AT&T 

AT&T, Inc. is a holding company, which engages in the provision of telecommunications media and technology services. It operates through the Communications and Latin America segments. The Communications segment offers services to businesses and consumers located in the U.S., or in U.S. territories, and businesses globally. The Latin America segment focuses on the entertainment and wireless services outside of the U.S. The company was founded in 1983 and is headquartered in Dallas, TX.