AT&T Inc., also called AT&T, is a holding company, which engages in the provision of telecommunications media and technology service. It operates through the following four segments: Communications, Warner Media, Latin America and Xandar. Read More The Communications segment provides services to businesses and consumers located in the U.S., or in U.S. territories, and businesses globally. The Warner Media segment develops, produces and distributes feature films, television, gaming and other content over various physical and digital formats. The Latin America segment provides entertainment and wireless services outside of the U.S. The Xandar segment provides advertising services. The company was founded in 1983 and is headquartered in Dallas, TX.