CAIRO — IL
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| TERRA NOVA TELECOM INC. | 145J | 1 |
| VONAGE AMERICA LLC | 197D | 1 |
| CALLWORKS CORPORATION | 475J | 1 |
| IP HORIZON LLC | 515J | 1 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | 1 |