At and T United States of America Contact Customer Service Numbers Home» At» At and T United States of America General: 1 8003310500Alternative: +1 8662464852 AT and T Corporate, 208 South Akard Street, Dallas, Texas, United StatesDirections: Follow the directions to locate At and T United States of America ContactLocations Near You: Find nearby locations of At and T United States of America ContactResidence restore Center : 1-877-737-2478TTY users : 1-888-611-2344Customer care convenience number : 866-805-3921At and T United States of America Customer Care Executive Phone Number : 888-387-6270 / (888) 764-2548At and T United States of America Toll Free Number : 1-800-331-0500Basic OverviewAT and T is the American telecommunication company with fixed line, internet and mobile phone services. Founded in 1983 as Southwestern Bell Corporation the company has headquarters at Dallas, Texas, United States. Its extensive product line includes satellite Television, home security, digital TV, IPTV, network security and so on. The enterprise manages various divisions like AT&T communications and AT&T international. The corporation runs ample number of subsidiaries for smooth business operations some of them includes AT&T Mexico, AT&T Mobility and so on.American tel and Telegraph Wireless assistance Incorporation broadly admitted as At and T Wireless assistance,Incorporation is a pervasive telecommunication corporation set-up in US. this was inaugurated by Alexander Graham Bell on October 5, 1893 under title of “McCaw Cellular telecommunications, Incorporation”. corporation suffered outstanding procurements before this was replaced as “American tel and Telegraph Wireless assistance Incorporation. this renders fixed line net assistance, fixed telephony, broadband net, Mobile telephony, digital TV assistance.