AT&T (disambiguation)
AT&T refers to several related companies providing telecommunications services:
- History of AT&T, a history of the various companies using this name, including:
- AT&T Corporation, the original AT&T founded 1885 (formerly American Telephone & Telegraph), now a subsidiary of AT&T, Inc.
- AT&T Communications Inc., provided long-distance services for AT&T Corporation (defunct)
- AT&T, Inc., the current company providing a wide range of telecommunications service, originally one of the Baby Bells which acquired other systems, and formerly known as Southwestern Bell Corporation (SBC)
- AT&T Communications, houses most of AT&T Inc.'s Telecommunications and Technology Businesses
- Bell System, known as Ma Bell, AT&T Corporation's system of companies that held a monopoly on phone service in the US for most of the 20th century
- Regional Bell Operating Company, known as Baby Bells, the companies formed from AT&T Corporations's 1984 split
- AT&T Corporation, the original AT&T founded 1885 (formerly American Telephone & Telegraph), now a subsidiary of AT&T, Inc.
AT&T may also refer to:
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