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 segments: Communications, WarnerMedia, Latin America and Xandr. 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 WarnerMedia 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. The listed name for T is AT&T Inc.