RICHMOND — MI
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| ONVOY, LLCV - MI | 543C | 2 |
| FRONTIER NORTH, INC. - MI | 0695 | 1 |
| OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | 1 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 770E | 1 |
| TELNET WORLDWIDE, INC. | 817J | 1 |