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 |