OLNEY — IL
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 9 |
| FRONTIER NORTH, INC. - IL | 1015 | 3 |
| ONVOY, LLC | 224C | 2 |
| ONVOY SPECTRUM, LLC | 624H | 2 |
| IP HORIZON LLC | 515J | 1 |
Data last updated: March 10, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 9 |
| FRONTIER NORTH, INC. - IL | 1015 | 3 |
| ONVOY, LLC | 224C | 2 |
| ONVOY SPECTRUM, LLC | 624H | 2 |
| IP HORIZON LLC | 515J | 1 |