| AT&T | Aliant Mobility |
| Alaska Communications Systems | Rogers Wireless |
| Alltel (Western Wireless & Midwest Wireless) | Virgin Mobile Canada |
| Bluegrass Cellular | Bell Mobility |
| Boost Mobile CDMA | SaskTel Mobility |
| Boost Mobile iDEN | WIND Mobile |
| Cellcom | Fido |
| Cellular South | Télébec Mobilité |
| 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 (now part of Alltel) | |
| NTELOS | |
| Nex-Tech Wireless | |
| Nextel Communications | |
| Northwest Missouri Cellular (Hawkeye) | |
| 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 (MTPCS Cellular One) | |
| Element Mobile | |
| Golden State | |
| iWiereless | |
| Plateau Wireless |
