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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. [22] By 1881, Bell Telephone Company had become the American Bell Telephone Company. [23] One of its subsidiaries was the American Telephone and Telegraph Company (AT&T), established in ...
AT&T: $122.4 [3] United States: 4: ... Telecommunications company; ITU-T; Landline; List of mobile network operators. ... List of mobile network operators in the ...
Acquired by Verizon Wireless and AT&T Mobility. [39] AT&T Wireless Services: GSM: EDGE: 22: October 2004: Acquired by Cingular Wireless, which later rebranded to AT&T Mobility. [40] Big Sky Mobile: GSM: EDGE: Unknown: 2017: Sold spectrum licenses to AT&T and T-Mobile and exited the business. [41] Blaze Wireless: GSM, UMTS: EDGE, HSPA+, LTE ...
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.
Claro Puerto Rico, which serves every exchange in Puerto Rico, has been owned by the international telecommunications giant América Móvil since in 2007. [5] Ziply Fiber, which serves ex-GTE areas in the Pacific Northwest that they bought from Frontier. Many other individual communities or smaller regions are also served by non-RBOC companies.
AT&T Mobility, LLC, also known as AT&T Wireless and marketed as simply AT&T, is an American telecommunications company. It is a wholly owned subsidiary of AT&T Inc. and provides wireless services in the United States .
AT&T Communications was renamed AT&T Communications – East, Inc. and sold long-distance telephone service and operated as a CLEC outside of the borders of the Bell Operating Companies that AT&T owned. It has now been absorbed into AT&T Corp. and all but 4 of the original 22 subsidiaries that formed AT&T Communications continue to exist.