Exhibit 21
PRINCIPAL SUBSIDIARIES OF
AT&T INC., AS OF DECEMBER 31, 2010
2010 AT&T INC. REPORT TO STOCKHOLDERS
SECURITIES AND EXCHANGE COMMISSION ("SEC")
FORM 10-K filed February 25, 2011
Legal Name
|
State of Incorporation/Formation
|
Conducts Business Under
|
Illinois Bell Telephone
Company
|
Illinois
|
AT&T Illinois;
AT&T Wholesale
|
Indiana Bell Telephone
Company, Incorporated
|
Indiana
|
AT&T Indiana;
AT&T Wholesale
|
Michigan Bell
Telephone Company
|
Michigan
|
AT&T Michigan;
AT&T Wholesale
|
Nevada Bell
Telephone Company
|
Nevada
|
AT&T Nevada;
AT&T Wholesale
|
Pacific Bell
Telephone Company
|
California
|
AT&T California;
AT&T Wholesale;
AT&T DataComm
|
AT&T International, Inc.
|
Delaware
|
AT&T International
|
SBC Internet Services, Inc.
|
California
|
AT&T Internet Services;
AT&T Entertainment Services
|
SBC Long Distance, LLC
|
Delaware
|
AT&T Long Distance
|
AT&T Teleholdings, Inc.
|
Delaware
|
AT&T Midwest;
AT&T West;
AT&T East
|
Southwestern Bell
Telephone Company
|
Missouri
|
AT&T Arkansas; AT&T Kansas;
AT&T Missouri; AT&T Oklahoma;
AT&T Texas; AT&T Southwest;
AT&T DataComm; AT&T Wholesale
|
Southwestern Bell
Yellow Pages, Inc.
|
Missouri
|
AT&T Advertising Solutions
|
The Ohio Bell
Telephone Company
|
Ohio
|
AT&T Ohio;
AT&T Wholesale
|
The Southern New
England Telephone Company
|
Connecticut
|
AT&T Connecticut;
AT&T Woodbury
|
Wisconsin Bell, Inc.
|
Wisconsin
|
AT&T Wisconsin;
AT&T Wholesale
|
Legal Name
|
State of Incorporation/Formation
|
Conducts Business Under
|
AT&T Corp.
|
New York
|
AT&T Corp.; AT&T;
ACC Business; AT&T Wholesale;
Lucky Dog Phone Co.; SmarTalk;
ConQuest; CQTalk!;
AT&T Business Solutions;
AT&T Advanced Solutions
|
AT&T Communications of California, Inc.
|
California
|
same
|
AT&T Communications of the Mountain States, Inc.
|
Colorado
|
Conquest; SmarTalk;CQTalk!;
|
AT&T Communications of NJ, L.P.
|
Delaware
|
same
|
AT&T Communications of New York, Inc.
|
New York
|
same
|
AT&T Communications of Illinois,
Inc.
|
Illinois
|
SmarTalk; ConQuest; Lucky Dog Phone Co.;
ACC Business
|
AT&T Communications of the Southern States, LLC
|
Delaware
|
ACC Business; SmarTalk;
AT&T; Conquest; CQTalk!;
Lucky Dog Phone Co.
|
Teleport Communications New York
|
New York
|
same
|
BellSouth Corporation
|
Georgia
|
AT&T South
|
BellSouth Telecommunications, Inc.
|
Georgia
|
AT&T Southeast
AT&T Alabama
AT&T Florida
AT&T Georgia
AT&T Kentucky
AT&T Louisiana
AT&T Mississippi
AT&T North Carolina
AT&T South Carolina
AT&T Tennessee
|
Legal Name
|
State of Incorporation/Formation
|
Conducts Business Under
|
AT&T Mobility LLC
|
Delaware
|
AT&T Mobility
|
AT&T Mobility II, LLC
|
Delaware
|
AT&T Mobility
|
New Cingular Wireless Services, Inc.
|
Delaware
|
AT&T Mobility
|
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