| AT&T | Aliant Mobility | BT (PSTN) |
| Alaska Communications Systems | Rogers Wireless | Everything Everywhere (Orange) |
| Alltel | Virgin Mobile Canada | Everything Everywhere |
| Bluegrass Cellular | Bell Mobility | (T-Mobile,Deutsche Telekom) |
| Boost Mobile CDMA | SaskTel Mobility | O2 (BT Cellnet,Telefonica) |
| Boost Mobile iDEN | WIND Mobile | Three 3G (Hutchison) |
| Cellcom | Fido | Virgin Mobile |
| Cellular South | Télébec Mobilité | Vodafone |
| Centennial | MTS | |
| Chat Mobility (Hawkeye) | TELUS Mobility | |
| Cincinnati Bell | NorthernTel Mobility | |
| Cox Wireless | Vidéotron | |
| Cricket (Leap Wireless) | ||
| ECIT (Cellular One of East Illinois) | ||
| East Kentucky Network | ||
| Enid/Pioneer Cellular | ||
| GCI Communications | ||
| Illinois Valley Cellular | ||
| Inland Cellular | ||
| Metro PCS | ||
| Midwest Wireless | ||
| NTELOS | ||
| Nex-Tech Wireless | ||
| Nextel Communications | ||
| Northwest Missouri Cellular | ||
| Panhandle Wireless | ||
| Pocket Wireless | ||
| Revol Wireless | ||
| Rural Cellular Corp. | ||
| Sprint PCS Wireless | ||
| T-Mobile | ||
| TMP/Simmetry | ||
| Thumb Cellular | ||
| U.S. Cellular | ||
| Union Telephone | ||
| United Wireless | ||
| Verizon Wireless | ||
| Virgin Mobile USA | ||
| West Central Wireless | ||
| Cellular Once of Montana | ||
| Element Mobile | ||
| Golden State | ||
| iWiereless | ||
| Plateau Wireless | ||
| RINA | ||
| Duet IP |
