All assignees
374 prefixes in 906 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 906-301 | MICHIGAMME | 543C | 2021-01-07 | Yes |
| 906-302 | IRON MT | 817J | — | — |
| 906-303 | CALUMET | 6695 | — | — |
| 906-304 | CARNEY | 6695 | — | — |
| 906-305 | CEDARVILLE | 6695 | — | — |
| 906-306 | PERKINS | 516C | 2023-08-29 | Yes |
| 906-307 | IRONWOOD | 817J | — | — |
| 906-308 | IRON RIVER | 817J | — | — |
| 906-309 | HERMANSVL | 543C | — | Yes |
| 906-310 | CEDARVILLE | 543C | — | Yes |
| 906-311 | XXXXXXXXXX | MULT | — | — |
| 906-312 | KEWEENAW | 817J | — | — |
| 906-314 | ESCANABA | 6692 | — | — |
| 906-315 | MARQUETTE | 817J | — | — |
| 906-316 | ENGADINE | 516C | 2023-08-29 | Yes |
| 906-317 | MENOMINEE | 817J | — | — |
| 906-318 | ESCANABA | 2964 | 2024-02-16 | Yes |
| 906-319 | HOUGHTON | 2964 | 2024-02-21 | Yes |
| 906-320 | MENOMINEE | 9759 | 2025-05-13 | Yes |
| 906-321 | NEWBERRY | 817J | — | — |
| 906-322 | KINROSS | 6534 | 2005-03-25 | — |
| 906-323 | MICHIGAMME | 9323 | — | Yes |
| 906-324 | POWERS | 817J | — | — |
| 906-325 | ROCK | 4632 | — | — |
| 906-326 | STEPHENSON | 817J | — | — |
| 906-327 | SALTSTMARI | 817J | — | — |
| 906-328 | ST IGNACE | 817J | — | — |
| 906-329 | WATERSMEET | 817J | — | — |
| 906-330 | POWERS | 516C | 2012-01-23 | Yes |
| 906-331 | KEWEENAW | 543C | — | Yes |
| 906-332 | MANISTIQUE | 543C | 2021-06-15 | Yes |
| 906-333 | MARQUETTE | 622J | 2021-09-17 | Yes |
| 906-334 | TAPIOLA | 0675 | — | — |
| 906-335 | MARQUETTE | 700J | 2026-01-08 | Yes |
| 906-336 | IRONWOOD | 6003 | 2026-01-26 | Yes |
| 906-337 | CALUMET | 9323 | — | Yes |
| 906-338 | ALSTON | 0675 | — | — |
| 906-339 | CHAMPION | 9323 | — | Yes |
| 906-340 | IRON MT | 6003 | 2026-03-05 | Yes |
| 906-341 | MANISTIQUE | 0689 | — | — |
| 906-342 | IRON MT | 6534 | 2026-03-09 | Yes |
| 906-343 | SAND RIVER | 0685 | — | — |
| 906-345 | BIG BAY | 9323 | — | Yes |
| 906-346 | GWINN | 9323 | — | Yes |
| 906-348 | SALTSTMARI | 6534 | 2026-04-22 | Yes |
| 906-349 | PICKFORD | 116F | 2013-10-02 | Yes |
| 906-351 | MARQUETTE | 478J | 2021-12-02 | Yes |
| 906-352 | MENOMINEE | 793K | 2010-11-30 | Yes |
| 906-353 | BARAGA | 0675 | — | — |
| 906-355 | WATTON | 0711 | — | — |
| 906-356 | ROCK | 9323 | — | Yes |
| 906-357 | ROCK | 4253 | 2001-07-30 | — |
| 906-358 | WATERSMEET | 9323 | — | Yes |
| 906-359 | PERKINS | 9323 | — | Yes |
| 906-360 | MARQUETTE | 6534 | — | — |
| 906-361 | MARQUETTE | 6534 | — | — |
| 906-362 | MARQUETTE | 6534 | — | — |
| 906-364 | IRONWOOD | 6534 | — | Yes |
| 906-365 | BERGLAND | 6534 | — | Yes |
| 906-366 | WATERSMEET | 6534 | — | Yes |
| 906-367 | IRON RIVER | 6534 | — | Yes |
| 906-368 | POWERS | 6534 | — | Yes |
| 906-369 | CALUMET | 6534 | — | Yes |
| 906-370 | HOUGHTON | 6534 | — | — |
| 906-371 | CHAMPION | 6534 | — | Yes |
| 906-372 | GWINN | 9323 | — | Yes |
| 906-373 | BIG BAY | 6534 | — | Yes |
| 906-374 | STEPHENSON | 6534 | — | Yes |
| 906-375 | CRYSTALFLS | 543C | — | Yes |
| 906-376 | REPUBLIC | 9323 | — | Yes |
| 906-379 | SALTSTMARI | 6120 | — | Yes |
| 906-381 | CHATHAM | 6695 | — | — |
| 906-382 | BRIMLEY | 116F | 2013-10-01 | Yes |
| 906-383 | FENCERIVER | 116F | 2013-10-02 | Yes |
| 906-384 | CORNELL | 9323 | — | Yes |
| 906-387 | MUNISING | 0713 | — | — |
| 906-388 | HULBERT | 116F | 2013-10-02 | Yes |
| 906-390 | ONTONAGON | 6534 | — | Yes |
| 906-391 | BRUCECRSNG | 6534 | — | Yes |
| 906-392 | MARENISCO | 6534 | — | Yes |
| 906-393 | WATTON | 6534 | — | Yes |
| 906-395 | BARAGA | 6534 | — | Yes |
| 906-396 | IRON MT | 6534 | — | — |
| 906-397 | CARNEY | 6534 | — | Yes |
| 906-398 | ESCANABA | 6534 | 2010-07-16 | Yes |
| 906-399 | ESCANABA | 6003 | 2004-08-23 | — |
| 906-401 | NEGAUNEE | 792K | 2007-03-14 | Yes |
| 906-403 | PARADISE | 116F | 2013-10-02 | Yes |
| 906-406 | DEER PARK | 6695 | — | — |
| 906-411 | XXXXXXXXXX | MULT | — | — |
| 906-412 | WHITE PINE | 116F | 2013-10-03 | Yes |
| 906-416 | ROCKLAND | 116F | 2013-10-02 | Yes |
| 906-420 | GLADSTONE | 6534 | 2001-04-19 | Yes |
| 906-421 | SKANDIA | 116F | 2013-10-03 | Yes |
| 906-422 | MACKINACIS | 508J | 2018-02-16 | Yes |
| 906-424 | MENOMINEE | 792K | 2005-09-19 | Yes |
| 906-428 | GLADSTONE | 9323 | — | Yes |
| 906-430 | ST IGNACE | 6534 | — | Yes |
| 906-434 | RUDYARD | 817J | 2004-12-06 | — |
| 906-435 | CHATHAM | 543C | — | 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.