FRONTIER NORTH, INC. - IL
99 prefixes in 309 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 309-243 | DUNLAP | 1015 | — | Yes |
| 309-248 | WASHBURN | 1015 | — | Yes |
| 309-249 | EDELSTEIN | 1015 | — | Yes |
| 309-263 | MORTON | 1015 | — | — |
| 309-266 | MORTON | 1015 | — | — |
| 309-268 | BLOOMINGTN | 1015 | — | — |
| 309-274 | CHILLICOTH | 1015 | — | Yes |
| 309-284 | MORTON | 1015 | — | Yes |
| 309-286 | TOULON | 1015 | — | Yes |
| 309-288 | MINERAL | 1015 | — | Yes |
| 309-295 | MACOMB | 1015 | — | Yes |
| 309-298 | MACOMB | 1015 | — | — |
| 309-304 | EUREKA | 1015 | 2004-10-14 | Yes |
| 309-329 | ASTORIA | 1015 | — | Yes |
| 309-359 | MACKINAW | 1015 | — | Yes |
| 309-364 | HENRY | 1015 | — | Yes |
| 309-365 | LEXINGTON | 1015 | — | Yes |
| 309-376 | CARLOCK | 1015 | — | Yes |
| 309-377 | CROPSEY | 1015 | — | Yes |
| 309-378 | DOWNS | 1015 | — | Yes |
| 309-379 | STANFORD | 1015 | — | Yes |
| 309-385 | PRINCEVL | 1015 | — | Yes |
| 309-387 | GROVELAND | 1015 | — | Yes |
| 309-392 | MINIERAGTN | 1015 | — | Yes |
| 309-394 | BENSON | 1015 | — | Yes |
| 309-399 | LA ROSE | 1015 | — | Yes |
| 309-432 | MINONK | 1015 | — | Yes |
| 309-434 | BLOOMINGTN | 1015 | — | Yes |
| 309-436 | BLOOMINGTN | 1015 | — | — |
| 309-438 | BLOOMINGTN | 1015 | — | — |
| 309-443 | LOW POINT | 1015 | — | Yes |
| 309-444 | WASHINGTON | 1015 | — | Yes |
| 309-446 | BRIMFIELD | 1015 | — | Yes |
| 309-449 | HOPEDALE | 1015 | — | Yes |
| 309-451 | BLOOMINGTN | 1015 | — | — |
| 309-452 | BLOOMINGTN | 1015 | — | — |
| 309-454 | BLOOMINGTN | 1015 | — | — |
| 309-463 | VARNA | 1015 | — | Yes |
| 309-467 | EUREKA | 1015 | — | Yes |
| 309-469 | SPARLAND | 1015 | — | Yes |
| 309-473 | HEYWORTH | 1015 | — | Yes |
| 309-475 | SAYBROOK | 1015 | — | Yes |
| 309-479 | CASTLETON | 1015 | — | Yes |
| 309-493 | CAMPGROVE | 1015 | — | Yes |
| 309-556 | BLOOMINGTN | 1015 | — | — |
| 309-557 | BLOOMINGTN | 1015 | — | Yes |
| 309-572 | MOSSVILLE | 1015 | — | — |
| 309-576 | MOSSVILLE | 1015 | — | Yes |
| 309-577 | MOSSVILLE | 1015 | — | — |
| 309-578 | MOSSVILLE | 1015 | — | — |
| 309-579 | MOSSVILLE | 1015 | — | Yes |
| 309-594 | NEPONSET | 1015 | — | Yes |
| 309-622 | BLOOMINGTN | 1015 | 2001-03-20 | Yes |
| 309-661 | BLOOMINGTN | 1015 | — | — |
| 309-662 | BLOOMINGTN | 1015 | — | — |
| 309-663 | BLOOMINGTN | 1015 | — | — |
| 309-664 | BLOOMINGTN | 1015 | — | — |
| 309-695 | WYOMING | 1015 | — | Yes |
| 309-722 | BELLFLOWER | 1015 | — | Yes |
| 309-723 | COLFAX | 1015 | — | Yes |
| 309-724 | ELLSWORTH | 1015 | — | Yes |
| 309-726 | HUDSON | 1015 | — | Yes |
| 309-727 | ARROWSMITH | 1015 | — | Yes |
| 309-742 | ELMWOOD | 1015 | — | Yes |
| 309-745 | SUNNYLAND | 1015 | — | Yes |
| 309-770 | WYOMING | 1015 | 2001-05-21 | Yes |
| 309-772 | BUSHNELL | 1015 | — | Yes |
| 309-775 | PRAIRIE CY | 1015 | — | Yes |
| 309-784 | VERMONT | 1015 | — | Yes |
| 309-785 | CUBA | 1015 | — | Yes |
| 309-819 | SUNNYLAND | 1015 | 2001-05-21 | Yes |
| 309-820 | BLOOMINGTN | 1015 | — | — |
| 309-821 | BLOOMINGTN | 1015 | — | — |
| 309-823 | BLOOMINGTN | 1015 | — | — |
| 309-827 | BLOOMINGTN | 1015 | — | — |
| 309-828 | BLOOMINGTN | 1015 | — | — |
| 309-829 | BLOOMINGTN | 1015 | — | — |
| 309-831 | BLOOMINGTN | 1015 | 2001-05-21 | Yes |
| 309-833 | MACOMB | 1015 | — | Yes |
| 309-836 | MACOMB | 1015 | — | Yes |
| 309-837 | MACOMB | 1015 | — | Yes |
| 309-851 | KEWANEE | 1015 | 2002-10-16 | Yes |
| 309-852 | KEWANEE | 1015 | — | Yes |
| 309-853 | KEWANEE | 1015 | — | Yes |
| 309-854 | KEWANEE | 1015 | — | Yes |
| 309-856 | KEWANEE | 1015 | — | Yes |
| 309-862 | BLOOMINGTN | 1015 | — | — |
| 309-866 | MORTON | 1015 | 2001-05-21 | Yes |
| 309-874 | MCLEAN | 1015 | — | Yes |
| 309-886 | WASHINGTON | 1015 | — | Yes |
| 309-888 | BLOOMINGTN | 1015 | — | — |
| 309-895 | BUDA | 1015 | — | Yes |
| 309-896 | ELMIRA | 1015 | — | Yes |
| 309-897 | BRADFORD | 1015 | — | Yes |
| 309-923 | ROANOKE | 1015 | — | Yes |
| 309-925 | TREMONT | 1015 | — | Yes |
| 309-928 | FARMERCITY | 1015 | — | Yes |
| 309-932 | GALVA | 1036 | — | Yes |
| 309-962 | LE ROY | 1015 | — | 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.