Template:AT&T chart

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AT&T Corporation
RBOC grouped into "Baby Bells" split off in 1984
BellSouthAT&T Corporation
(non-LEC)
AmeritechPacific TelesisSouthwestern Bell
(later SBC Communications)
Bell AtlanticNYNEXUS West
GTE
(non-RBOC ILEC)
Qwest (non-RBOC ILEC)
Verizon
AT&T
(former SBC)
CenturyLink
(non-RBOC ILEC)
AT&TVerizonLumen Technologies