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27 prefixes in 618 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 618-300 | CARBONDALE | 224C | 2011-02-17 | Yes |
| 618-400 | MILLSTADT | 224C | — | Yes |
| 618-431 | VANDALIA | 224C | — | Yes |
| 618-491 | COLLINSVL | 224C | 2016-05-13 | Yes |
| 618-492 | EDGEWOOD | 224C | 2018-10-23 | Yes |
| 618-500 | GRANITE CY | 224C | 2017-10-18 | Yes |
| 618-591 | ELDORADO | 224C | 2020-07-06 | Yes |
| 618-598 | OKAWVILLE | 224C | 2020-07-06 | Yes |
| 618-600 | GRANITE CY | 224C | 2015-09-25 | Yes |
| 618-617 | OLNEY | 224C | 2019-12-18 | Yes |
| 618-620 | HAMBURG | 224C | 2020-06-05 | Yes |
| 618-666 | COLLINSVL | 224C | 2015-09-24 | Yes |
| 618-668 | GOLCONDA | 224C | 2018-08-01 | Yes |
| 618-716 | TRENTON | 224C | 2016-08-25 | Yes |
| 618-718 | ALBION | 224C | 2019-12-30 | Yes |
| 618-800 | EDWARDSVL | 224C | 2015-09-16 | Yes |
| 618-801 | GRANITE CY | 224C | 2016-08-24 | Yes |
| 618-812 | IUKA | 224C | 2022-12-08 | Yes |
| 618-848 | CENTRALIA | 224C | 2022-05-09 | Yes |
| 618-855 | COLLINSVL | 224C | 2008-05-12 | Yes |
| 618-900 | COLLINSVL | 224C | 2017-10-02 | Yes |
| 618-914 | KASKASKIA | 224C | 2022-12-08 | Yes |
| 618-961 | GLENCARBON | 224C | 2016-08-24 | Yes |
| 618-970 | AVA | 224C | 2023-07-26 | Yes |
| 618-990 | WOOD RIVER | 224C | 2023-08-16 | Yes |
| 618-991 | RAMSEY | 224C | 2023-08-22 | Yes |
| 618-999 | EDWARDSVL | 224C | 2015-03-02 | 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.