312 Carriers

Ymax Communcations Corp. - Fl Xo Illinois, Inc.
United States Cellular Corp. Teleport Communications Chicag
Tds Metrocom, Inc. - Il T-Mobile Usa, Inc.
Sprint Spectrum L.P. Sprint Communications Company,
Southwestern Bell Mobile Syste Rcn Telecom Services Of Illino
Paetec Communications, Inc. - Pac-West Telecomm, Inc. - Il
Ovation Communications Of Illi Nextel Communications, Inc.
Neutral Tandem-Illinois, Llc - Multi Computer Systems, Inc.
Metrocall Mci Worldcom Communications, I
Mci Metro Ats, Inc. - Il Level 3 Communications, Llc -
Kmc Telecom V, Inc. - Il Integrated Communications Cons
Infotelecom Illinois Bell Tel Co Il
Illinois Bell Tel Co - Il Illinois Bell Tel Co
Heartland Communications, Inc. Globalcom, Inc.-Il
Globalcom Global Naps, Inc. - Il
Global Crossing Local Services Geotek Communications
Equivoice Cimco Communications, Inc. - I
Cellular Paging Usa, Inc. Cellco Partnership Dba Verizon
Broadwing Communications, Llc Broadband Office Communication
Blue Licenses Holding, Llc Beepermart, Inc.
At&T - Local - Il Arch Wireless Holdings, Inc.
American Messaging (Am), Inc. Allegiance Telecom Of Illinois
Adbeep, Llc

312 Exchanges