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10-K primary document
T · Annual Report (Form 10-K) · Filed February 9, 2026

At&T Inc — 10-K exhibit

ex-21ye2025.htm
At&T Inc on Boardroom Alpha
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Exhibit 21
 
PRINCIPAL SUBSIDIARIES OF

AT&T INC., AS OF DECEMBER 31, 2025

2025 AT&T INC. REPORT TO STOCKHOLDERS

SECURITIES AND EXCHANGE COMMISSION ("SEC")

FORM 10-K filed February 9, 2026

Legal NameState of Incorporation/FormationConducts Business Under
Illinois Bell Telephone
  Company, LLC
 
Illinois
AT&T Illinois;
AT&T Wholesale
Indiana Bell Telephone
  Company, LLC
 
Indiana
AT&T Indiana;
AT&T Wholesale
Michigan Bell
  Telephone Company, LLC
 
Michigan
AT&T Michigan;
AT&T Wholesale
Nevada Bell
  Telephone Company, LLC
 
Nevada
AT&T Nevada;
AT&T Wholesale
Pacific Bell
  Telephone Company
California
AT&T California;
AT&T Wholesale;
AT&T DataComm
 
AT&T Teleholdings, Inc.Delaware
AT&T Midwest;
AT&T West;
AT&T East
 
Southwestern Bell
  Telephone Company, LLC
Delaware
AT&T Arkansas; AT&T Kansas;
AT&T Missouri; AT&T Oklahoma;
AT&T Texas; AT&T Southwest;
AT&T DataComm; AT&T Wholesale
 
The Ohio Bell
  Telephone Company, LLC
Ohio
AT&T Ohio;
AT&T Wholesale
 
Wisconsin Bell, LLCWisconsin
AT&T Wisconsin;
AT&T Wholesale
 
AT&T Services, Inc.Delaware
AT&T Services;
AT&T Labs


AT&T Enterprises, LLC.Delaware
ACC Business
Teleport Communications
  America, LLC
Delawaresame
AT&T DW Holdings, Inc.New Yorksame
BellSouth Telecommunications,
  LLC
Georgia
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
AT&T Southeast
AT&T Mobility LLCDelawaresame
AT&T Mobility II LLCDelawaresame
New Cingular Wireless
  PCS, LLC
Delaware
AT&T Mobility
Cricket Wireless LLCDelawaresame
AT&T Comunicaciones Digitales, S. de R.L. de C.V.Mexico Citysame

 

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