, or on behalf of, a depositary, which will be The Depository
Trust Company, New York, New York (the "Depositary"). The Global Securities will
be registered in the name of the Depositary or its nominee.

     The Depositary has advised us that the Depositary is a limited purpose
trust company organized under the laws of the State of New York, a "banking
organization" within the meaning of the New York banking law, a member of the
Federal Reserve System, a "clearing corporation" within the meaning of the New
York Uniform Commercial Code, and a "clearing agency" registered pursuant to the
provisions of Section 17A of the Exchange Act. The Depositary was created to
hold securities of its participants and to facilitate the clearance and
settlement of securities transactions among its participants through electronic
book-entry changes in accounts of the participants, thereby eliminating the need
for physical movement of securities certificates. The Depositary's participants
include securities brokers and dealers, banks, trust companies, clearing
corporations, and certain other organizations, some of which (and/or their
representatives) own the Depositary. Access to the Depositary's book-entry
system is also available to others, such as banks, brokers, dealers, and trust
companies that clear through or maintain a custodial relationship with a
participant, either directly or indirectly.

                                       50
<PAGE>

     When a Global Security in issued in registered form, the Depositary will
credit, on its book-entry registration and transfer system, the respective
principal amounts of the debt securities represented by each Global Security to
the participants' accounts. The underwriters, dealers, or agents, if any, will
designate the accounts to be credited. If debt securities are offered and sold
directly by us, we will designate the accounts to be credited. Only participants
or persons that may hold interests through participants will be able to own
beneficial interest in the Global Security. Ownership of beneficial interests by
participants in the Global Security will be shown on, and the transfer of that
ownership interest will be effected only through, the participants' records. The
laws of some jurisdictions may require that certain purchasers of securities
take physical delivery of securities in definitive form, which may impair the
ability to transfer beneficial interests in a Global Security.

     So long as the Depositary or its nominee is the owner of record of a Global
Security, we consider the Depositary or its nominee the sole owner or holder of
the debt securities represented by the Global Security. Generally, owners of
beneficial interests in a Global Security will not (a) be entitled to have the
debt security represented by a Global Security registered in their names, (b)
receive or be entitled to receive physical delivery of debt securities in
definitive form and (c) be considered the owners or holders of the debt
securities. Accordingly, each person owning a beneficial interest in a Global
Security must rely on the Depositary's procedures. Persons who are not
participants must rely on the procedures of the participant through which it
owns its interest. We understand that under existing industry practices, if we
request any action of holders or if any owner of a beneficial interest in a
Global Security desires to give or take any action which a holder is entitled to
give or take under the indenture, the Depositary would authorize the
participants holding the relevant beneficial interests to give or take the
action. The participants would in turn authorize beneficial owners owning
through them to give or take action or would otherwise act upon the instruction
of beneficial owners holding through them.

     Payments of principal, premium, if any, and interest on debt securities
represented by a Global Security registered in the name of the Depositary or its
nominee will be made to the Depositary or nominee as the registered owner. None
of RCN, the trustee or any other agent of RCN or agent of the trustee will have
any responsibility or liability for any aspect of the records relating to or
payments made on account of beneficial ownership interests in the Global
Security or for maintaining, supervising, or reviewing any records relating to
such beneficial ownership interests.

     We have been advised by the Depositary that the Depositary will credit
participants' accounts with payments of principal, premium, if any, or interest
on the payment dates in amounts which are proportionate to their respective
beneficial interests in the principal amount of the Global Security as shown on
the Depositary's records. We expect that payments by participants to owners of
beneficial interests in the Global Security held through such participants will
be governed by standing instructions and customary practices, as is now the case
with securities held for the accounts of customers registered in "street name,"
and will be the responsibility of the participants.

     A Global Security may not be transferred except as a whole:

     o     by the Depositary to a nominee or successor of the Depositary or

     o     by a nominee of the Depositary to another nominee of the Depositary.

     A Global Security representing all but not part of an offering of debt
securities is exchangeable for debt securities in definitive form of like tenor
and terms if:

     o    the Depositary notifies us that it is unwilling or unable to
          continue as depositary for the Global Security or if at any time the
          Depositary is no longer eligible to be or in good standing as a
          clearing agency registered under the Exchange Act, and we do not
          appoint a successor depositary within 90 days after we receive notice
          or

                                       51
<PAGE>

     o    RCN in our sole discretion at any time decides not to have all
          of the debt securities represented in an by a Global Security and
          notifies the trustee.

     If a Global Security is exchangeable, then it is exchangeable for debt
securities registered in the names and in authorized denominations as the
Depositary directs.

Payments of Principal and Interest

     The payment of principal premium, if any, and interest on the debt
securities will rank equally with all of our unsecured and unsubordinated debt.

Events of Default

     When we use the term "Event of Default" in the indenture with respect to
the debt securities of any series, here are some examples of what we mean:

     (1)  default in paying interest on the debt securities when it becomes due
          and the default continues for a period of 30 days or more;

     (2)  default in paying principal, or premium, if any, on the debt
          securities when due;

     (3)  default in the performance, or breach, of any covenant in the
          indenture (other than defaults specified in clause (1) or (2) above)
          and the default or breach continues for a period of 30 days or more
          after we receive written notice from the trustee or the trustee
          receives notice from the holders of at least 25% in aggregate
          principal amount of the outstanding debt securities of the series;

     (4)  certain events of bankruptcy, insolvency, reorganization,
          administration or similar proceedings with respect to
          RCN or any material subsidiary has occurred; or

     (5)  any other Events of Default set forth in the prospectus supplement.

     If an Event of Default (other than an Event of Default specified in clause
(4) with respect to RCN) under the indenture occurs with respect to the debt
securities of any series and is continuing, then the trustee or the holders of
at least 25% in principal amount of the outstanding debt securities of that
series may by written notice, and the trustee at the request of the holders of
not less than 25% in principal amount of the outstanding debt securities of such
series will, require us to repay immediately the entire principal amount of the
outstanding debt securities of that series (or such lesser amount as may be
provided in the terms of the securities), together with all accrued and unpaid
interest and premium, if any.

     If an Event of Default under the indenture specified in clause (4) with
respect to RCN occurs and is continuing, then the entire principal amount of the
outstanding debt securities (or such lesser amount as may be provided in the
terms of the securities) will automatically become due immediately and payable
without any declaration or other act on the part of the trustee or any holder.

     After a declaration of acceleration or any automatic acceleration under
clause (4) described above, the holders of a majority in principal amount of
outstanding debt securities of any series may rescind this accelerated payment
requirement if all existing Events of Default, except for nonpayment of the
principal and interest on the debt securities of that series that has become due
solely as a result of the accelerated payment requirement, have been cured or
waived and if the rescission of acceleration would not conflict with any
judgment or decree. The holders of a majority in principal amount of the
outstanding debt securities of any series also have the right to waive past
defaults, except a default in paying principal or interest on any outstanding
debt security, or in respect of a covenant

                                       52
<PAGE>

or a provision that cannot be modified or amended without the consent of all
holders of the debt securities of that series.

     Holders of at least 25% in principal amount of the outstanding debt
securities of a series may seek to institute a proceeding only after they have
made written request, and offered reasonable indemnity, to the trustee to
institute a proceeding and the trustee has failed to do so within 60 days after
it received this notice. In addition, within this 60-day period the trustee must
not have received directions inconsistent with this written request by holders
of a majority in principal amount of the outstanding debt securities of that
series. These limitations do not apply, however, to a suit instituted by a
holder of a debt security for the enforcement of the payment of principal,
interest or any premium on or after the due dates for such payment.

     During the existence of an Event of Default, the trustee is required to
exercise the rights and powers vested in it under the indenture and use the same
degree of care and skill in its exercise as a prudent person would under the
circumstances in the conduct of that person's own affairs. If an Event of
Default has occurred and is continuing, the trustee is not under any obligation
to exercise any of its rights or powers at the request or direction of any of
the holders unless the holders have offered to the trustee reasonable security
or indemnity. Subject to certain provisions, the holders of a majority in
principal amount of the outstanding debt securities of any series 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.

     The trustee will, within 45 days after any Default occurs, give notice of
the Default to the holders of the debt securities of that series, unless the
Default was already cured or waived. Unless there is a default in paying
principal, interest or any premium when due, the trustee can withhold giving
notice to the holders if it determines in good faith that the withholding of
notice is in the interest of the holders.

     We are required to furnish to the trustee an annual statement as to
compliance with all conditions and covenants under the indenture.

Modification and Waiver

     The indenture may be amended or modified without the consent of any holder
of debt securities in order to:

     o     cure ambiguities, defects or inconsistencies;

     o     provide for the assumption of our obligations in the case of a merger
           or consolidation;

     o     make any change that would provide any additional rights or benefits
           to the holders of the debt securities of a series;

     o     add Guarantors with respect to the debt securities of a series;

     o     secure the debt securities of a series;

     o     establish the form or forms of debt securities of any series;

     o     maintain the qualification of the indenture under the Trust Indenture
           Act; or

     o     make any change that does not adversely affect the rights of any
           holder.

     Other amendments and modifications of the indenture or the debt securities
issued may be made with the consent of the holders of not less than a majority
of the aggregate principal amount of the outstanding debt securities of each
series affected by the amendment or modification (each series voting as a
separate class).

                                       53
<PAGE>

However, no modification or amendment may, without the consent of the holder of
each outstanding debt security affected:

     o    reduce the principal amount, or extend the fixed maturity, of the
          debt securities, alter or waive the redemption provisions of the debt
          securities;

     o    change the currency in which principal, any premium or interest is
          paid;

     o    reduce the percentage in principal amount outstanding of debt
          securities of any series which must consent to an amendment,
          supplement or waiver or consent to take any action;

     o    impair the right to institute suit for the enforcement of any payment
          on the debt securities;

     o    waive a payment default with respect to the debt securities or any
          Guarantee;

     o    reduce the interest rate or extend the time for payment of interest on
          the debt securities;

     o    adversely affect the ranking of the debt securities of any series; or

     o    release any Guarantor from any of its obligations under its
          Guarantee or the indenture, except in compliance with the terms of the
          indenture.

Consolidation, Merger, Sale of Assets, Etc.

     We will not consolidate or combine with or merge with or into or, directly
or indirectly, sell, assign, convey, lease, transfer or otherwise dispose of all
or substantially all of our properties and assets to any person or persons in a
single transaction or through a series of transactions, unless:

     o    RCN shall be the continuing person or, if RCN is not the
          continuing person, the resulting, surviving or transferee person (the
          "surviving entity") is a company organized and existing under the laws
          of the United States or any State or territory;

     o    the surviving entity will expressly assume all of our
          obligations under the debt securities and the indenture, and will, if
          required by law to effectuate the assumption, execute a supplemental
          indenture which will be delivered to the trustee and will be in form
          and substance reasonably satisfactory to the trustee;

     o    immediately after giving effect to such transaction or series of
          transactions on a pro forma basis, no Default has occurred and is
          continuing; and

     o    RCN or the surviving entity will have delivered to the trustee
          an officers' certificate and opinion of counsel stating that the
          transaction or series of transactions and a supplemental indenture, if
          any, complies with this covenant and that all conditions precedent in
          the indenture relating to the transaction or series of transactions
          have been satisfied.

     If any consolidation or merger or any sale, assignment, conveyance, lease,
transfer or other disposition of all or substantially all of our assets occurs
in accordance with the indenture, the successor corporation will succeed to, and
be substituted for, and may exercise every right and power of RCN under the
indenture with the same effect as if such successor corporation had been named
as RCN. Except for (1) any lease or (2) any sale, assignment, conveyance,
transfer, lease or other disposition to certain subsidiaries of RCN, we will be
discharged from all obligations and covenants under the indenture and the debt
securities.

                                       54
<PAGE>

Satisfaction and Discharge of the Indenture; Defeasance

     We may terminate our obligations under the indenture, when:

     o    either:

          -    all debt securities of any series issued that have been
               authenticated and delivered have been delivered to the trustee
               for cancellation; or

          -    all the debt securities of any series issued that have not been
               delivered to the trustee for cancellation will become due and
               payable (a "Discharge") under irrevocable arrangements
               satisfactory to the trustee for the giving of notice of
               redemption by such trustee in our name, and at our expense and we
               have irrevocably deposited or caused to be deposited with the
               trustee sufficient funds to pay and discharge the entire
               indebtedness on the series of debt securities to pay principal,
               interest and any premium;

     o    we have paid or caused to be paid all other sums then due and
          payable under the indenture; and

     o    we have delivered to the trustee an officers' certificate and an
          opinion of counsel, each stating that all conditions precedent under
          the indenture relating to the satisfaction and discharge of the
          indenture have been complied with.

     We may elect to have our obligations under the indenture discharged with
respect to the outstanding debt securities of any series ("legal defeasance").
Legal defeasance means that we will be deemed to have paid and discharged the
entire indebtedness represented by the outstanding debt securities of such
series under the indenture, except for:

     o    the rights of holders of the debt securities to receive principal,
interest and any premium when due;

     o    our obligations with respect to the debt securities concerning
          issuing temporary debt securities, registration of transfer of debt
          securities, mutilated, destroyed, lost or stolen debt securities and
          the maintenance of an office or agency for payment and money for
          security payments held in trust;

     o    the rights, powers, trusts, duties and immunities of the trustee; and

     o    the defeasance provisions of the indenture.

     In addition, we may elect to have our obligations released with respect to
certain covenants in the indenture ("covenant defeasance"). Any omission to
comply with these obligation will not constitute a Default or an Event of
Default with respect to the debt securities of any series. In the event covenant
defeasance occurs, certain events, not including non-payment, bankruptcy and
insolvency events, described under "Events of Default" will no longer constitute
an Event of Default for that series.

     In order to exercise either legal defeasance or covenant defeasance with
respect to outstanding debt securities of any series:

     o    we must irrevocably have deposited or caused to be deposited with
          the trustee as trust funds for the purpose of making the following
          payments, specifically pledged as security for, and dedicated solely
          to the benefits of the holders of the debt securities of a series:

          -    money in an amount;

                                       55
<PAGE>

          -    U.S. Government Obligations; or

          -    a combination of money and U.S. Government Obligations,

          in each case sufficient without reinvestment, in the written opinion
          of an internationally recognized firm of independent public
          accountants to pay and discharge, and which shall be applied by the
          trustee to pay and discharge, all of the principal, interest and any
          premium at due date or maturity or if we have made irrevocable
          arrangements satisfactory to the trustee for the giving of notice of
          redemption by the trustee in our name and at our expense, the
          redemption date;

     o    in the case of legal defeasance, we have delivered to the trustee
          an opinion of counsel stating that, under then applicable Federal
          income tax law, the holders of the debt securities of that series will
          not recognize gain or loss for federal income tax purposes as a result
          of the deposit, defeasance and discharge to be effected and will be
          subject to the same federal income tax as would be the case if the
          deposit, defeasance and discharge did not occur;

     o    in the case of covenant defeasance, we have delivered to the
          trustee an opinion of counsel to the effect that the holders of the
          debt securities of that series will not recognize gain or loss for
          U.S. federal income tax purposes as a result of the deposit and
          covenant defeasance to be effected and will be subject to the same
          federal income tax as would be the case if the deposit and covenant
          defeasance did not occur;

     o    no Default with respect to the outstanding debt securities of
          that series has occurred and is continuing at the time of such deposit
          after giving effect to the deposit or, in the case of legal
          defeasance, no Default relating to bankruptcy or insolvency has
          occurred and is continuing at any time on or before the 91st day after
          the date of such deposit, it being understood that this condition is
          not deemed satisfied until after the 91st day;

     o    the legal defeasance or covenant defeasance will not cause the
          trustee to have a conflicting interest within the meaning of the Trust
          Indenture Act, assuming all debt securities of a series were in
          default within the meaning of such Act;

     o    the defeasance or covenant defeasance will not result in a breach
          or violation of, or constitute a default under, any other agreement or
          instrument to which we are a party;

     o    the legal defeasance or covenant defeasance will not result in
          the trust arising from such deposit constituting an investment company
          within the meaning of the Investment Company Act of 1940, as amended,
          unless the trust is registered under such Act or exempt from
          registration; and

     o    we have delivered to the trustee an officers' certificate and an
          opinion of counsel stating that all conditions precedent with respect
          to the defeasance or covenant defeasance have been complied with.

                                       56
<PAGE>

                              PLAN OF DISTRIBUTION

     We may sell the securities in any of three ways (or in any combination):
(a) through underwriters or dealers; (b) directly to a limited number of
purchasers or to a single purchaser; or (c) through agents. The prospectus
supplement will set forth the terms of the offering of such securities,
including

          (a)  the name or names of any underwriters, dealers or agents and the
               amounts of securities underwritten or purchased by each of them,

          (b)  the initial public offering price of the securities and the
               proceeds to us and any discounts, commissions or concessions
               allowed or reallowed or paid to dealers, and

          (c)  any securities exchanges on which the securities may be listed.

      Any initial public offering price and any discounts or concessions allowed
or reallowed or paid to dealers may be changed from time to time.

     If underwriters are used in the sale of any securities, the securities will
be acquired by the underwriters for their own account and may be resold from
time to time in one or more transactions, including negotiated transactions, at
a fixed public offering price or at varying prices determined at the time of
sale. The securities may be either offered to the public through underwriting
syndicates represented by managing underwriters, or directly by underwriters.
Generally, the underwriters' obligations to purchase the securities will be
subject to certain conditions precedent. The underwriters will be obligated to
purchase all of the securities if they purchase any of the securities.

     We may sell the securities through agents from time to time. The prospectus
supplement will name any agent involved in the offer or sale of the securities
and any commissions we pay to them. Generally, any agent will be acting on a
best efforts basis for the period of its appointment.

     We may authorize underwriters, dealers or agents to solicit offers by
certain purchasers to purchase the securities from at the public offering price
set forth in the prospectus supplement pursuant to delayed delivery contracts
providing for payment and delivery on a specified date in the future. The
contracts will be subject only to those conditions set forth in the prospectus
supplement, and the prospectus supplement will set forth any commissions we pay
for solicitation of these contracts.

   
      This prospectus, including any amendment or supplement, may also be used
in connection with sales of up to 1,107,539 shares of our common stock issued
to BECO under the terms of an exchange agreement between BECO and RCN.  The
exchange agreement provides BECO with rights to demand that we register such
stock or to participate in underwritten offerings of our common stock.  We
have notified BECO that we do not authorize them to sell common stock under
this prospectus unless they provide us with reasonable advance written notice
of their intent to make such sales.  Sales by BECO may be made directly,
through underwriters, dealers or agents or through any other legally available
means.  In connection with any resales by BECO, a prospectus supplement, if
required, will be filed under Rule 424(b) under the Securities Act, disclosing
the number of shares involved and other details of such resale to the extent
appropriate.
    

     Agents and underwriters may be entitled to indemnification by us against
certain civil liabilities, including liabilities under the Securities Act, or to
contribution with respect to payments which the agents or underwriters may be
required to make in respect thereof. Agents and underwriters may be customers
of, engage in transactions with, or perform services for us in the ordinary
course of business.

                                       57
<PAGE>

                                  LEGAL MATTERS

     The validity of the securities in respect of which this prospectus is being
delivered will be passed on for us by Davis Polk & Wardwell, New York, New York.

                                     EXPERTS

     The consolidated financial statements of RCN Corporation as of December 31,
1998 and 1997, and for the years ended December 31, 1998, 1997 and 1996,
appearing in the RCN 10-K for the year ended December 31, 1998 and incorporated
by reference into this registration statement have been audited by
PricewaterhouseCoopers LLP, independent accountants, as set forth in their
report thereon incorporated by reference herein, and are included in reliance
upon such report given upon the authority of such firm as experts in accounting
and auditing.

     The financial statements of Erols Internet, Inc. at December 31, 1996 and
1997 and for the period from August 1, 1995 (inception) to December 31, 1995 and
for the years ended December 31, 1996 and 1997, appearing in the RCN 8-K dated
May 8, 1998 and incorporated by reference into the registration statement have
been audited by Ernst & Young LLP, independent auditors, as set forth in their
report thereon incorporated by reference herein, and are included in reliance
upon such report given upon the authority of such firm as experts in accounting
and auditing.

                                       58
<PAGE>

                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14.  Other Expenses of Issuance and Distribution

     The following table sets forth the costs and expenses payable by the
Registrant in connection with the sale of the securities being registered
hereby. All amounts are estimates except the registration fee.

                                                                  Amount to
                                                                   be Paid
                                                                 -----------
Registration fee................................................ $   278,000
Printing........................................................     250,000
Legal fees and expenses.........................................     500,000
Accounting fees and expenses....................................     200,000
Miscellaneous...................................................      25,000
                                                                 -----------
   TOTAL........................................................ $ 1,253,000
                                                                 ===========

Item 15.  Indemnification of Directors and Officers

     Reference is made to Section 102(b)(7) of the Delaware General Corporation
Law, which enables a corporation in its original certificate of incorporation or
an amendment thereto to eliminate or limit the personal liability of a director
for violations of the director's fiduciary duty, except (i) for any breach of
the director's duty of loyalty to the corporation or it stockholders, (ii) for
acts or omissions not in good faith or which involve intentional misconduct or a
knowing violation of law, (iii) pursuant to Section 174 of the Delaware General
Corporation Law (providing for liability of directors for the unlawful payment
of dividends or unlawful stock purchases or redemptions) or (iv) for any
transaction from which a director derived an improper personal benefit.

     Section 145 of the Delaware General Corporation Law empowers RCN to
indemnify, subject to the standards set forth therein, any person in connection
with any action, suit or proceeding brought before or threatened by reason of
the fact that the person was a director, officer, employee or agent of such
company, or is or was serving as such with respect to another entity at the
request of such company. The Delaware General Corporation Law also provides that
RCN may purchase insurance on behalf of any such director, officer, employee or
agent.

     RCN's Amended and Restated Articles of Incorporation provides in effect for
the elimination of the personal liability of RCN directors for breaches of
fiduciary duty and for the indemnification by RCN of each director and officer
of RCN, in each case, to the fullest extent permitted by applicable law.

     RCN purchases and maintains insurance on behalf of any person who is or was
a director, officer, employee or agent of RCN, or is or was serving at the
request of RCN as a director, officer, employee or agent of another corporation,
partnership, joint venture, trust, employee benefit plan or other enterprise
against any liability asserted against him or her and incurred by him or her in
any such capacity, or arising out of his or her status as such, whether or not
RCN would have the power or the obligation to indemnify him or her against such
liability under the provisions of the RCN Certificate of Incorporation.

Item 16.  Exhibits and Financial Statement Schedules

      (a)  Exhibits

                                      II-1

<PAGE>

<TABLE>

Exhibit
  No.                           Document
- -------                         --------
<S>       <C>
   

1.1**     Form of Underwriting Agreement
    

2.1       Form of Distribution Agreement among C-TEC Corporation, Cable
          Michigan, Inc. and RCN Corporation (incorporated by reference to
          Exhibit 2.1 to Amendment No. 2 to RCN's Information Statement on
          Form 10/A ("Form 10") filed on September 5, 1997)

2.2       Tax Sharing Agreement by and among C-TEC Corporation, Cable Michigan,
          Inc. and the Registrant (incorporated by reference to Exhibit 10.1 to
          RCN's Form 10)

2.3       Agreement and Plan of Merger dated as of January 21, 1998 among
          Erols Internet, Inc., Erol Onaran, Gold & Appel Transfer, S.A., RCN
          Corporation and ENET Holding, Inc. (incorporated by reference to
          Exhibit 2.1 to RCN's Current Report on Form 8-K ("March 1998 8-K")
          filed on March 6, 1998)

2.4       Amendment No. 1 to Agreement and Plan of Merger dated as of January
          21, 1998 among Erols Internet, Inc., Erol Onaran, Gold & Appel
          Transfer, S.A., RCN Corporation and ENET Holding, Inc. (incorporated
          by reference to Exhibit 2.2 to RCN's March 1998 8-K)
   

3.1**     Certificate of Designations, Preferences and Rights of Series A 7%
          Senior Convertible Preferred Stock dated as of April 7, 1999
    

4.1       Indenture dated as of February 6, 1998 between RCN, as Issuer, and
          The Chase Manhattan Bank, as trustee, with respect to the 9.80%
          Senior Discount Notes due 2008 (incorporated by reference to Exhibit
          4.1 to RCN's Registration Statement on Form S-4 (Commission File No.
          333-48487) ("1998 Form S-4") filed on March 23, 1998)

4.2       Form of the 9.80% Senior Discount Notes due 2008, Series B (included
          in Exhibit 4.1) (incorporated by reference to Exhibit 4.2 to RCN's
          1998 Form S-4)

4.3       Indenture dated as of October 17, 1997 between RCN, as Issuer, and
          The Chase Manhattan Bank, as trustee, with respect to the 10% Senior
          Notes due 2007 (incorporated by reference to Exhibit 4.1 to RCN's
          Registration Statement on Form S-4 (Commission File No. 333-41081)
          ("Form S-4") filed on November 26, 1997)

4.4       Form of the 10% Senior Exchange Notes due 2007 (included in Exhibit
          4.4) (incorporated by reference to Exhibit 4.2 to RCN's Form S-4)

4.5       Indenture dated as of October 17, 1997 between RCN, as Issuer, and
          The Chase Manhattan Bank, as trustee, with respect to the 111/8%
          Senior Discount Notes due 2007 (incorporated by reference to Exhibit
          4.3 to RCN's Form S-4)

4.6       Form of the 11 1/8% Senior Discount Exchange Notes due 2007 (included
          in Exhibit 4.6) (incorporated by reference to Exhibit 4.4 to RCN's
          Form S-4)

4.7       Indenture dated June 24, 1998 between RCN, as Issuer, and The Chase
          Manhattan Bank, as trustee, with respect to the 11% Senior Discount
          Notes due 2008 (incorporated by Reference to Exhibit 4.8 to RCN's
          Registration Statement on Form S-1 (Commission File No. 333-55673))

4.8       Form of 11% Senior Discount Note due 2008 (included in Exhibit 4.8)
          (incorporated by reference to Exhibit 4.8 to RCN's Registration
          Statement on Form S-1 (Commission File No. 333-55673))


                                     II-2
<PAGE>



4.9       Escrow Agreement dated as of October 17, 1997 among The Chase
          Manhattan Bank, as escrow agent, The Chase Manhattan Bank, as
          trustee under the Indenture (as defined therein), and RCN
          (incorporated by reference to Exhibit 4.6 to RCN's Form S-4)
   

4.10*     Credit Agreement dated as of July 1, 1997 among C-TEC Cable Systems,
          Inc., ComVideo Systems, Inc., C-TEC Cable Systems of New York, Inc.
          and First Union National Bank, as agent (incorporated by reference
          to Exhibit 4.1 to RCN's Form 10)

4.11**    Form of Indenture relating to Debt Securities issued hereunder

5.1**     Opinion of Davis Polk & Wardwell

11.1      Statement regarding Computation of Per Share Earnings (included in the
          Notes to the Consolidated Financial Statements)

12.1**    Statement re computation of ratios

23.1      Consent of PricewaterhouseCoopers LLP with respect to RCN Corporation

23.2**    Consent of Ernst & Young LLP, Independent Auditors, with respect to
          Erols Internet, Inc.

24.1      Power of Attorney (included on the signature page of the Registration
          Statement)

25.1**    Statement of Eligibility of Trustee
    

- ---------
*Exhibits and schedules which have not been filed with Exhibit 4.10 will
be provided to the Commission by the registrant upon request.

**Previously filed.
</TABLE>


Item 17.  Undertakings

      (a)  The undersigned Registrant hereby undertakes:

          (1) To file, during any period in which offers or sales are being
     made of securities registered hereby, a post-effective amendment to this
     registration statement:

               (i)  to include any prospectus required by Section 10(a)(3) of
          the Securities Act of 1933;

              (ii) to reflect in the prospectus any facts or events arising
          after the effective date of the registration statement (or the most
          recent post-effective amendment thereof) which, individually or in
          the aggregate, represent a fundamental change in the information set
          forth in the registration statement. Notwithstanding the foregoing,
          any increase or decrease in volume of securities offered (if the
          total dollar value of securities offered would not exceed that which
          was registered) and any deviation from the low or high end of the
          estimated maximum offering range may be reflected in the form of
          prospectus filed with the Securities and Exchange Commission
          pursuant to Rule 424(b) under the Securities Act of 1933 if, in the
          aggregate, the changes in volume and price represent no more than a
          20% change in the maximum aggregate offering price set forth in the
          "Calculation of Registration Fee" table in the effective
          registration statement;

             (iii) to include any material information with respect to the
          plan of distribution not previously disclosed in the registration
          statement or any material change to such information in the
          registration statement;




                                     II-3
<PAGE>




          provided, however, that the undertakings set forth in paragraph (i)
          and (ii) above do not apply if the information required to be
          included in a post-effective amendment by those paragraphs is
          contained in periodic reports filed by the registrant pursuant to
          section 13 or section 15(d) of the Securities Exchange Act of 1934
          that are incorporated by reference in this registration statement.

          (2) That, for the purpose of determining any liability under the
     Securities Act of 1933, each such post-effective amendment shall be
     deemed to be a new registration statement relating to the securities
     offered herein, and the offering of such securities at that time shall be
     deemed to be the initial bona fide offering thereof.

          (3) To remove from registration by means of a post-effective
     amendment any of the securities being registered which remain unsold at
     the termination of the offering.

     (b)  The undersigned registrant hereby understands that, for purposes of
          determining any liability under the Securities Act of 1933, each
          filing of the registrant's annual report pursuant to section 13(a)
          or section 15(d) of the Securities Exchange Act of 1934 that is
          incorporated by reference in the registration statement shall be
          deemed to be a new registration statement relating to the securities
          offered herein, and the offering of such securities at that time
          shall be deemed to be the initial bona fide offering thereof.

      (c) Insofar as indemnification for liabilities arising under the
          Securities Act of 1933 may be permitted to directors, officers and
          controlling persons of the registrants pursuant to the foregoing
          provisions, or otherwise, the registrants have been advised that in
          the opinion of the Securities and Exchange Commission such
          indemnification is against public policy as expressed in the Act and
          is, therefore, unenforceable. In the event that a claim for
          indemnification against such liabilities (other than the payment by
          the registrant of expenses incurred or paid by a director, officer
          or controlling person of the registrant in the successful defense of
          any action, suit or proceeding) is asserted by such director,
          officer or controlling person in connection with the securities
          being registered, the registrants will, unless in the opinion of
          their counsel the matter has been settled by controlling precedent,
          submit to a court of appropriate jurisdiction the question whether
          such indemnification by it is against public policy as expressed in
          the Act and will be governed by the final adjudication of such
          issue.


                                     II-4
<PAGE>


                                  SIGNATURES

   

     Pursuant to the requirements of the Securities Act of 1933, the
registrant certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-3 and has duly caused this
amendment No.1 to the registration statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Princeton, State of New
Jersey, on May 4, 1999.
    

                                       RCN CORPORATION


                                       By: /s/ Bruce C. Godfrey
                                           -----------------------------------
                                           BRUCE C. GODFREY
                                           Executive Vice President and Chief
                                           Financial Officer

     Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed below by the following persons in the
capacities and on the dates indicated.

<TABLE>

            Signature                         Title                             Date
            ---------                         -----                             ----
<S>                                  <C>                                  <C>
   

      /s/ David C. McCourt*          Director, Chairman and Chief          May 4, 1999
- ----------------------------------     Executive Officer
          David C. McCourt

     /s/ Michael J. Mahoney*         Director, President and Chief         May 4, 1999
- ----------------------------------     Operating Officer
         Michael J. Mahoney

        /s/ Bruce Godfrey            Director, Executive Vice President    May 4, 1999
- ----------------------------------     and Chief Financial Officer
            Bruce C. Godfrey

       /s/ James Q. Crowe*
- ----------------------------------   Director                              May 4, 1999
           James Q. Crowe

       /s/ Alfred Fasola*
- ----------------------------------   Director                              May 4, 1999
           Alfred Fasola

      /s/ Stuart E. Graham*
- ----------------------------------   Director                              May 4, 1999
          Stuart E. Graham

      /s/ Richard R. Jaros*
- ----------------------------------   Director                              May 4, 1999
          Richard R. Jaros

         /s/ Thomas May*
- ----------------------------------   Director                              May 4, 1999
             Thomas May


                                     II-5
<PAGE>


   /s/ Thomas P. O'Neill, III*
- ----------------------------------   Director                              May 4, 1999
       Thomas P. O'Neill, III

        /s/ Eugene Roth*
- ----------------------------------   Director                              May 4, 1999
            Eugene Roth

     /s/ Walter Scott, Jr.*
- ----------------------------------   Director                              May 4, 1999
         Walter Scott, Jr.

     /s/ Michael B. Yanney*
- ----------------------------------   Director                              May 4, 1999
         Michael B. Yanney

     /s/ Ralph S. Hromisin*
- ----------------------------------   Senior Vice President and Chief       May 4, 1999
         Ralph S. Hromisin             Accounting Officer
    


</TABLE>


*By: /s/ Bruce C. Godfrey
    ------------------------------
         Bruce C. Godfrey
         Attorney-in-fact

                                     II-6

<PAGE>


                                 EXHIBIT INDEX

<TABLE>

Exhibit
  No.                       Document
- -------                     --------
<S>        <C>

   
1.1**      Form of Underwriting Agreement
    

2.1        Form of Distribution Agreement among C-TEC Corporation, Cable
           Michigan, Inc. and RCN Corporation (incorporated by reference to
           Exhibit 2.1 to Amendment No. 2 to RCN's Information Statement on
           Form 10/A ("Form 10") filed on September 5, 1997)

2.2        Tax Sharing Agreement by and among C-TEC Corporation, Cable Michigan,
           Inc. and the Registrant (incorporated by reference to Exhibit 10.1 to
           RCN's Form 10)

2.3        Agreement and Plan of Merger dated as of January 21, 1998 among
           Erols Internet, Inc., Erol Onaran, Gold & Appel Transfer, S.A., RCN
           Corporation and ENET Holding, Inc. (incorporated by reference to
           Exhibit 2.1 to RCN's Current Report on Form 8-K ("March 1998 8-K")
           filed on March 6, 1998)

2.4        Amendment No. 1 to Agreement and Plan of Merger dated as of January
           21, 1998 among Erols Internet, Inc., Erol Onaran, Gold & Appel
           Transfer, S.A., RCN Corporation and ENET Holding, Inc.
           (incorporated by reference to Exhibit 2.2 to RCN's March 1998 8-K)

   
3.1**      Certificate of Designations, Preferences and Rights of Series A 7%
           Senior Convertible Preferred Stock dated as of April 7, 1999
    

4.1        Indenture dated as of February 6, 1998 between RCN, as Issuer, and
           The Chase Manhattan Bank, as trustee, with respect to the 9.80%
           Senior Discount Notes due 2008 (incorporated by reference to
           Exhibit 4.1 to RCN's Registration Statement on Form S-4 (Commission
           File No. 333-48487) ("1998 Form S-4") filed on March 23, 1998)

4.2        Form of the 9.80% Senior Discount Notes due 2008, Series B
           (included in Exhibit 4.1) (incorporated by reference to Exhibit 4.2
           to RCN's 1998 Form S-4)

4.3        Indenture dated as of October 17, 1997 between RCN, as Issuer, and
           The Chase Manhattan Bank, as trustee, with respect to the 10%
           Senior Notes due 2007 (incorporated by reference to Exhibit 4.1 to
           RCN's Registration Statement on Form S-4 (Commission File No.
           333-41081) ("Form S-4") filed on November 26, 1997)

4.4        Form of the 10% Senior Exchange Notes due 2007 (included in Exhibit
           4.4) (incorporated by reference to Exhibit 4.2 to RCN's Form S-4)

4.5        Indenture dated as of October 17, 1997 between RCN, as Issuer, and
           The Chase Manhattan Bank, as trustee, with respect to the 11 1/8%
           Senior Discount Notes due 2007 (incorporated by reference to
           Exhibit 4.3 to RCN's Form S-4)

4.6        Form of the 11 1/8% Senior Discount Exchange Notes due 2007
           (included in Exhibit 4.6) (incorporated by reference to Exhibit 4.4
           to RCN's Form S-4)

4.7        Indenture dated June 24, 1998 between RCN, as Issuer, and The Chase
           Manhattan Bank, as trustee, with respect to the 11% Senior Discount
           Notes due 2008 (incorporated by Reference to Exhibit 4.8 to RCN's
           Registration Statement on Form S-1 (Commission File No. 333-55673))

4.8        Form of 11% Senior Discount Note due 2008 (included in Exhibit 4.8)
           (incorporated by reference to Exhibit 4.8 to RCN's Registration
           Statement on Form S-1 (Commission File No. 333-55673))


                                     II-7
<PAGE>

   

4.9        Escrow Agreement dated as of October 17, 1997 among The Chase
           Manhattan Bank, as escrow agent, The Chase Manhattan Bank, as
           trustee under the Indenture (as defined therein), and RCN
           (incorporated by reference to Exhibit 4.6 to RCN's Form S-4)

4.10*      Credit Agreement dated as of July 1, 1997 among C-TEC Cable
           Systems, Inc., ComVideo Systems, Inc., C-TEC Cable Systems of New
           York, Inc. and First Union National Bank, as agent (incorporated by
           reference to Exhibit 4.1 to RCN's Form 10)

4.11**     Form of Indenture relating to Debt Securities issued hereunder

5.1**      Opinion of Davis Polk & Wardwell

11.1       Statement regarding Computation of Per Share Earnings (included in
           the Notes to the Consolidated Financial Statements)

12.1**     Statement re computation of ratios

23.1       Consent of PricewaterhouseCoopers LLP with respect to RCN
           Corporation

23.2**     Consent of Ernst & Young LLP, Independent Auditors, with respect to
           Erols Internet, Inc.

24.1       Power of Attorney (included on the signature page of the
           Registration Statement)

25.1**     Statement of Eligibility of Trustee
    

</TABLE>

- --------
*Exhibits and schedules which have not been filed with Exhibit 4.10 will be
provided to the Commission by the registrant upon request.

**Previously filed.

                                     II-8


                                                                Exhibit 23.1

                       CONSENT OF INDEPENDENT ACCOUNTANTS

     We consent to the incorporation by reference in this Registration Statement
of RCN Corporation on Form S-3 and the related Prospectus, of our report dated
March 18, 1999 on our audits of the consolidated financial statements of RCN
Corporation as of December 31, 1998 and 1997 and for the years ended December
31, 1998, 1997 and 1996. We also consent to the reference of our Firm under the
caption "Experts."

/s/ PricewaterhouseCoopers LLP

2400 Eleven Penn Center
Philadelphia, Pennsylvania
April 27, 1999


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