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  2. Southwestern Bell - Wikipedia

    en.wikipedia.org/wiki/Southwestern_Bell

    Southwestern Bell Telephone Company. Southwestern Bell Telephone Company is a wholly owned subsidiary of AT&T. It does business as other d.b.a. names in its operating region, which includes Arkansas, Kansas, Missouri, Oklahoma, Texas, and portions of Illinois. The company is currently headquartered in Dallas, Texas at One AT&T Plaza .

  3. History of AT&T - Wikipedia

    en.wikipedia.org/wiki/History_of_AT&T

    One of the new companies formed by the breakup of AT&T was Southwestern Bell Corporation. This company grew continuously over the years until it acquired AT&T in 2005. After this acquisition, SBC took on AT&T's name and branding, and this is the company known as AT&T today. 1984–2001: Southwestern Bell Corporation

  4. Breakup of the Bell System - Wikipedia

    en.wikipedia.org/wiki/Breakup_of_the_Bell_System

    The breakup of the Bell System resulted in the creation of seven independent companies that were formed from the original twenty-two AT&T-controlled members of the System. [5] On January 1, 1984, these companies were NYNEX, Pacific Telesis, Ameritech, Bell Atlantic, Southwestern Bell Corporation, BellSouth, and US West. NYNEX, merged with Bell ...

  5. Pacific Bell - Wikipedia

    en.wikipedia.org/wiki/Pacific_Bell

    Pacific Bell Telephone Company. The Pacific Bell Telephone Company ( Pac Bell) is a telephone company that provides telephone service in California. The company is owned by AT&T through AT&T Teleholdings, and, though separate, is now marketed as “AT&T”. The company has been known by a number of names during which its service area has changed.

  6. AT&T Corporation - Wikipedia

    en.wikipedia.org/wiki/AT&T_Corporation

    SBC announced in October 2005 that it would shed the "SBC" brand and take the more recognizable AT&T brand, along with the old AT&T's "T" NYSE ticker symbol. Merger approval concluded on November 18, 2005; SBC Communications began rebranding the following Monday, November 21 as " the new AT&T " and began trading under the "T" symbol on December 1.

  7. Ameritech - Wikipedia

    en.wikipedia.org/wiki/Ameritech

    Ameritech was acquired in 1999 by SBC Communications, which subsequently acquired AT&T Corporation in 2006, becoming the present-day AT&T. Overview [ edit ] Ameritech was created as a holding company that owned five former Bell System companies in the Midwest.

  8. Pacific Telesis - Wikipedia

    en.wikipedia.org/wiki/Pacific_Telesis

    Pacific Telesis was the holding company for Pacific Bell, Nevada Bell, Pacific Telesis International, PacTel Mobile Services and PacTel InfoSystems. Pacific Telesis was headquartered in San Francisco and incorporated in Nevada. It was acquired by SBC Communications (the former Southwestern Bell) in 1997, which would eventually become today’s ...

  9. 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. [4] It is the world's fourth-largest telecommunications company by revenue and the largest wireless carrier in ...