AT&T Inc., founded in 1983, is the largest wireless communication service provider in the United States. The company provides services and products to consumers in the United States and to telecom service providers worldwide. The services and products offered by AT&T vary by market, including wireless communication, local exchange services, long-distance services, data/broadband and internet services, video services, communication equipment, network management, wholesale services, and classified advertising and publishing. AT&T's traditional wired local exchange services operate in 22 states in the United States. As of December 31, 2007, AT&T served approximately 70.1 million customers, making it one of the major mobile wireless voice and data communication service providers in the United States. AT&T's business is divided into four parts: wireless, wired, advertising and publishing, and other.