- ACS/Alaska
- Alltel (Verizon Wireless)
- AT&T
- Bluegrass Cellular
- Boost
- Carolina West
- Cellcom
- Cellone Nation
- Cellsouth
- Cellular One of East Central Illinois
- Centennial Wireless
- Cincinnati Bell Wireless
- Cox Communications
- Cricket
- Cross (Sprocket)
- Duet IP (AKA Max/Benton/Albany)
- EKN/Appalachian Wireless
- Element Mobile
- Epic Touch
- GCI
- Hawkeye (Chat Mobility)
- Hawkeye (NW Missouri Cellular)
- Illinois Valley Cellular
- Immix/Keystone Wireless
- Inland Cellular
- iWireless
- MetroPCS
- Mobi PCS
- Mosaic
- Nex-Tech Wireless
- Nextel
- nTelos
- Panhandle Telecommunications
- Peoples Wireless
- Pioneer
- Plateau Wireless
- Revol
- Rina - Custer
- Rina- All West
- Rina- Cambridge Telecom Coop
- Rina- Eagle Valley Comm
- Rina- Farmers Mutual Telephone Co
- Rina- Nucla Nutria Telephone Co
- Rina- Silver Star
- Rina- South Central Comm
- Rina- Syringa
- Rina- UBET
- Rina-Manti
- Simmetry
- Sprint
- Thumb Cellular
- T-Mobile
- Union Wireless
- United Wireless
- US Cellular
- Verizon Wireless
- Viaero Wireless
- Virgin Mobile
- WCC
