AboveNet ACC Business Accel Networks AccuConference Airband AireSpring AT&T (formerly: BellSouth/PacBell/SBC/Ameritech) BandTel Broad Sky Networks Broadweave Celairo Ernest Communications GTT Global Crossing Internap Level 3 (formerly: Broadwing) NBS MegaPath (formerly: Netifice/Covad/Speakeasy) Mosaic Networx New Edge Networks NiTel One Communications Paetec (formerly: US LEC/McLeodUSA/Cavalier) PowerNet Global Qwest Savvis Smoothstone Sprint/Nextel TelePacific Telnes Broadband Telx Time Warner Cable Business Class TW Telecom (formerly: Xspedius) TMC Communications UCN USA Digital Vocal IP Networx Windstream (formerly: Nuvox) XO Communications
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