WASHINGTON — IL
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| FRONTIER NORTH, INC. - IL | 1015 | 2 |
| ONVOY, LLC | 224C | 1 |
| ITV-3, LLC D/B/A I3 BROADBAND | 5800 | 1 |
| T-MOBILE USA, INC. | 6529 | 1 |
Data last updated: March 10, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| FRONTIER NORTH, INC. - IL | 1015 | 2 |
| ONVOY, LLC | 224C | 1 |
| ITV-3, LLC D/B/A I3 BROADBAND | 5800 | 1 |
| T-MOBILE USA, INC. | 6529 | 1 |