510 Carriers

Xo California, Inc. Us Telepacific Corp. - Ca
Time Warner Telecom Of Califor The Telephone Connection Of Lo
Teleport Communications San Fr T-Mobile Usa, Inc.
Sprint Spectrum L.P. Silver Strand Enterprises, Llc
San Diego Paging Pacific Bell - Ca
Pacific Bell Pac-West Telecomm, Inc. - Ca
O1 Communications, Inc. North County Communication Cor
Nextel Communications, Inc. Network Services Llc
Mpower Communications Corp. - Metrocall
Metro Pcs, Inc. Mci Worldcom Communications, I
Mci Metro Ats, Inc. - Ca Level 3 Communications, Llc -
Level 3 Communications Kmc Telecom V, Inc.-Ca
Global Crossing Local Services Digitcom Services, Inc.
Cook Telecom, Inc. Commpartners, Llc - Ca
Comcast Phone Of California, L Cellco Partnership Dba Verizon
Brooks Fiber Communications Of Broadwing Communications, Llc
Blue Licenses Holding, Llc At&T - Local - Ca
Arch Wireless Holdings, Inc. American Messaging (Am), Inc.
Allegiance Telecom, Inc. - Ca

510 Exchanges