TELEPORT COMMUNICATIONS AMERICA, LLC - IL
22 prefixes in 815 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 815-207 | JOLIET | 7136 | — | Yes |
| 815-221 | LOCKPORT | 7136 | — | Yes |
| 815-276 | CRYSTAL LK | 7136 | — | Yes |
| 815-277 | FRANKFORT | 7136 | — | Yes |
| 815-280 | JOLIET | 7136 | — | Yes |
| 815-523 | KANKAKEE | 7136 | — | Yes |
| 815-524 | LOCKPORT | 7136 | — | Yes |
| 815-526 | CRYSTAL LK | 7136 | — | Yes |
| 815-527 | WOODSTOCK | 7136 | — | Yes |
| 815-528 | MCHENRY | 7136 | — | Yes |
| 815-531 | JOLIET | 7136 | — | Yes |
| 815-617 | OTTAWA | 7136 | — | Yes |
| 815-640 | OTTAWA | 7136 | 2001-12-28 | Yes |
| 815-655 | COAL CITY | 7136 | 2019-02-18 | Yes |
| 815-658 | NEWARK | 7136 | 2019-08-02 | Yes |
| 815-705 | MORRIS | 7136 | 2001-12-28 | Yes |
| 815-710 | MORRIS | 7136 | 2001-01-24 | Yes |
| 815-721 | ROCKFORD | 7136 | — | Yes |
| 815-860 | ELWOOD | 7136 | 2010-03-05 | Yes |
| 815-887 | HARVARD | 7136 | 2002-05-03 | Yes |
| 815-892 | STILMANVLY | 7136 | 2019-11-21 | Yes |
| 815-995 | DE KALB | 7136 | 2009-06-10 | 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.