ILLINOIS BELL TEL CO
111 prefixes in 618 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 618-776 | OLIVE BRCH | 9329 | — | Yes |
| 618-797 | GRANITE CY | 9329 | — | Yes |
| 618-798 | GRANITE CY | 9329 | — | Yes |
| 618-822 | KELL | 9329 | — | Yes |
| 618-825 | BELLEVILLE | 9329 | — | Yes |
| 618-874 | E ST LOUIS | 9329 | — | Yes |
| 618-875 | E ST LOUIS | 9329 | — | Yes |
| 618-876 | GRANITE CY | 9329 | — | Yes |
| 618-877 | GRANITE CY | 9329 | — | — |
| 618-887 | MARINE | 9329 | — | Yes |
| 618-931 | GRANITE CY | 9329 | — | — |
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.