ILLINOIS BELL TEL CO
34 prefixes in 224 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 224-212 | LAKEFOREST | 9329 | 2003-11-12 | Yes |
| 224-232 | ARLIGTNHTS | 9329 | 2002-08-28 | Yes |
| 224-251 | SKOKIE | 9329 | 2012-04-27 | Yes |
| 224-293 | DUNDEE | 9329 | 2002-09-19 | Yes |
| 224-302 | WAUKEGAN | 9329 | 2012-07-13 | Yes |
| 224-361 | DESPLAINES | 9329 | — | Yes |
| 224-364 | EVANSTON | 9329 | 2003-06-05 | Yes |
| 224-399 | WAUKEGAN | 9329 | 2006-01-04 | Yes |
| 224-404 | ELK GROVE | 9329 | 2013-01-15 | Yes |
| 224-444 | LAKE VILLA | 9329 | — | Yes |
| 224-512 | BARRINGTON | 9329 | 2002-01-17 | Yes |
| 224-521 | GLENVIEW | 9329 | 2002-07-29 | Yes |
| 224-541 | GRAYSLAKE | 9329 | 2011-10-24 | Yes |
| 224-542 | WHEELING | 9329 | 2008-05-13 | Yes |
| 224-544 | LAKEFOREST | 9329 | 2007-03-28 | Yes |
| 224-552 | LAKEFOREST | 9329 | 2006-09-12 | Yes |
| 224-569 | HUNTLEY | 9329 | 2002-02-20 | Yes |
| 224-572 | WAUKEGAN | 9329 | 2008-08-21 | Yes |
| 224-592 | SKOKIE | 9329 | 2009-01-06 | Yes |
| 224-601 | SKOKIE | 9329 | 2012-09-06 | Yes |
| 224-625 | ARLIGTNHTS | 9329 | 2002-02-25 | Yes |
| 224-632 | DEERFIELD | 9329 | 2002-09-23 | Yes |
| 224-643 | LAKE VILLA | 9329 | 2002-06-27 | Yes |
| 224-653 | ROSELLE | 9329 | 2002-05-20 | Yes |
| 224-654 | HUNTLEY | 9329 | 2006-05-30 | Yes |
| 224-665 | WAUKEGAN | 9329 | 2014-05-08 | Yes |
| 224-667 | WAUKEGAN | 9329 | 2013-12-31 | Yes |
| 224-668 | WAUKEGAN | 9329 | 2013-12-31 | Yes |
| 224-698 | ROSELLE | 9329 | 2002-09-24 | Yes |
| 224-765 | HIGHLANDPK | 9329 | — | Yes |
| 224-772 | WAUKEGAN | 9329 | 2002-09-23 | Yes |
| 224-783 | ELGIN | 9329 | 2009-04-28 | Yes |
| 224-836 | PALATINE | 9329 | 2002-02-26 | Yes |
| 224-880 | LAKEFOREST | 9329 | 2011-05-23 | 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.