AT&T Corporation
Final logo, used from 2015 to 2024 | |
AT&T Corporation's former headquarters at 550 Madison Avenue in New York City | |
| Formerly | American Telephone and Telegraph Company (1885–1994) |
|---|---|
| Company type | Public |
| NYSE: T | |
| Industry | Telecommunications |
| Predecessor | American Bell |
| Founded | March 3, 1885 New York City, United States |
| Founder | Theodore Newton Vail |
| Defunct | May 1, 2024 |
| Fate | Dissolution |
| Successor | AT&T Inc. |
| Headquarters | , United States |
Area served | United States |
| Products | |
| Parent | American Bell (1885–1899) AT&T (2005–2024) |
| Subsidiaries | AT&T Communications |
AT&T Corporation, an abbreviation for its former name, the American Telephone and Telegraph Company, was an American telecommunications company that provided voice, video, data, and Internet telecommunications and professional services to businesses, consumers, and government agencies.
During the Bell System's long history, AT&T was at times the world's largest telecommunications company, the world's largest cable television operator, and a regulated monopoly. At its peak in the 1950s and 1960s, it employed one million people and its revenue ranged between US$3 billion in 1950 ($42.6 billion in present-day terms) and $12 billion in 1966 ($120 billion in present-day terms).
In 2005, AT&T was acquired by "Baby Bell" and former subsidiary SBC Communications for more than $16 billion ($25.8 billion in present-day terms). SBC then changed its name to AT&T Inc., with AT&T Corporation continuing to exist as a long-distance calling subsidiary until its dissolution on May 1, 2024.