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67 prefixes in 224 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 224-204 | EVANSTON | 224C | 2015-12-21 | Yes |
| 224-206 | LIBERTYVL | 224C | — | Yes |
| 224-208 | BARTLETT | 224C | 2003-10-17 | Yes |
| 224-219 | WAUKEGAN | 224C | 2015-12-10 | Yes |
| 224-228 | BARRINGTON | 224C | 2012-09-28 | Yes |
| 224-249 | ALGONQUIN | 224C | 2013-08-02 | Yes |
| 224-257 | DESPLAINES | 224C | 2014-03-28 | Yes |
| 224-259 | ANTIOCH | 224C | 2016-02-17 | Yes |
| 224-262 | DESPLAINES | 224C | 2023-06-26 | Yes |
| 224-263 | HUNTLEY | 224C | 2016-03-08 | Yes |
| 224-290 | ELGIN | 224C | — | Yes |
| 224-296 | EVANSTON | 224C | 2018-12-05 | Yes |
| 224-298 | GRAYSLAKE | 224C | 2018-12-05 | Yes |
| 224-309 | NORTHBROOK | 224C | 2023-06-26 | Yes |
| 224-310 | ARLIGTNHTS | 224C | — | Yes |
| 224-312 | ROSELLE | 224C | 2023-06-26 | Yes |
| 224-313 | WHEELING | 224C | 2015-12-23 | Yes |
| 224-328 | WINNETKA | 224C | 2020-05-28 | Yes |
| 224-331 | WAUKEGAN | 224C | 2023-06-26 | Yes |
| 224-344 | WILMETTE | 224C | 2020-05-28 | Yes |
| 224-365 | NORTHBROOK | 224C | — | Yes |
| 224-371 | GRAYSLAKE | 224C | 2021-02-04 | Yes |
| 224-378 | LIBERTYVL | 224C | 2021-03-30 | Yes |
| 224-379 | PARK RIDGE | 224C | 2021-03-30 | Yes |
| 224-393 | HUNTLEY | 224C | 2021-06-09 | Yes |
| 224-394 | BARTLETT | 224C | 2021-07-14 | Yes |
| 224-395 | BENSENVL | 224C | 2021-07-14 | Yes |
| 224-403 | WILMETTE | 224C | 2021-08-12 | Yes |
| 224-445 | ANTIOCH | 224C | 2021-06-01 | Yes |
| 224-451 | BARRINGTON | 224C | 2020-06-22 | Yes |
| 224-452 | PALATINE | 224C | 2021-05-04 | Yes |
| 224-472 | WINNETKA | 224C | 2021-05-04 | Yes |
| 224-487 | CARY | 224C | 2016-02-24 | Yes |
| 224-496 | SKOKIE | 224C | 2023-06-26 | Yes |
| 224-497 | ELGIN | 224C | 2023-07-11 | Yes |
| 224-502 | ROUND LAKE | 224C | 2023-08-16 | Yes |
| 224-505 | WINNETKA | 224C | 2014-12-17 | Yes |
| 224-506 | DESPLAINES | 224C | 2023-09-18 | Yes |
| 224-514 | ALGONQUIN | 224C | 2023-09-19 | Yes |
| 224-524 | ROSELLE | 224C | 2023-10-03 | Yes |
| 224-560 | LIBERTYVL | 224C | 2024-01-10 | Yes |
| 224-561 | PALATINE | 224C | 2024-01-10 | Yes |
| 224-562 | ARLIGTNHTS | 224C | 2024-01-24 | Yes |
| 224-573 | ELGIN | 224C | 2024-01-24 | Yes |
| 224-574 | SKOKIE | 224C | 2024-01-24 | Yes |
| 224-576 | WAUKEGAN | 224C | 2024-01-24 | Yes |
| 224-579 | HUNTLEY | 224C | 2024-02-01 | Yes |
| 224-581 | HAMPSHIRE | 224C | 2024-02-02 | Yes |
| 224-582 | LAKE VILLA | 224C | 2024-02-02 | Yes |
| 224-583 | FRANKLINPK | 224C | 2024-02-02 | Yes |
| 224-584 | WHEELING | 224C | 2024-02-02 | Yes |
| 224-589 | DEERFIELD | 224C | 2024-02-20 | Yes |
| 224-590 | HIGHLANDPK | 224C | 2024-02-20 | Yes |
| 224-593 | GLENVIEW | 224C | 2024-03-07 | Yes |
| 224-594 | BARRINGTON | 224C | 2024-03-07 | Yes |
| 224-596 | MUNDELEIN | 224C | 2024-03-07 | Yes |
| 224-597 | LAKEZURICH | 224C | 2024-03-11 | Yes |
| 224-635 | ELK GROVE | 224C | 2009-01-30 | Yes |
| 224-639 | NORTHBROOK | 224C | — | Yes |
| 224-640 | FOX LAKE | 224C | 2025-02-05 | Yes |
| 224-644 | PALATINE | 224C | 2025-03-13 | Yes |
| 224-675 | CARY | 224C | 2025-12-18 | Yes |
| 224-680 | ELGIN | 224C | 2026-01-27 | Yes |
| 224-686 | PARK RIDGE | 224C | 2026-04-16 | Yes |
| 224-747 | HAMPSHIRE | 224C | 2016-03-24 | Yes |
| 224-840 | ELGIN | 224C | 2021-03-30 | Yes |
| 224-877 | ELK GROVE | 224C | 2016-02-02 | 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.