SYLVANIA — OH
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| FRONTIER NORTH, INC. - OH | 0615 | 6 |
| ONVOY, LLC - OH | 464C | 2 |
| PEERLESS NETWORK OF OHIO, LLC - OH | 284F | 1 |
| HD CARRIER LLC | 321J | 1 |
| LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | 1 |