AT&T Inc. (NYSE: T) is the 2n largest provider of both local and long distance telephone services, wireless service, and DSL Internet access in the United States with 71.4 million customers. In 2005, "Baby Bell" SBC Communications Inc. purchased former "Ma Bell" AT&T Corporation and then changed the name of the company after the merger to the more iconic AT&T moniker and the T stock-trading symbol (for "telephone").