Participating carriers include:
- ACS/Alaska Advantage Cellular (DTC Wireless)
- Aio Wireless/Cricket
- Appalachian Wireless
- Atlantic Tele-Network International (ATN)
- AT&T
- Bandwidth
- Bluegrass Cellular
- Buffalo Wireless
- C Spire Wireless
- CableVision
- Carolina West Wireless (CWW)
- CellCom USA
- Cellular Network Partnership (PIONEER)
- Cellular One of East Central Illinois
- Chariton Valley Cellular
- Chat Mobility USA
- ClearTalk (Flat Wireless)
- Copper Valley
- Coral Wireless (Mobi PCS)
- Cross Telephone Company (MBO Wireless)
- Duet IP (Maximum Communications New Core Wireless)
- Element Mobile (Flat Wireless)
- Epic Touch (Elkhart Telephone)
- GCI Communications Corp
- Golden State Cellular
- Google Voice
- i Wireless (IOWA Wireless)
- Illinois Valley Cellular (IV Cellular)
- Immix (Keystone Wireless)
- Inland Cellular Telephone Company
- Leaco Mosaic (Consolidated or CTC Telecom)
- MTA Communications
- MTPCS (Cellular One Nation)
- Nex-Tech Wireless
- Northwest Missourri Cellular Limited
- Panhandle Telecommunications Systems (PTCI)
- Peoples Wireless
- Pine Belt Wireless
- Pine Cellular
- Revol Wireless USA
- RINA
- Sagebrush Cellular (Nemont)
- SI Wireless/Mobile Nation
- SouthernLinc
- Sprint/Boost/Virgin
- SRT Wireless
- T-Mobile/MetroPCS
- Texas RSA 3 Ltd (Plateau Wireless)
- Thumb Cellular
- Union Telephone Company (Union Wireless)
- United Wireless
- U.S. Cellular
- Verizon Wireless
- Viaero Wireless
- West Central Wireless (5 Star Wireless)