AT&T is one of the largest US telecommunications companies, providing wireless (including Cricket prepaid), fiber and fixed broadband, and business connectivity services to more than 100 million US subscribers, plus wireless in Mexico. Incorporated in Delaware in 1983 and headquartered in Dallas, Texas, it is listed on the NYSE (T), had about 133,000 employees at the end of 2025, and is led by chairman and CEO John Stankey.