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  2. AT&T - Wikipedia

    en.wikipedia.org/wiki/AT&T

    AT&T Inc. (with "AT&T" being an abbreviation for its former name, the American Telephone and Telegraph Company) is an American multinational telecommunications holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. [5] It is the world's fourth-largest telecommunications company by revenue and the largest wireless carrier in ...

  3. AT&T Internet - Wikipedia

    en.wikipedia.org/wiki/AT&T_Internet

    Website. www .att .com /internet /. AT&T Internet is an AT&T brand of broadband internet service. Previously, AT&T Internet was branded as U-verse Internet and bundled with U-verse TV, which was spun off into the newly independent DirecTV in 2021. AT&T Internet plans powered by fiber-optic cable use the AT&T Fiber brand.

  4. Alltel - Wikipedia

    en.wikipedia.org/wiki/Alltel

    Alltel was a landline, wireless and general telecommunications services provider, primarily based in the United States. Before its wireless division was acquired by Verizon Wireless and AT&T, Alltel provided cellular service to 34 states and had approximately 13 million subscribers. As a regulatory condition of the acquisition by Verizon, a ...

  5. Breakup of the Bell System - Wikipedia

    en.wikipedia.org/wiki/Breakup_of_the_Bell_System

    US West. The breakup of the Bell System was mandated on January 8, 1982, by a consent decree providing that AT&T Corporation would, as had been initially proposed by AT&T, relinquish control of the Bell Operating Companies, which had provided local telephone service in the United States. [1] This effectively took the monopoly that was the Bell ...

  6. Ameritech - Wikipedia

    en.wikipedia.org/wiki/Ameritech

    Ameritech. AT&T Teleholdings, Inc., formerly known as Ameritech Corporation (and before that American Information Technologies Corporation ), is an American telecommunications company that arose out of the 1984 AT&T divestiture. Ameritech was one of the seven Regional Bell Operating Companies that was created following the breakup of the Bell ...

  7. AT&T Communications - Wikipedia

    en.wikipedia.org/wiki/AT&T_Communications

    AT&T Phone. AT&T Phone (formerly AT&T U-verse Voice) is a voice communication service delivered over AT&T's IP network . This phone service is digital and provides a voicemail service accessed by *98 from the home number. Customers who subscribe to both AT&T Phone and U-verse TV get features such as call history on channel 9900, which displays ...

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