ONTARIO — OR
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| QWEST CORPORATION | 9638 | 3 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | 2 |
| ONVOY, LLC - OR | 750E | 2 |
| FARMERS MUTUAL TELEPHONE COMPANY - OR | 782H | 2 |
| SKYE TELECOM LLC DBA SKYETEL | 622J | 1 |