Refer to the following table for the list of US carriers.
| Country | Carrier | Tier |
| US | T-Mobile | 1 |
| US | AT&T | 1 |
| US | Verizon-Alltel | 1 |
| US | Sprint | 1 |
| US | Cricket | 2 |
| US | U.S. Cellular | 2 |
| US | Boost | 2 |
| US | MetroPCS | 2 |
| US | Virgin Mobile | 2 |
| US | Appalachian Wireless | 3 |
| US | CellularOne (of North East Arizona) | 3 |
| US | Chariton Valley Cellular | 3 |
| US | Cross (dba Sprocket) | 3 |
| US | DTC Wireless | 3 |
| US | Duet IP | 3 |
| US | EpicTouch | 3 |
| US | Gold Star Communications | 3 |
| US | Leaco | 3 |
| US | Mobi PCS (Coral Wireless) | 3 |
| US | MobileNation/SI Wireless | 3 |
| US | Mosaic | 3 |
| US | MTA | 3 |
| US | Nemont/Sagebrush | 3 |
| US | Peoples Wireless | 3 |
| US | Pine Cellular | 3 |
| US | Pioneer | 3 |
| US | Republic Wireless (Bandwidth) | 3 |
| US | Revol Wireless | 3 |
| US | Rina - Custer | 3 |
| US | Rina- All West | 3 |
| US | Rina- Cambridge Telecom Coop (CTC | 3 |
| US | Rina- Eagle Valley Comm | 3 |
| US | Rina- Farmers Mutual Telephone Co | 3 |
| US | Rina- Nucla Nutria Telephone Co | 3 |
| US | Rina- Silver Star | 3 |
| US | Rina- South Central Comm | 3 |
| US | Rina- Syringa | 3 |
| US | Rina- UBET | 3 |
| US | Rina-Manti | 3 |
| US | United Wireless | 3 |
| US | C Spire Wireless (Cellsouth) | 3 |
| US | Carolina West Wireless | 3 |
| US | Cellcom | 3 |
| US | nTelos | 3 |
| US | ACS Inc., ACS Wireless Inc., Alaska Communications Systems, Inc | 3 |
| US | Bluegrass Cellular, Kentucky RSA 3 Cellular General Partnership; Kentucky RSA 4 Cellular General Partnership; Cumberland Cellular Partnership | 3 |
| US | Cable & Cellular Communications, LLC (d/b/a Mid-Rivers Communications) | 3 |
| US | Cablevision | 3 |
| US | Cellone Nation; MTPCS LLC | 3 |
| US | Cellular One of East Central Illinois; ECIT; Cellular Properties | 3 |
| US | Chat Mobility (Hawkeye Switching LLC) | 3 |
| US | ClearTalk; Flat Wireless, LLC; Flat West Wireless, LLC | 3 |
| US | Copper Valley | 3 |
| US | Cricket Wireless fka Aio Wireless | 3 |
| US | GCI Communications; Alaska DigiTel | 3 |
| US | Illinois Valley Cellular; IVC | 3 |
| US | Inland Cellular; Washington RSA No. 8 Limited Partnership | 3 |
| US | iWireless; Iowa Wireless Services | 3 |
| US | Limitless Mobile fka Immix; Keystone Wireless; PC Management | 3 |
| US | Nex-Tech Wireless | 3 |
| US | Northwest Missouri Cellular; Hawkeye Switching LLC | 3 |
| US | Plateau Wireless; Plateau Telecommunications, Inc., ENMR | 3 |
| US | PTCI (Panhandle Telephone Coop., Inc) PTSI (Panhandle Telecommunication System, Inc.) | 3 |
| US | SouthernLINC Wireless; SouthernLINC Communications | 3 |
| US | SRT Wireless; SRT Communications | 3 |
| US | Thumb Cellular | 3 |
| US | Union Wireless | 3 |
| US | Viaero Wireless; NE Colorado Inc. | 3 |
| US | West Central Wireless; WCC; Five Star Wireless | 3 |