BIRCH RUN — MI
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| ONVOY, LLCV - MI | 543C | 2 |
| INTERACTIVE SERVICES NETWORK, INC. | 817J | 1 |
| PAETEC ITEL, LLC | 829J | 1 |
| MICHIGAN BELL TEL CO | 9323 | 1 |
Data last updated: March 10, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| ONVOY, LLCV - MI | 543C | 2 |
| INTERACTIVE SERVICES NETWORK, INC. | 817J | 1 |
| PAETEC ITEL, LLC | 829J | 1 |
| MICHIGAN BELL TEL CO | 9323 | 1 |