815 Carriers

Xo Illinois, Inc. Verizon South Inc. - Il
Verizon North Inc. - Il Us Xchange Of Illinois, L.L.C.
United States Cellular Corp. - United States Cellular Corp.
Tonica Tel Co Teleport Communications Chicag
Tds Metrocom, Inc. - Wi Tds Metrocom, Inc. - Il
T-Mobile Usa, Inc. Stelle Tel Co
Sprint Spectrum L.P.- Il Sprint Spectrum L.P.
Sprint Communications Company, Southwestern Bell Mobile Syste
Sharon Tel Co - Wi Sbc Internet Services, Inc.
Rcn Telecom Services Of Illino Paetec Communications, Inc. -
Pac-West Telecomm, Inc. - Il Ovation Communications Of Illi
North County Communication Cor Nextel Partners Operating Corp
Nextel Communications, Inc. Metrocall
Mcnabb Tel Co Mcleodusa Telecommunication Se
Mci Worldcom Communications, I Marseilles Tel Co Of Marseille
Level 3 Communications, Llc - Leonore Mutual Tel Co
Leaf River Telephone Co Kinsman Mutual Tel Co
Insight Phone Of Illinois, Llc Illinois Valley Cellular Rsa 2
Illinois Bell Tel Co - Il Illinois Bell Tel Co
Heartland Communications, Inc. Globalcom, Inc.-Il
Gallatin River Communications Frontier Communications-Prairi
Frontier Communications Of Ill Frontier Communications Of Dep
Essex Telcom, Inc. Digital Network Access Communi
Contel Cellular, Inc. Comcast Phone Of Illinois, Llc
Citizens Tel. Co. Of Il Dba Fr Charter Fiberlink - Illinois,
Cellco Partnership Dba Verizon C-R Tel Co
Broadwing Communications, Llc Blue Licenses Holding, Llc
Bitwise Communications, Inc. - Bergen Tel Co - Wi
Beepermart, Inc. At&T - Local - Il
Arch Wireless Holdings, Inc. Answer America Dba Answer Usa
American Messaging (Am), Inc. Aero Communications, Inc. - Il
Adbeep, Llc A Beep Llc

815 Exchanges