UNITED STATES CELLULAR - IL
23 prefixes in 815 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 815-213 | STERLING | 6265 | 2004-09-29 | Yes |
| 815-243 | ROCKFORD | 6265 | — | Yes |
| 815-281 | GALENA | 6265 | 2004-06-15 | Yes |
| 815-289 | ROCKFORD | 6265 | — | Yes |
| 815-291 | FREEPORT | 6265 | — | Yes |
| 815-299 | ROCKFORD | 6265 | — | Yes |
| 815-319 | ROCKFORD | 6265 | — | Yes |
| 815-375 | DE KALB | 6265 | — | Yes |
| 815-494 | ROCKFORD | 6265 | — | Yes |
| 815-499 | STERLING | 6265 | — | Yes |
| 815-541 | FREEPORT | 6265 | — | Yes |
| 815-543 | ROCKFORD | 6265 | — | Yes |
| 815-558 | ROCKFORD | 6265 | — | Yes |
| 815-601 | ROCKFORD | 6265 | — | Yes |
| 815-718 | STERLING | 6265 | 2002-10-22 | Yes |
| 815-742 | ROCKFORD | 6265 | — | Yes |
| 815-757 | DE KALB | 6265 | — | Yes |
| 815-764 | DE KALB | 6265 | — | Yes |
| 815-766 | DE KALB | 6265 | — | Yes |
| 815-821 | FREEPORT | 6265 | 2001-05-22 | Yes |
| 815-871 | ROCKFORD | 6265 | — | Yes |
| 815-973 | DIXON | 6265 | — | Yes |
| 815-988 | ROCKFORD | 6265 | — | 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.