E ST LOUIS — IL
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| ILLINOIS BELL TEL CO | 9329 | 10 |
| ONVOY, LLC | 224C | 1 |
| BOOST SUBSCRIBERCO L.L.C. | 490J | 1 |
| METROPCS, INC. | 5562 | 1 |
| T-MOBILE USA, INC. | 6529 | 1 |
Data last updated: June 25, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| ILLINOIS BELL TEL CO | 9329 | 10 |
| ONVOY, LLC | 224C | 1 |
| BOOST SUBSCRIBERCO L.L.C. | 490J | 1 |
| METROPCS, INC. | 5562 | 1 |
| T-MOBILE USA, INC. | 6529 | 1 |