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AT&T is a telecommunications company based in the United States. It is one of the largest telecommunications companies in the world, with operations in over 200 countries. AT&T provides a wide range of services, including wireless and wired internet, television, and telephone services.
The company was originally founded in 1877 as the Bell Telephone Company, and over the years has gone through a series of mergers and acquisitions. In 1984, the company was broken up into seven regional “Baby Bell” companies as a result of an antitrust lawsuit. However, AT&T was eventually reconstituted as a long-distance telecommunications company, and in 2005 acquired the former Baby Bell company SBC Communications.
Today, AT&T provides wireless services through its subsidiary AT&T Mobility, and wired internet and television services through its AT&T TV and AT&T Internet divisions. The company also owns and operates the WarnerMedia entertainment conglomerate, which includes HBO, CNN, and Warner Bros. Pictures.
AT&T has been at the forefront of telecommunications innovation, with a history of developing new technologies such as the transistor, the Unix operating system, and the cellular telephone network. The company continues to invest heavily in research and development in order to remain competitive in a rapidly changing telecommunications landscape.