<PAGE>
===============================================================================
/------------------------------/
/ OMB APPROVAL /
/------------------------------/
/ OMB Number: 3235-0104 /
/ Expires: December 31, 2001 /
/ Estimated average burden /
/ hours per response...... 0.5 /
/------------------------------/
+--------+
| FORM 3 | U.S. SECURITIES AND EXCHANGE COMMISSION
+--------+ WASHINGTON, D.C. 20549
INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES
Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934,
Section 17(a) of the Public Utility Holding Company Act of 1935 or
Section 30(f) of the Investment Company Act of 1940
(Print or Type Responses)
--------------------------------------------------------------------------------
1. Name and Address of Reporting Person*
Nippon Telegraph and Telephone Corporation
----------------------------------------------------------------------------
(Last) (First) (Middle)
3-1 Otemachi 2-chome
----------------------------------------------------------------------------
(Street)
Chiyoda-ku Tokyo 100-8116, Japan
----------------------------------------------------------------------------
(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year) 12/27/00
--------------
3. IRS Identification Number of Reporting Person if an Entity
(Voluntary)
--------------
4. Issuer Name and Ticker or Trading Symbol AT&T Corp. (AWE)
-----------------------------------
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)
Director Officer X 10% Owner Other
--- --- (give title below) --- --- (specify below)
----------------------------------------------------------------------------
6. If Amendment, Date of Original (Month/Day/Year)
----------------------------
7. Individual or Joint Group Filing (Check Applicable Line)
Form Filed by One Reporting Person
---
X Form filed by More than One Reporting Person
---
TABLE I--NON-DERIVATIVE SECURITIES BENEFICIALLY OWNED
<TABLE>
<CAPTION>
--------------------------------------------------------------------------------
1. Title 2. Amount of 3. Ownership Form: 4. Nature of
of Securities Bene- Direct (D) or Indirect Bene-
Security ficially Owned Indirect (I) ficial Ownership
(Instr. 4) (Instr. 4) (Instr. 5) (Instr. 5)
--------------------------------------------------------------------------------
<S> <C> <C> <C>
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
</TABLE>
Reminder: Report on a separate line for each class of securities beneficially
owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instructions
5(b)(v).
Potential persons who are to respond to the collection of information contained
in this form are not required to respond unless the form displays a currently
valid OMB Number.
(Over)
SEC 1473 (3-99)
<PAGE>
FORM 3 (continued)
TABLE II--DERIVATIVE SECURITIES BENEFICIALLY OWNED
(e.g., puts, calls, warrants, options, convertible securities)
<TABLE>
<CAPTION>
------------------------------------------------------------------------------------------------------------------------------------
1. Title of Derivative 2. Date Exer- 3. Title and Amount of Securities 4. Conversion 5. Ownership 6. Nature of In-
Security (Instr. 4) cisable and Underlying Derivative Security or Form of direct Bene-
Expiration (Instr. 4) Exercise Derivative ficial
Date Price Security: Ownership
(Month/Day/ of Direct (D) (Instr. 5)
Year) Derivative or In-
---------------------------------------------------- Security direct (I)
Date Expira- Amount or (Instr. 5)
Exer- tion Title Number of
cisable Date Shares
------------------------------------------------------------------------------------------------------------------------------------
<S> <C> <C> <C> <C> <C> <C> <C>
------------------------------------------------------------------------------------------------------------------------------------
Wireless Group Preferred Wireless By Nippon Tele-
Tracking Stock 01/22/01(1) N/A Group Common Stock 448,004,162(2) 500-for-1 I graph and Tele-
phone Corpora-
tion's approximate
67% ownership in
NTT DoCoMo, Inc.
and DCM Capital
USA (UK) Limited
------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>
Explanation of Responses:
(1) These shares are potentially issuable, subject to certain conditions, and
therefore exercisable from and after January 15, 2001.
(2) These shares are directly beneficially owned by DCM Capital USA (UK)
Limited. Includes warrants to acquire shares of Wireless Group Preferred
Tracking Stock convertible into 41,748,273 shares of Wireless Group Common
Stock.
/s/ Kanji Koide 1/5/01
------------------------------- -----------------
Kanji Koide, Senior Vice Date
President on behalf of Nippon
Telegraph and Telephone
Corporation
* If the form is filed by more than one reported person, see Instruction
5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal
Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed.
If space is insufficient, See Instruction 6 for procedure.
Potential persons who are to respond to the collection of information contained
in this form are not required to respond unless the form displays a currently
valid OMB Number.
Page 2
<PAGE>
Joint Filer Information
-----------------------
Name: NTT DoCoMo, Inc.
Address: Sanno Park Tower
11-1, Nagata-cho 2-chome
Chiyoda-ku
Tokyo, Japan 100-6150
Designated Filer: Nippon Telegraph and Telephone
Corporation
Issuer and Ticker Symbol: AT&T Corp. (AWE)
Date of Event Requiring Statement: 12/27/00
Signature:
NTT DOCOMO, INC.
By: /s/ Yoshinori Uda
-----------------------------------
Name: Yoshinori Uda
Title: Senior Executive Vice President
<PAGE>
Joint Filer Information
-----------------------
Name: DCM Capital USA (UK) Limited
Address: 1st Floor, 14-18 City Road
Cardiff CF24 3DL
England
Designated Filer: Nippon Telegraph and Telephone
Corporation
Issuer and Ticker Symbol: AT&T Corp. (AWE)
Date of Event Requiring Statement: 12/27/00
Signature:
DCM CAPITAL USA (UK) LIMITED.
By: /s/ Masao Nakamura
----------------------------
Name: Masao Nakamura
Title: Chairman
