AT&T Inc. is an American multinational conglomerate holding company headquartered at Whitacre Tower in Downtown Dallas, Texas.
AT&TAT&T Inc.SBCAmerican Telephone and Telegraph CompanySouthwestern BellSBC CommunicationsAT&T, Inc.1-800-CALL-ATTSBC/AT&TAT&T Mobility

AT&T Corporation

AT&TAT&T CorporationAmerican Telephone & Telegraph Company
The Bell Telephone Company evolved into American Telephone and Telegraph Company in 1885, which later rebranded as AT&T Corporation.
AT&T Corp., originally the American Telephone and Telegraph Company, is the subsidiary of AT&T that provides voice, video, data, and Internet telecommunications and professional services to businesses, consumers, and government agencies.

WarnerMedia

Time WarnerAOL Time WarnerWarner Communications
Since June 14, 2018, it is also the parent company of mass media conglomerate WarnerMedia, making it the world's largest media and entertainment company in terms of revenue.
Warner Media, LLC (formerly Time Warner Inc.), doing business as WarnerMedia, is an American multinational mass media and entertainment conglomerate owned by AT&T and headquartered in New York City.

Telephone

telephonephonetelephones
It is the world's largest telecommunications company, the second largest provider of mobile telephone services, and the largest provider of fixed telephone services in the United States through AT&T Communications.
Until approximately the 1970s, most telephones used a rotary dial, which was superseded by the modern dual-tone multi-frequency (DTMF) push-button dial, first introduced to the public by AT&T in 1963.

DirecTV

DirecTVDIRECTV SportsDirectTV
In July 2015, AT&T purchased DirecTV for $48.5 billion, or $67.1 billion including assumed debt, subject to certain conditions. On July 13, 2017, it was reported that AT&T would introduce a cloud-based DVR streaming service as part of its effort to create a unified platform across DirecTV and its DirecTV Now streaming service, with U-verse to be added soon. In order for AT&T to fully acquire Time Warner, the Department of Justice stated that the company must divest either DirecTV or Turner Broadcasting System.
DirecTV (stylized as DIRECTV) is an American direct broadcast satellite service provider based in El Segundo, California and is a subsidiary of AT&T.

Southwestern Bell

Southwestern BellSouthwestern Bell Telephone CompanySouthwestern Bell Telephone
AT&T began its history as Southwestern Bell Telephone Company, a subsidiary of the Bell Telephone Company, founded by Alexander Graham Bell in 1880.
Southwestern Bell Telephone Company is a wholly owned subsidiary of AT&T.

AT&T U-verse

U-verseAT&T U-VerseAT&T
On July 13, 2017, it was reported that AT&T would introduce a cloud-based DVR streaming service as part of its effort to create a unified platform across DirecTV and its DirecTV Now streaming service, with U-verse to be added soon.
AT&T U-verse, commonly called U-verse, was an AT&T brand of triple-play telecommunications services, although the brand is now only used in reference to the IPTV service.

Turner Broadcasting System

Turner BroadcastingTBSTurner
In order for AT&T to fully acquire Time Warner, the Department of Justice stated that the company must divest either DirecTV or Turner Broadcasting System.
Turner Broadcasting System, Inc. is an American media conglomerate that is a division of AT&T's WarnerMedia, and manages the collection of cable television networks and properties initiated or acquired by Ted Turner.

AT&T Mexico

AT&TIusacellIUSA
AT&T purchased the Mexican carrier Iusacell in late 2014, and two months later purchased the Mexican wireless business of NII Holdings, merging the two companies to create AT&T Mexico.
AT&T Mexico (formerly known as lusacell and Nextel Mexico) also known as AT&T Wireless Mexico is a Mexican mobile telephone operator and subsidiary of AT&T, which is headquartered in Mexico City.

DirecTV Now

On July 13, 2017, it was reported that AT&T would introduce a cloud-based DVR streaming service as part of its effort to create a unified platform across DirecTV and its DirecTV Now streaming service, with U-verse to be added soon.
DirecTV Now (stylized as DIRECTV NOW, also known simply as DTV Now ) is a subscription streaming television service owned by AT&T, which allows subscribers in the United States to stream programming from cable channels without the long term commitment.

Regional Bell Operating Company

Regional Bell Operating CompaniesBaby BellsBaby Bell
The 1982 United States v. AT&T antitrust lawsuit resulted in the divestiture of AT&T Corporation's ("Ma Bell") subsidiaries or Regional Bell Operating Companies ("Baby Bells"), resulting in several independent companies including Southwestern Bell Corporation; the latter changed its name to SBC Communications Inc. in 1995.
Currently, three companies have the RBOCs as predecessors: AT&T Inc., Verizon, and CenturyLink.

BellSouth

BellSouthBellSouth CorporationBell South
In 2006, AT&T Inc. acquired BellSouth, the last independent Baby Bell company, making their formerly joint venture Cingular Wireless (which had acquired AT&T Wireless in 2004) wholly owned and rebranding it as AT&T Mobility. Ameritech sold some of its Wisconsin lines to CenturyTel in 1998; BellSouth sold some of its lines to MebTel in the 2000s; U S WEST sold many historically Bell landlines to Lynch Communications and Pacific Telecom in the 1990s; Verizon sold many of its New England lines to FairPoint in 2008 and its West Virginia operations to Frontier Communications in 2010.
In a merger announced on March 5, 2006, and executed on December 29, 2006, AT&T Inc. (originally SBC Communications) acquired BellSouth for approximately $86 billion (1.325 shares of AT&T for each share of BellSouth).

History of AT&T

SBCSBC CommunicationsSouthwestern Bell Corporation
AT&T Corporation was eventually purchased by one of its Baby Bells, the former Southwestern Bell, in 2005 and the combined company became known as AT&T Inc.

CenturyLink

CenturyLinkCenturyLink PrismCenturyTel
Ameritech sold some of its Wisconsin lines to CenturyTel in 1998; BellSouth sold some of its lines to MebTel in the 2000s; U S WEST sold many historically Bell landlines to Lynch Communications and Pacific Telecom in the 1990s; Verizon sold many of its New England lines to FairPoint in 2008 and its West Virginia operations to Frontier Communications in 2010.
A member of the S&P 500 index, the company operates as a local exchange carrier and Internet access provider in U.S. markets and is the third-largest telecommunications company in the United States in terms of lines served, behind AT&T and Verizon.

HBO

HBOHome Box OfficeHBO PPV
Home Box Office (HBO) is an American premium cable and satellite television network that is owned by the namesake unit Home Box Office, Inc., a division of AT&T's WarnerMedia.

Warner Bros.

Warner Bros. PicturesWarner BrothersWarner Bros. Entertainment
Warner Bros. Entertainment Inc. (formerly Warner Bros. Pictures, Inc.), commonly referred to as Warner Bros. and abbreviated WB, is an American entertainment company headquartered in Burbank, California and a subsidiary of AT&T's WarnerMedia.

Game Show Network

GSNGame Show NetworkGSN HD
Game Show Network (GSN) is an American pay television channel that is a joint venture between Sony Pictures Television (owning a 58% interest) and AT&T (holding 42%).

Cloud computing

cloud computingcloudcloud-based
On July 13, 2017, it was reported that AT&T would introduce a cloud-based DVR streaming service as part of its effort to create a unified platform across DirecTV and its DirecTV Now streaming service, with U-verse to be added soon.
The term cloud was used to refer to platforms for distributed computing as early as 1993, when Apple spin-off General Magic and AT&T used it in describing their (paired) Telescript and PersonaLink technologies.

Pacific Bell

Pacific Telephone & TelegraphPacific BellPacific Telephone and Telegraph Company
The company is owned by AT&T Inc. through AT&T Teleholdings.

MLB Network

MLB NetworkMLBNnetwork counterpart
It is primarily owned by Major League Baseball, with television providers AT&T, Comcast's NBC Sports Group, Charter Communications and Cox Communications having minority ownership.

Comcast

ComcastComcast XfinityComcast Corporation
It is the second-largest broadcasting and cable television company in the world by revenue and the second-largest pay-TV company (after AT&T), the largest cable TV company and largest home Internet service provider in the United States, and the nation's third-largest home telephone service provider.

Michigan Bell

Michigan Bell Telephone CompanyAT&T MichiganMichigan Bell Telephone
Michigan Bell is the subsidiary of AT&T serving the state of Michigan.

Cricket Wireless

CricketCricket CommunicationsCricket Wireless (GSM)
Cricket Wireless LLC is a prepaid wireless service provider in the United States, a wholly owned subsidiary of AT&T Inc. It offers mobile voice, text, and data using parent AT&T's nationwide network.

Charter Communications

CharterCharter SpectrumSpectrum
Providing services to over 26 million customers in 41 states, it is the second-largest cable operator in the United States by subscribers, just behind Comcast, and third largest pay TV operator behind Comcast and AT&T U-verse/DirecTV.

Central European Media Enterprises

CMECEMECETV
Central European Media Enterprises Ltd. (CME) is a Bermudan media and entertainment company operating in Central and Eastern Europe and owned by AT&T.

YP Holdings

AT&T Real Yellow PagesYP Holdings LLC
St. Louis continues as home to the company's Directory operations, AT&T Advertising Solutions.
The company was formed on April 4, 2012 preceding a formal announcement that AT&T would sell off a 53% stake in its directory operations to Cerberus Capital Management.