AT&T Inc. · Dallas, TX United States ·(NYSE: T)

Through its subsidiaries, affiliates, and operating companies, holding company AT&T is the industry-leading provider of wireline voice communications services in the US. Customers in 22 states use AT&T-branded telephone, Internet, IP-voice, and digital video services; key markets include California, Illinois, and Texas. The company's corporate, government, and public sector clients use its extensive range of conferencing, data networking, managed network, and wholesale communications services. Subsidiary AT&T Mobility is the nation's second largest wireless carrier by both sales and subscriptions (after Verizon Wireless). It provides mobile voice and data services to about 77 million subscribers. To read the full description, subscribe now.