# Regional Bell Operating Companies The seven local telephone companies created by the 1984 [[wiki/Modified Final Judgment|Modified Final Judgment]] that broke up the [[wiki/AT&T|AT&T]] Bell System: [[wiki/Ameritech|Ameritech]], Bell Atlantic, [[wiki/BellSouth|BellSouth]], [[wiki/NYNEX|NYNEX]], [[wiki/Pacific Telesis|Pacific Telesis]], [[wiki/SBC Communications|Southwestern Bell (SBC)]], and [[wiki/US West|US West]]. Also known as the [[wiki/Baby Bells|Baby Bells]], these seven entities reconsolidated over three decades into essentially three companies: AT&T, [[wiki/Verizon|Verizon]], and [[wiki/Lumen Technologies|Lumen Technologies]]. The reconsolidation is mapped in [[articles/Bell Labs and the Distributed Architecture of American Power|Bell Labs and the Distributed Architecture of American Power]].