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  2. Area codes 513 and 283 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_513_and_283

    AT&T assigned area code 513 to the southwestern quadrant, which included Cincinnati and Dayton. Due to the proliferation of cell phones and pagers in the 1990s, the numbering plan area had to be split in 1996 to provide more central office prefixes and telephone numbers. The eastern and northern portions, including Dayton, received area code ...

  3. Pacific Bell - Wikipedia

    en.wikipedia.org/wiki/Pacific_Bell

    On November 18, 2005, SBC completed its acquisition of AT&T Corp. to form AT&T Inc. Pacific Bell is now known as "Pacific Bell Telephone Company", dba AT&T California. In 2006, the company's direct parent, originally Ameritech, became AT&T Teleholdings due to an internal reorganization at AT&T. Its former direct parent, Pacific Telesis Group ...

  4. List of United States telephone companies - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States...

    It was not included in the Bell System breakup of 1984 because the original AT&T held only a minority stake in that company. Verizon, in addition to its role as a RBOC in its areas retained in the East, serves former GTE areas in Pennsylvania and Virginia. Verizon formerly served ex-GTE areas in parts of California, Florida and Texas before ...

  5. 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.

  6. Ohio Bell - Wikipedia

    en.wikipedia.org/wiki/Ohio_Bell

    The Ohio Bell Telephone Company, now doing business as AT&T Ohio, is the Bell Operating Company serving most of Ohio and parts of West Virginia. It is a wholly owned subsidiary of AT&T . Its headquarters is the Ohio Bell Building at 750 Huron Road, Cleveland , Ohio , and formerly had a secondary headquarters at 150 East Gay Street, Columbus ...

  7. AT&T - Wikipedia

    en.wikipedia.org/wiki/AT&T

    AT&T was founded as Bell Telephone Company by Alexander Graham Bell, Thomas Watson and Gardiner Greene Hubbard after Bell's patenting of the telephone in 1875. [21] By 1881, Bell Telephone Company had become the American Bell Telephone Company. [22]