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  2. SBC Long Distance - Wikipedia

    en.wikipedia.org/wiki/SBC_Long_Distance

    SBC Long Distance is a separate subsidiary than AT&T Communications, the incumbent long-distance carrier for most of the country acquired in the SBC merger with AT&T. SBC Long Distance started in 1996 as Southwestern Bell Communications Services, Inc. , created as a result of the Telecommunications Act of 1996 which allowed the Baby Bells to ...

  3. AT&T Communications - Wikipedia

    en.wikipedia.org/wiki/AT&T_Communications

    AT&T Communications is a division of AT&T that focuses on mobile phone, broadband, fixed line telephone, home security, network security, and business services. The division houses AT&T Mobility , AT&T Internet , AT&T Phone, AT&T Long Distance, AT&T Labs , AT&T Digital Life , and AT&T Cybersecurity .

  4. AT&T Communications (1984–2010) - Wikipedia

    en.wikipedia.org/wiki/AT&T_Communications_Inc.

    In 2010, AT&T Communications (and subsidiary AT&T Communications of New England) was merged into AT&T Corp. [5] In 2012, 17 more of the AT&T Communications companies were dissolved into AT&T Corp., leaving only the companies in Indiana, New York, Virginia, and Washington, D.C. as the last remnants of the 1984-created structure. On July 28, 2017 ...

  5. AT&T - Wikipedia

    en.wikipedia.org/wiki/AT&T

    After this purchase, SBC adopted the better-known AT&T name and brand, with the original AT&T Corporation still existing as the long-distance landline subsidiary of the merged company. [38] The current AT&T Inc. claims the original AT&T Corporation's history (dating to 1877) as its own, [ 39 ] but retains SBC's pre-2005 corporate structure and ...

  6. List of mobile virtual network operators in the United States

    en.wikipedia.org/wiki/List_of_mobile_virtual...

    Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.

  7. Telephone numbering plan - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbering_plan

    This concept was first developed in the planning for a nationwide numbering plan for Operator Toll Dialing and direct distance dialing (DDD) in the Bell System in the United States in the 1940s, a system that resulted in the North American Numbering Plan for World Zone 1. [4] AT&T divided the United States and Canada into numbering plan areas ...

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