The seven holding companies into which the 22 Bell System local telephone companies were assigned at divestiture: Pacific Telesis, U.S. West, Southwestern Bell Corp., Ameritech, BellSouth, Bell Atlantic, NYNEX.
Local or regional telco in one of seven regions of the U.S.A. formed by the divestiture of AT&T. Also known as Bell Operating Company (BOC) or, colloquially, as Baby Bells.
The acronym for the local telephone companies created by the Modified Final Judgment in 1984 as part of the break-up of AT&T. The original seven RBOCs were Ameritech, Bell Atlantic, Bell South, Nynex, Pacific Telesis Group, Southwestern Bell, and US West.