In a merger announced on March 5, 2006, and executed on December 29, 2006, AT&T Inc. (originally SBC Communications) acquired BellSouth for approximately $86 billion (1.325 shares of AT&T for each share of BellSouth). The merger also consolidated ownership of Cingular Wireless and Yellowpages.com, both of which were joint ventures between BellSouth and AT&T. With the merger completed, wireless services previously offered by Cingular Wireless were then offered under the AT&T name, and BellSouth Telecommunications (a subsidiary of Bell Operating Company) began doing business as AT&T Southeast.
The company became known as BellSouth, LLC on June 26, 2015.
BellSouth was the last of the Regional Bell Operating Companies to keep its original corporate name after the 1984 AT&T breakup, as well as the last one to retain the Bell logo as part of its main corporate identity.
BellSouth also operated in Argentina, Australia, Chile, Colombia, Ecuador, Guatemala, New Zealand, Nicaragua, Panama, Peru, Uruguay and Venezuela. BellSouth operated in New Zealand under the name of BellSouth New Zealand Limited from 1993 until 1998 when it was acquired by Vodafone to become Vodafone New Zealand. It competed against Telecom New Zealand. Its operations in Australia were under the name of BellSouth Australia Pty Limited. All of Bellsouth's operations in Latin America were acquired by Telefonica in late 2004 for nearly $5.85 billion.