AT&T Inc. (stylized as at&t) is an American multinational telecommunications corporation, headquartered at Whitacre Tower in downtown Dallas, Texas. AT&T is the largest provider both of mobile telephony and of fixed telephony in the United States, and also provides broadband subscription television services. AT&T is the third-largest company in Texas (the largest non-oil company, behind only ExxonMobil and ConocoPhillips, and also the largest Dallas company). As of May 2013, AT&T is the 21st largest company in the world by market value, and the 13th largest non-oil company. As of 2013[update], it is also the 21st largest mobile telecom operator in the world, with over 107.9 million mobile customers.
The current iteration of AT&T Inc. began its existence as Southwestern Bell Corporation, one of seven Regional Bell Operating Companies created in 1983 in the divestiture of parent company American Telephone and Telegraph Company (founded 1885, later AT&T Corp.) due to the United States v. AT&T antitrust lawsuit. Southwestern Bell changed its name to SBC Communications Inc. in 1995. In 2005, SBC purchased former parent AT&T Corp. and took on its branding, with the merged entity naming itself AT&T Inc. and using the iconic AT&T Corp. logo and stock-trading symbol.
The current AT&T reconstitutes much of the former Bell System and includes ten of the original 22 Bell Operating Companies, along with one it partially owned (Southern New England Telephone), and the original long distance division.
Mr. Randall L. Stephenson has been the Chief Executive Officer of AT&T, Inc. (Formerly, SBC Communications, Inc.) since May 9, 2007 and as its President since June 2007. Mr. Stephenson has background in Telecommunications. He served as the Chief Financial Officer of SBC Communications Inc., Pension Arm. He served as the Chief Operating Officer of AT&T from April 30, 2004 to May 9, 2007, Chief Financial Officer and Senior Executive Vice President from August 2001 to May ... 2004 and also served as its Principal Accounting Officer. He served as Senior Executive Vice President and Chief Financial Officer of SBC Communications Inc. (SBC), the Manager of AT&T Mobility LLC from August 2001 to April 2004. He joined Southwestern Bell Telephone Company in 1982 in the Information Technology Organization in Oklahoma City. Since 1986, he served as an Area Manager of Corporate Taxes. He served as District Manager of Financial Analysis since 1991. He served as Director of Finance at SBC International, Inc. in Mexico City and was responsible for Financial Oversight of SBC's Mexico properties, including Teléfonos de México (Telmex). From 1996 to October 1999, he served as Controller for SBC Communications Inc. in San Antonio, and served as Vice President and Controller for SBC the following year. He also served as Senior Vice President of Finance with responsibility for all Financial Matters from October 1999 to September 2000 of SBC's Telephone Company Operations, which included Ameritech, Pacific Bell, Nevada Bell and Southwestern Bell. Additionally, he served as a Senior Vice President of Consumer Marketing, where he was responsible for all Product Development, Marketing, Pricing and Tariffs, and Sales Support for SBCs Residential Customers and as Senior Vice President of Performance Assurance until October 2000, where he was responsible for monitoring and assuring the performance of the realigned SBC. He started his career at Southwestern Bell Telephone Company in 1982 and has extensive experience in Finance and Operations. Mr. Stephenson has been the Chairman of AT&T, Inc. since June 3, 2007. He served as the Chairman of Cingular Wireless Corporation, a Manager of AT&T Mobility LLC from February 2003 to June 2004. He has been a Director of AT&T, Inc. since June 1, 2005, Emerson Electric Co. since June 1, 2006. He serves as Director of AT&T Mobility LLC. He served as a Director of Cingular Wireless Corporation from July 2001 to 2006 and Prodigy Communications Corp. since 2001. He serves on the San Antonio United Way Executive Committee. He did his Certified Public Accountant. Mr. Stephenson holds a Bachelor of Science degree in Accounting from Central State University in Edmond, Okla., and a Master of Accountancy degree from the University of Oklahoma at Norman.