773 Carriers

Xo Illinois, Inc. United States Cellular Corp.
United States Cellular Corp Il Teleport Communications Chicag
Tds Metrocom, Inc. - Il T-Mobile Usa, Inc.
T Mobile Usa Sprint Spectrum L.P.
Sprint Spectrum L P Sprint Communications Company,
Southwestern Bell Mobile Syste Sigecom
Rcn Telecom Services Of Illino Peerless Network Of Illinois
Paetec Communications, Inc. - Pac-West Telecomm, Inc. - Il
Ovation Communications Of Illi Nextel Communications, Inc.
Multi Computer Systems, Inc. Mpower Communications Corp - I
Metrocall Mci Worldcom Communications, I
Mci Metro Ats, Inc. - Il Map Mobile Communications
Level 3 Communications, Llc - Illinois Bell Tel Co - Il
Illinois Bell Tel Co Heartland Communications, Inc.
Globalcom, Inc.-Il Globalcom
Global Crossing Local Services Forte Communications
Comcast Phone Of Illinois, Llc Cellular Paging Usa, Inc.
Cellco Partnership Dba Verizon Broadwing Communications, Llc
Blue Licenses Holding, Llc Beepermart, Inc.
At&T - Local - Il Arch Wireless Holdings, Inc.
American Messaging (Am), Inc. Allegiance Telecom Of Illinois
Air Free Paging Adbeep, Llc

773 Exchanges