All assignees
609 prefixes in 224 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 224-500 | DESPLAINES | 6333 | 2011-01-12 | Yes |
| 224-501 | NORTHBROOK | 6333 | 2012-08-07 | Yes |
| 224-502 | ROUND LAKE | 224C | 2023-08-16 | Yes |
| 224-503 | NORTHBROOK | 6529 | 2014-10-24 | Yes |
| 224-504 | LIBERTYVL | 6529 | 2014-11-14 | Yes |
| 224-505 | WINNETKA | 224C | 2014-12-17 | Yes |
| 224-506 | DESPLAINES | 224C | 2023-09-18 | Yes |
| 224-507 | DEERFIELD | 6534 | 2014-12-19 | Yes |
| 224-508 | ELGIN | 6529 | 2014-07-21 | Yes |
| 224-509 | ALGONQUIN | 7196 | 2015-01-05 | Yes |
| 224-510 | WHEELING | 7136 | 2015-01-20 | Yes |
| 224-511 | XXXXXXXXXX | MULT | — | — |
| 224-512 | BARRINGTON | 9329 | 2002-01-17 | Yes |
| 224-513 | LIBERTYVL | 6115 | 2006-04-03 | Yes |
| 224-514 | ALGONQUIN | 224C | 2023-09-19 | Yes |
| 224-515 | DEERFIELD | 6534 | 2005-03-18 | Yes |
| 224-516 | LAKEFOREST | 6529 | 2015-01-08 | Yes |
| 224-517 | BARRINGTON | 6529 | 2015-02-20 | Yes |
| 224-518 | ARLIGTNHTS | 6529 | 2015-01-21 | Yes |
| 224-519 | DESPLAINES | 6333 | 2023-09-27 | Yes |
| 224-520 | ROSELLE | 6534 | 2002-01-17 | Yes |
| 224-521 | GLENVIEW | 9329 | 2002-07-29 | Yes |
| 224-522 | NORTHBROOK | 6529 | 2002-10-18 | — |
| 224-523 | ELGIN | 6529 | 2008-10-06 | Yes |
| 224-524 | ROSELLE | 224C | 2023-10-03 | Yes |
| 224-525 | NORTHBROOK | 6534 | 2023-10-13 | Yes |
| 224-526 | ARLIGTNHTS | 516J | 2020-09-23 | Yes |
| 224-527 | ELK GROVE | 6534 | 2023-10-18 | Yes |
| 224-528 | ROSELLE | 460K | 2023-10-18 | Yes |
| 224-529 | GLENVIEW | 6529 | 2017-03-20 | Yes |
| 224-530 | PLATO CTR | 318J | 2015-03-24 | Yes |
| 224-531 | DESPLAINES | 6333 | 2009-04-06 | Yes |
| 224-532 | WHEELING | 6534 | 2007-09-28 | Yes |
| 224-533 | DEERFIELD | 460K | 2006-04-11 | Yes |
| 224-534 | SKOKIE | 829J | 2007-06-18 | Yes |
| 224-535 | ELGIN | 318J | 2005-02-24 | Yes |
| 224-536 | SKOKIE | 516J | 2022-01-13 | Yes |
| 224-537 | DESPLAINES | 6529 | 2024-01-05 | Yes |
| 224-538 | WAUKEGAN | 6529 | 2005-03-28 | Yes |
| 224-539 | PALATINE | 7136 | 2016-05-02 | Yes |
| 224-540 | ROUND LAKE | 6529 | 2015-10-23 | Yes |
| 224-541 | GRAYSLAKE | 9329 | 2011-10-24 | Yes |
| 224-542 | WHEELING | 9329 | 2008-05-13 | Yes |
| 224-543 | HALF DAY | 6115 | 2005-03-11 | Yes |
| 224-544 | LAKEFOREST | 9329 | 2007-03-28 | Yes |
| 224-545 | NORTHBROOK | 6333 | 2007-11-08 | Yes |
| 224-546 | PALATINE | 516J | 2022-01-13 | Yes |
| 224-547 | EVANSTON | 939H | 2024-01-05 | Yes |
| 224-548 | NORTHBROOK | 6529 | 2007-09-29 | Yes |
| 224-549 | DUNDEE | 939H | 2024-01-05 | Yes |
| 224-550 | ELK GROVE | 6529 | — | Yes |
| 224-551 | DEERFIELD | 6534 | 2016-08-26 | Yes |
| 224-552 | LAKEFOREST | 9329 | 2006-09-12 | Yes |
| 224-553 | ELK GROVE | 939H | 2024-01-05 | Yes |
| 224-554 | DEERFIELD | 7136 | 2006-05-19 | Yes |
| 224-555 | DIR ASST | MULT | — | — |
| 224-556 | ALGONQUIN | 6534 | 2024-01-08 | Yes |
| 224-557 | PALATINE | 939H | 2024-01-09 | Yes |
| 224-558 | ARLIGTNHTS | 6529 | 2002-06-05 | Yes |
| 224-559 | NORTHBROOK | 6534 | 2024-01-10 | 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 |
| 224-563 | DESPLAINES | 6333 | 2008-02-07 | Yes |
| 224-564 | ELK GROVE | 7136 | 2023-06-29 | Yes |
| 224-565 | NORTHBROOK | 6529 | 2007-08-21 | Yes |
| 224-566 | ALGONQUIN | 965H | 2020-09-18 | Yes |
| 224-567 | DESPLAINES | 6333 | 2006-04-19 | Yes |
| 224-568 | HALF DAY | 7229 | — | Yes |
| 224-569 | HUNTLEY | 9329 | 2002-02-20 | Yes |
| 224-570 | WAUKEGAN | 073H | 2016-12-13 | Yes |
| 224-571 | NORTHBROOK | 6333 | 2015-09-16 | Yes |
| 224-572 | WAUKEGAN | 9329 | 2008-08-21 | Yes |
| 224-573 | ELGIN | 224C | 2024-01-24 | Yes |
| 224-574 | SKOKIE | 224C | 2024-01-24 | Yes |
| 224-575 | ELGIN | 6333 | 2016-10-17 | Yes |
| 224-576 | WAUKEGAN | 224C | 2024-01-24 | Yes |
| 224-577 | ROUND LAKE | 6529 | 2002-01-17 | Yes |
| 224-578 | PALATINE | 6529 | 2001-11-13 | Yes |
| 224-579 | HUNTLEY | 224C | 2024-02-01 | Yes |
| 224-580 | DESPLAINES | 6333 | 2016-10-17 | 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 |
| 224-585 | PARK RIDGE | 6115 | 2005-12-29 | Yes |
| 224-586 | NORTHBROOK | 6534 | 2024-02-05 | Yes |
| 224-587 | ARLIGTNHTS | 6529 | 2006-11-29 | Yes |
| 224-588 | WHEELING | 5562 | 2002-02-21 | Yes |
| 224-589 | DEERFIELD | 224C | 2024-02-20 | Yes |
| 224-590 | HIGHLANDPK | 224C | 2024-02-20 | Yes |
| 224-591 | BENSENVL | 6529 | 2024-03-07 | Yes |
| 224-592 | SKOKIE | 9329 | 2009-01-06 | Yes |
| 224-593 | GLENVIEW | 224C | 2024-03-07 | Yes |
| 224-594 | BARRINGTON | 224C | 2024-03-07 | Yes |
| 224-595 | ARLIGTNHTS | 6529 | 2002-07-15 | — |
| 224-596 | MUNDELEIN | 224C | 2024-03-07 | Yes |
| 224-597 | LAKEZURICH | 224C | 2024-03-11 | Yes |
| 224-598 | DESPLAINES | 624H | 2024-03-12 | Yes |
| 224-599 | BARRINGTON | 965H | 2020-07-10 | 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.