OLMSTEDFLS — OH
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| ONVOY, LLC - OH | 464C | 2 |
| LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | 2 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | 2 |
| OHIO BELL TEL CO | 9321 | 2 |
| T-MOBILE USA, INC. | 6529 | 1 |