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74 prefixes in 309 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 309-220 | WASHBURN | 224C | 2002-10-16 | Yes |
| 309-223 | NORTHPEKIN | 224C | 2021-06-24 | Yes |
| 309-225 | KEITHSBURG | 224C | 2021-06-24 | Yes |
| 309-240 | DUNLAP | 224C | 2002-10-16 | Yes |
| 309-250 | EDELSTEIN | 224C | 2002-10-16 | Yes |
| 309-260 | BLOOMINGTN | 224C | 2021-08-05 | Yes |
| 309-271 | PEORIA | 224C | 2017-09-21 | Yes |
| 309-280 | PEORIA | 224C | — | Yes |
| 309-290 | MINERAL | 224C | 2002-10-16 | Yes |
| 309-301 | TOULON | 224C | 2002-10-16 | Yes |
| 309-309 | WASHINGTON | 224C | 2022-09-26 | Yes |
| 309-312 | KEWANEE | 224C | — | Yes |
| 309-316 | DELAVAN | 224C | 2017-03-20 | Yes |
| 309-354 | MACKINAW | 224C | 2002-10-16 | Yes |
| 309-356 | HENRY | 224C | 2002-10-16 | Yes |
| 309-384 | EDELSTEIN | 224C | 2021-07-28 | Yes |
| 309-386 | BLOOMINGTN | 224C | — | Yes |
| 309-393 | BENSON | 224C | — | Yes |
| 309-395 | GROVELAND | 224C | 2002-10-16 | Yes |
| 309-396 | PRINCEVL | 224C | 2002-10-16 | Yes |
| 309-398 | LA ROSE | 224C | 2002-10-16 | Yes |
| 309-440 | DEER CREEK | 224C | 2002-10-16 | Yes |
| 309-442 | BRIMFIELD | 224C | 2002-10-16 | Yes |
| 309-450 | CONGERVL | 224C | 2002-10-16 | Yes |
| 309-455 | HOPEDALE | 224C | 2002-10-16 | Yes |
| 309-460 | LOW POINT | 224C | 2002-10-16 | Yes |
| 309-461 | MINONK | 224C | 2002-10-16 | Yes |
| 309-466 | EUREKA | 224C | 2002-10-16 | Yes |
| 309-471 | SPARLAND | 224C | — | Yes |
| 309-474 | VARNA | 224C | 2002-10-16 | Yes |
| 309-480 | CASTLETON | 224C | 2002-10-16 | Yes |
| 309-492 | CAMPGROVE | 224C | 2002-10-16 | Yes |
| 309-505 | SUNNYLAND | 224C | 2003-01-17 | Yes |
| 309-541 | GALESBURG | 224C | 2015-11-17 | Yes |
| 309-568 | ANDOVER | 224C | — | Yes |
| 309-580 | MOSSVILLE | 224C | 2002-10-16 | Yes |
| 309-590 | BLOOMINGTN | 224C | 2018-11-15 | Yes |
| 309-595 | NEPONSET | 224C | 2002-10-16 | Yes |
| 309-601 | MOLINE | 224C | 2015-03-05 | — |
| 309-602 | SHERRARD | 224C | — | Yes |
| 309-607 | ROCKISLAND | 224C | 2015-03-05 | — |
| 309-610 | FORESTCITY | 224C | 2018-09-20 | Yes |
| 309-617 | DUNLAP | 224C | — | Yes |
| 309-640 | HAVANA | 224C | 2018-09-20 | Yes |
| 309-650 | PEKIN | 224C | 2018-09-21 | Yes |
| 309-702 | WYOMING | 224C | 2002-10-16 | Yes |
| 309-708 | MINIERAGTN | 224C | 2023-06-26 | Yes |
| 309-741 | ELMWOOD | 224C | 2002-10-16 | Yes |
| 309-780 | TALBOTT | 224C | 2018-09-21 | Yes |
| 309-790 | TOPEKA | 224C | 2018-09-21 | Yes |
| 309-800 | LEXINGTON | 224C | 2024-06-03 | Yes |
| 309-815 | STANFORD | 224C | 2023-06-26 | Yes |
| 309-857 | PEORIA | 224C | 2009-04-06 | Yes |
| 309-894 | BUDA | 224C | 2002-10-16 | Yes |
| 309-898 | BRADFORD | 224C | 2002-10-16 | Yes |
| 309-899 | ELMIRA | 224C | 2002-10-16 | Yes |
| 309-903 | ROCKISLAND | 224C | 2020-02-24 | Yes |
| 309-904 | JOY | 224C | 2021-10-05 | Yes |
| 309-905 | NEW BOSTON | 224C | 2021-10-05 | Yes |
| 309-908 | WASHBURN | 224C | 2021-10-05 | Yes |
| 309-910 | EDGINGTON | 224C | 2021-04-30 | Yes |
| 309-915 | TREMONT | 224C | 2021-10-05 | Yes |
| 309-918 | KEWANEE | 224C | 2023-02-07 | Yes |
| 309-921 | ROANOKE | 224C | — | Yes |
| 309-929 | TREMONT | 224C | 2002-10-16 | Yes |
| 309-951 | WASHINGTON | 224C | 2026-08-26 | Yes |
| 309-952 | ALPHA | 224C | 2023-06-26 | Yes |
| 309-960 | KIRKWOOD | 224C | 2024-06-03 | Yes |
| 309-964 | GOODFIELD | 224C | 2002-10-16 | Yes |
| 309-975 | AVON | 224C | — | Yes |
| 309-981 | PEORIA | 224C | 2008-12-15 | Yes |
| 309-983 | ELLSWORTH | 224C | 2021-04-18 | Yes |
| 309-988 | LACON | 224C | — | Yes |
| 309-993 | ARROWSMITH | 224C | 2021-04-18 | 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.