- @road
- 1Wire
- AboveNet
- ACC
- Access One
- Alltel
- Access Point
- Andiamo Telecom
- ATI
- AT&T (All Regions)
- BlackBerry
- Broad Sky Networks
- Broadview (InfoHighway)
- China Telecom Americas
- Cisco
- Concentric
- Copper Conferencing
- Covad
- Cox Business
- Cypress
- EMBARQ
- Nextel
- Nortel
- Optimum Lightpath
- PAETEC
- PalmOne
- Premier Global
- Primus Canada
- Propadoo
- Qwest
- Savvis
- Sparkplug
- Sprint
- TelePacific Communications
- Time Warner Telecom
- TMC
- T-Mobile
- TNCI
- Trimble
- Verizon Business
- Verizon Wireless
- XO Communications
- Xspedius Communications
- eSquared Consulting
- Freedom Voice
- Fusion
- Global Crossing
- Goldmail
- GPVoice
- HP
- Integra Telecom
- Intelisys Mobility
- InterCall (Raindance)
- Internap
- Level 3
- MASERGY
- McGraw
- McLeod USA
- MegaPath
- Mpower Communications
- NEC
- Netwolves
- Network Car
- New Edge Networks