CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL
26 prefixes in 217 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 217-256 | WARSAW | 1183 | — | — |
| 217-272 | SORENTO | 1183 | — | Yes |
| 217-357 | CARTHAGE | 1183 | — | Yes |
| 217-448 | NIOTA | 1183 | — | Yes |
| 217-453 | NAUVOO | 1183 | — | — |
| 217-456 | NEWDOUGLAS | 1183 | — | Yes |
| 217-482 | MASON CITY | 1183 | — | — |
| 217-534 | COFFEEN | 1183 | — | Yes |
| 217-536 | WATSON | 1183 | — | Yes |
| 217-537 | DONNELLSON | 1183 | — | Yes |
| 217-538 | FILLMORE | 1183 | — | — |
| 217-575 | WARSAW | 1183 | — | Yes |
| 217-658 | SUTTER | 1183 | — | Yes |
| 217-743 | BASCO | 1183 | — | Yes |
| 217-746 | FERRIS | 1183 | — | Yes |
| 217-835 | BENLD | 1183 | — | Yes |
| 217-839 | GILLESPIE | 1183 | — | Yes |
| 217-842 | BOWEN | 1183 | — | Yes |
| 217-845 | ELVASTON | 1183 | — | Yes |
| 217-847 | HAMILTON | 1183 | — | — |
| 217-852 | DALLASCITY | 1183 | — | — |
| 217-854 | CARLINVL | 1183 | — | — |
| 217-857 | TEUTOPOLIS | 1183 | — | — |
| 217-868 | SHUMWAY | 1183 | — | — |
| 217-968 | GREENVIEW | 1183 | — | — |
| 217-999 | MOUNTOLIVE | 1183 | — | Yes |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.