DUPO — IL
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| HARRISONVILLE TEL. CO. | 1026 | 1 |
| METROPCS, INC. | 5562 | 1 |
| CHARTER IP ENABLED SERVICES, LLC | 792K | 1 |
Data last updated: March 10, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| HARRISONVILLE TEL. CO. | 1026 | 1 |
| METROPCS, INC. | 5562 | 1 |
| CHARTER IP ENABLED SERVICES, LLC | 792K | 1 |