Our world is rapidly being transformed by the widespread and growing availability of 5G and fiber. And AT&T is leading the charge with our nationwide fast, reliable and secure 5G coupled with our growing, multi-gig fiber internet footprint. As much as we depend on broadband connectivity today, we think this is only the beginning.
AT&T Corporation, originally the American Telephone and Telegraph Company, is the subsidiary of AT&T Inc. that provides voice, video, data, and Internet telecommunications and professional services to businesses, consumers, and government agencies.
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AT&T - Wikipedia AT&T For other uses, see AT&T (disambiguation). AT&T Inc. is an American multinational telecommunications holding company that is Delaware-registered  but headquartered at Whitacre Tower in Downtown Dallas, Texas. 
On Jan. 31, 2005, SBC Communications Inc. ("SBC") announced its historic agreement to acquire AT&T Corp. After the closing of the acquisition, AT&T Corp. became a wholly owned subsidiary of SBC. In recognition of the global importance of the AT&T name, SBC changed its corporate name to AT&T Inc. The acquisition was completed on Nov. 18, 2005.
More than 3.5 million businesses from the largest multinational corporations to small businesses turn to AT&T. We work in all major industries, including financial services, manufacturing, education, healthcare, retail, hospitality and government. AT&T around the world AT&T Solutions AT&T white papers & reports
1 "Standalone AT&T” results represent AT&T’s continuing operations and exclude U.S. Video operations and other dispositions. See Form 8-K dated July 21, 2022 | 2 Represents total Capital Investment, on a consolidated basis, including acquisitions of spectrum and wireless operations from 2017 to 2021 | 3 Includes dividends and buybacks from 2017-2021 | 4 Based on nationwide GWS drive test data.
AT&T Corporation, formerly (1899–1994) American Telephone and Telegraph Company, American corporation that provides long-distance telephone and other telecommunications services.