Following carriers are support via Short code (5-6 digit) messaging. We cover 100% USA for local 10 digit numbers.
| Sprint |
| Cricket (Leap Wireless) |
| United States Cellular Corp |
| Verizon |
| T-Mobile |
| AT&T |
| C Spire Wireless (aka Cellular South) |
| IWireless |
| Virgin Mobile |
| Boost Mobile |
| Union Telephone |
| nTelos |
| TracFone (AT&T) |
| West Central Wireless |
| Bluegrass Cellular |
| Carolina West Wireless |
| Cellular One of N.E. Arizona |
| Rural Independent Network Alliance (RINA) |
| East Kentucky Network (Appalachian Wireless) |
| Illinois Valley Cellular |
| Inland Cellular |
| Nex Tech Communications |
| Pine Cellular |
| DTC Wireless |
| Boost-CDMA |
| CellCom |
| Limitless Mobile |
| ECIT/Cellular One of East Central Illinois |
| Alaska Communications Systems (ACS) |
| United Wireless |
| GCI Communications |
| Thumb Cellular |
| Cross Wireless |
| Chat Mobility |
| Northwest Missouri Cellular |
| Pioneer Cellular |
| Panhandle Wireless |
| Golden State Cellular |
| Viaero Wireless |
| Plateau Wireless |
| MTPCS Cellular One (Cellone Nation) |
| Cleartalk (Flat Wireless) |
| Epic Touch |
| Mosaic Telecom |
| Mobi PCS |
| Peoples Wireless |
| CableVision |
| Duet IP (Max. Wireless/Wireless Comm. Venture) |
| Chariton Valley Cellular |
| SouthernLINC |
| bandwidth.com (includes Republic Wireless) |
| MobileNation/SI Wireless |
| MTA Wireless/Matanuska Kenai |
| SRT Communications |
| Leaco Rural Telephone Cooperative |
| MetroPCS (GSM) |
| Aio Wireless |
| Sagebrush Cellular |
| Google Voice |
| Copper Valley Telecom |