Fixed line operators
AT&T
Verizon Communications (includes formerly independent GTE operating companies)
Fairpoint Communications
Qwest Corporation
BellSouth
Blue Casa Communications
SBC
CenturyTel
Cincinnati Bell (AT&T formerly held minority interest)
Embarq
Frontier
GTE
Malheur Bell (Independent subsidiary of Qwest Corporation/Mountain Bell)
Puerto Rico Telephone (TELPRI, former holding of Verizon, now 100% holding of América Móvil of Mexico)
Telephone and Data Systems
Windstream Communications
ACN Inc.
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