STERLING — IL
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| ILLINOIS BELL TEL CO | 9329 | 8 |
| UNITED STATES CELLULAR - IL | 6265 | 3 |
| T-MOBILE USA, INC. | 6529 | 3 |
| IP HORIZON LLC | 515J | 1 |
| METROPCS, INC. | 5562 | 1 |
Data last updated: March 10, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| ILLINOIS BELL TEL CO | 9329 | 8 |
| UNITED STATES CELLULAR - IL | 6265 | 3 |
| T-MOBILE USA, INC. | 6529 | 3 |
| IP HORIZON LLC | 515J | 1 |
| METROPCS, INC. | 5562 | 1 |