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Ameritech
AT&T Teleholdings, Inc.
, formerly known as
Ameritech Corporation
(and before that
American Information Technologies Corporation
), was a
U.S.
telecommunications
company that arose out of the 1984
AT&T divestiture
. Ameritech was one of the seven
Regional Bell Operating Companies
that was created following the breakup of the
Bell System
. Ameritech was acquired by
SBC Communications
in 1999 which subsequently acquired
AT&T Corporation
in 2006, becoming the present-day
AT&T Inc
.
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