ST LOUIS — MO
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| SOUTHWESTERN BELL | 9533 | 128 |
| T-MOBILE USA, INC. | 6529 | 32 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 22 |
| ONVOY, LLC - MO | 093F | 19 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | 17 |