AT&T Inc. is an American multinational telecommunications corporation headquartered in Whitacre Tower, Dallas, Texas, United States. It is the second largest provider of mobile telephony and fixed telephony in the United States, and is also a provider of broadband and subscription television services. As of 2010, AT&T is the 7th largest company in the United States by total revenue, as well as the 4th largest non-oil company in the US . It is the 3rd largest company in Texas by total revenue and the largest non-oil company in Texas. It is also the largest company headquartered in... Dallas. In 2011, Forbes listed AT&T as the 14th largest company in the world by market value and the 9th largest non-oil company in the world by market value. It is the 20th largest mobile telecom operator in the world with over 100.7 million mobile customers. The company began its existence as Southwestern Bell Corporation, one of seven Regional Bell Operating Companies created in 1983 as part of the break-up of the original AT&T due to the United States v.
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| NYSE symbol: | T |
| Founded: | 1983 |
| Headquarters: | Dallas, Texas |
| Annual revenue: | $124,028,000,000 |
| Net income: | $12,867,000,000 |
| Operating income: | $11,951,000,000 |
| Market cap: | $260,000,000,000 |
| Employees: | 309,050 |
| Industries: | Telecommunications, Provider (Operator), Fixed Network Operator, Telephone Communications, Except Radiotelephone, Wired Telecommunications Carriers |