MIDDLEVL — MI
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| ONVOY, LLCV - MI | 543C | 1 |
| LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | 1 |
| CHARTER IP ENABLED SERVICES, LLC | 792K | 1 |
| TELNET WORLDWIDE, INC. | 817J | 1 |
| PAETEC ITEL, LLC | 829J | 1 |