ROCK — MI
Data last updated: October 30, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| BARAGA TELEPHONE COMPANY | 4253 | 1 |
| ONVOY, LLCV - MI | 543C | 1 |
| INTERACTIVE SERVICES NETWORK, INC. | 817J | 1 |
| MICHIGAN BELL TEL CO | 9323 | 1 |
Data last updated: October 30, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| BARAGA TELEPHONE COMPANY | 4253 | 1 |
| ONVOY, LLCV - MI | 543C | 1 |
| INTERACTIVE SERVICES NETWORK, INC. | 817J | 1 |
| MICHIGAN BELL TEL CO | 9323 | 1 |