ILLINOIS BELL TEL CO
258 prefixes in 630 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 630-850 | HINSDALE | 9329 | — | Yes |
| 630-851 | AURORA | 9329 | — | — |
| 630-852 | DOWNERSGRV | 9329 | — | — |
| 630-856 | HINSDALE | 9329 | — | — |
| 630-857 | NAPERVILLE | 9329 | — | Yes |
| 630-858 | GLEN ELLYN | 9329 | — | — |
| 630-859 | AURORA | 9329 | — | — |
| 630-860 | BENSENVL | 9329 | — | — |
| 630-862 | AURORA | 9329 | 2002-05-20 | Yes |
| 630-871 | WHEATON | 9329 | — | — |
| 630-872 | ROSELLE | 9329 | — | Yes |
| 630-875 | ITASCA | 9329 | — | — |
| 630-876 | W CHICAGO | 9329 | — | — |
| 630-879 | BATAVIA | 9329 | — | — |
| 630-887 | HINSDALE | 9329 | — | — |
| 630-889 | LOMBARD | 9329 | — | — |
| 630-892 | AURORA | 9329 | — | — |
| 630-893 | ROSELLE | 9329 | — | — |
| 630-894 | ROSELLE | 9329 | — | — |
| 630-896 | AURORA | 9329 | — | — |
| 630-897 | AURORA | 9329 | — | — |
| 630-898 | AURORA | 9329 | — | — |
| 630-904 | NAPERVILLE | 9329 | — | — |
| 630-905 | ROSELLE | 9329 | — | — |
| 630-906 | AURORA | 9329 | — | — |
| 630-907 | AURORA | 9329 | — | Yes |
| 630-910 | DOWNERSGRV | 9329 | — | — |
| 630-914 | LEMONT | 9329 | 2006-06-20 | Yes |
| 630-916 | LOMBARD | 9329 | — | — |
| 630-920 | HINSDALE | 9329 | — | — |
| 630-922 | NAPERVILLE | 9329 | — | — |
| 630-924 | ROSELLE | 9329 | — | — |
| 630-928 | HINSDALE | 9329 | — | — |
| 630-932 | LOMBARD | 9329 | — | — |
| 630-933 | WHEATON | 9329 | — | — |
| 630-941 | ELMHURST | 9329 | — | — |
| 630-942 | GLEN ELLYN | 9329 | — | — |
| 630-953 | LOMBARD | 9329 | — | Yes |
| 630-954 | HINSDALE | 9329 | — | Yes |
| 630-955 | NAPERVILLE | 9329 | — | Yes |
| 630-956 | ELMHURST | 9329 | 2003-01-31 | Yes |
| 630-960 | DOWNERSGRV | 9329 | — | Yes |
| 630-961 | NAPERVILLE | 9329 | — | — |
| 630-963 | DOWNERSGRV | 9329 | — | — |
| 630-964 | DOWNERSGRV | 9329 | — | — |
| 630-966 | AURORA | 9329 | — | — |
| 630-968 | DOWNERSGRV | 9329 | — | — |
| 630-969 | DOWNERSGRV | 9329 | — | — |
| 630-971 | DOWNERSGRV | 9329 | — | — |
| 630-972 | LEMONT | 9329 | — | — |
| 630-978 | AURORA | 9329 | — | — |
| 630-979 | NAPERVILLE | 9329 | — | — |
| 630-980 | ROSELLE | 9329 | — | — |
| 630-983 | NAPERVILLE | 9329 | — | — |
| 630-985 | DOWNERSGRV | 9329 | — | — |
| 630-986 | HINSDALE | 9329 | — | — |
| 630-990 | HINSDALE | 9329 | — | — |
| 630-993 | ELMHURST | 9329 | — | — |
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.