ALTON — MO
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| UNITED STATES CELLULAR - MO | 6275 | 1 |
| BRIGHTSPEED OF MISSOURI, LLC | 9787 | 1 |
| BANDWIDTH.COM CLEC, LLC - MO | 993E | 1 |
Data last updated: June 25, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| UNITED STATES CELLULAR - MO | 6275 | 1 |
| BRIGHTSPEED OF MISSOURI, LLC | 9787 | 1 |
| BANDWIDTH.COM CLEC, LLC - MO | 993E | 1 |