is the
Bell Operating Company serving
Indiana . It is a wholly owned subsidiary of AT&T Inc.
After the 1984
Bell System Divestiture , Indiana Bell became a part of
Ameritech , one of the 7 original
Regional Bell Operating Companie s. The Indiana Bell name continued to be used until January
1993 , when they dropped all of their individual Bell Operating Company names in favor of using their corporate name, Ameritech, for marketing purposes, resulting in . In
2002 , 3 years after Ameritech was acquired by
SBC Communications , SBC rebranded all of its companies "SBC" for use as a national brand. Indiana Bell then was renamed '''Indiana Bell Telephone Company, Inc.
D/b/a SBC Indiana'''. After
AT&T Corp. was acquired by
SBC Communications , SBC renamed itself AT&T, resulting in Indiana Bell being renamed '''Indiana Bell Telephone Company, Inc.
D/b/a AT&T Indiana'''.
After being held by AT&T (pre-1984), Ameritech, and SBC, as of
2005 , they are now part of the "new"
AT&T .
