All assignees
800 prefixes in 815 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 815-300 | NEW LENOX | 9329 | 2010-12-22 | Yes |
| 815-301 | CRYSTAL LK | 6115 | — | Yes |
| 815-302 | JOLIET | 6529 | — | Yes |
| 815-303 | PRINCETON | 6333 | — | — |
| 815-304 | KANKAKEE | 6115 | — | Yes |
| 815-305 | GARDNER | 6115 | — | Yes |
| 815-306 | LOCKPORT | 6115 | — | Yes |
| 815-307 | MCHENRY | 6115 | — | Yes |
| 815-308 | WOODSTOCK | 6115 | — | Yes |
| 815-309 | SHANNON | 443F | 2006-07-18 | — |
| 815-310 | UTICA | 6115 | — | Yes |
| 815-311 | XXXXXXXXXX | MULT | — | — |
| 815-312 | ROCKFORD | 224C | 2008-12-15 | Yes |
| 815-313 | OTTAWA | 6115 | — | Yes |
| 815-314 | MANHATTAN | 6115 | — | Yes |
| 815-315 | ROCKFORD | 6115 | — | Yes |
| 815-316 | ROCKFORD | 6115 | — | — |
| 815-317 | CRESCENTCY | 6115 | — | Yes |
| 815-318 | MORRIS | 6115 | — | Yes |
| 815-319 | ROCKFORD | 6265 | — | Yes |
| 815-320 | NEW LENOX | 063E | 2009-04-28 | Yes |
| 815-321 | WOODSTOCK | 224C | — | Yes |
| 815-322 | MCHENRY | 6115 | — | Yes |
| 815-323 | BELVIDERE | 6115 | 2005-02-10 | Yes |
| 815-324 | OTTAWA | 593K | 2010-01-08 | Yes |
| 815-325 | JOLIET | 6534 | — | — |
| 815-326 | OGLESBY | 6534 | — | Yes |
| 815-327 | PLAINFIELD | 6115 | — | — |
| 815-328 | LOCKPORT | 6115 | — | Yes |
| 815-329 | ROCKFORD | 516C | 2013-03-11 | Yes |
| 815-330 | CRESCENTCY | 460K | — | — |
| 815-331 | MCHENRY | 6115 | — | Yes |
| 815-332 | CHERRY VLY | 1015 | — | Yes |
| 815-333 | WOODSTOCK | 6115 | — | Yes |
| 815-334 | WOODSTOCK | 9329 | — | Yes |
| 815-335 | WINNEBAGO | 1015 | — | Yes |
| 815-336 | COLETA | 1183 | — | Yes |
| 815-337 | WOODSTOCK | 9329 | — | — |
| 815-338 | WOODSTOCK | 9329 | — | — |
| 815-339 | GRANVILLE | 1036 | — | Yes |
| 815-340 | LA MOILLE | 318J | 2006-08-25 | Yes |
| 815-341 | JOLIET | 6534 | — | — |
| 815-342 | JOLIET | 6534 | — | — |
| 815-343 | OGLESBY | 6534 | — | — |
| 815-344 | MCHENRY | 9329 | — | — |
| 815-345 | WOODSTOCK | 6115 | — | Yes |
| 815-346 | GARDNER | 6115 | — | — |
| 815-347 | WOODSTOCK | 6333 | — | — |
| 815-348 | KANKAKEE | 829J | 2009-10-16 | Yes |
| 815-349 | MCHENRY | 7196 | — | Yes |
| 815-350 | FRANKLIGRV | 443F | — | — |
| 815-351 | KANKAKEE | 6333 | — | — |
| 815-352 | KANKAKEE | 6115 | — | Yes |
| 815-353 | WOODSTOCK | 6333 | — | — |
| 815-354 | WOODSTOCK | 6333 | — | — |
| 815-355 | WOODSTOCK | 6333 | — | — |
| 815-356 | CRYSTAL LK | 9329 | — | — |
| 815-357 | SENECA | 9329 | — | Yes |
| 815-358 | CORNELL | 1009 | — | — |
| 815-359 | HARMON | 1057 | — | Yes |
| 815-360 | SUBLETTE | 443F | — | — |
| 815-361 | MANHATTAN | 6115 | — | Yes |
| 815-362 | GERMAN VLY | 1036 | — | Yes |
| 815-363 | MCHENRY | 9329 | — | — |
| 815-364 | MORRIS | 6115 | — | Yes |
| 815-365 | REDDICK | 1015 | — | Yes |
| 815-366 | OTTAWA | 6115 | — | Yes |
| 815-367 | WINSLOW | 1036 | — | Yes |
| 815-368 | LOSTANT | 1015 | — | Yes |
| 815-369 | LENA | 1036 | — | Yes |
| 815-370 | KANKAKEE | 6333 | — | — |
| 815-371 | UTICA | 6115 | — | Yes |
| 815-372 | LOCKPORT | 9329 | — | Yes |
| 815-373 | ELWOOD | 829J | 2009-11-04 | Yes |
| 815-374 | DWIGHT | 829J | 2009-11-04 | Yes |
| 815-375 | DE KALB | 6265 | — | Yes |
| 815-376 | OHIO | 1015 | — | Yes |
| 815-377 | CRESCENTCY | 6115 | — | — |
| 815-378 | ROCKFORD | 6529 | — | Yes |
| 815-379 | WALNUT | 1015 | — | Yes |
| 815-380 | STERLING | 6115 | — | Yes |
| 815-381 | ROCKFORD | 9329 | — | — |
| 815-382 | WOODSTOCK | 6534 | — | — |
| 815-383 | CRESCENTCY | 6534 | — | — |
| 815-384 | CRESTON | 1036 | — | Yes |
| 815-385 | MCHENRY | 9329 | — | — |
| 815-386 | KANKAKEE | 6333 | — | Yes |
| 815-387 | ROCKFORD | 9329 | — | — |
| 815-388 | MCHENRY | 5562 | — | Yes |
| 815-389 | SO BELOIT | 9329 | — | — |
| 815-390 | BRAIDWOOD | 318J | 2004-10-14 | Yes |
| 815-391 | ROCKFORD | 9329 | — | Yes |
| 815-392 | KINSMAN | 1041 | — | — |
| 815-393 | MONROE CTR | 1036 | — | Yes |
| 815-394 | ROCKFORD | 9329 | — | Yes |
| 815-395 | ROCKFORD | 9329 | — | — |
| 815-396 | STEWARD | 1036 | — | Yes |
| 815-397 | ROCKFORD | 9329 | — | — |
| 815-398 | ROCKFORD | 9329 | — | — |
| 815-399 | ROCKFORD | 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.