About Business
AT&T is an American Telephone and Telegraph company. It?s a multinational telecommunications company located at the Whitacre Tower in Downtown Dallas, Texas. By revenue, it?s the world?s third-largest telecommunications firm and third-largest wireless carrier in the U.S. The company ranked 13th on the Fortune 500 rankings of the U.S.?? AT&T began its journey as a District Telegraph Company established in 1878 in St. Louis. It expanded its services to various states, including Kansas, Oklahoma, Arkansas, and Texas, through many mergers. It soon became the Southwestern Bell Telephone Company in 1920.