CENTRALIA — IL
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 27 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | 5 |
| ILLINOIS BELL TEL CO | 9329 | 4 |
| ONVOY, LLC | 224C | 1 |
| AMERICAN MESSAGING SERVICES, LLC | 9748 | 1 |