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Ameritech
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<p>AT&T Teleholdings, Inc., formerly known as Ameritech Corporation (and, before that, American Information Technologies Corporation), was an American <a href="/facts/Telecommunications/vxoj1cxR">telecommunications</a> company that arose out of the 1984 <a href="/facts/AT%26T_divestiture/W2WFN3nb">AT&T divestiture</a>. Ameritech was one of the seven <a href="/facts/Regional_Bell_Operating_Company/9azPk76z">Regional Bell Operating Companies</a> created following the breakup of the <a href="/facts/Bell_System/GspEoeEF">Bell System</a>. Ameritech was acquired in 1999 by SBC Communications, which subsequently acquired <a href="/facts/American_Telephone_%26_Telegraph/BfsX7eX2">AT&T Corporation</a> in 2006, becoming the present-day <a href="/facts/AT%26T/y3Lo9uhk">AT&T</a>. </p>