MARSHALL — MI
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| ONVOY, LLCV - MI | 543C | 2 |
| MICHIGAN BELL TEL CO | 9323 | 2 |
| METROPCS, INC. | 5562 | 1 |
| LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | 1 |
| PAETEC ITEL, LLC | 829J | 1 |
Data last updated: March 10, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| ONVOY, LLCV - MI | 543C | 2 |
| MICHIGAN BELL TEL CO | 9323 | 2 |
| METROPCS, INC. | 5562 | 1 |
| LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | 1 |
| PAETEC ITEL, LLC | 829J | 1 |