All assignees
647 prefixes in 928 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 928-400 | WIKIEUP | 965H | 2021-11-22 | Yes |
| 928-401 | TUBA CITY | 4146 | 2006-08-16 | — |
| 928-402 | GLOBE | 9636 | — | Yes |
| 928-403 | PEACH SPG | 073H | 2021-02-01 | Yes |
| 928-404 | BULLHDCYN | 612K | — | Yes |
| 928-405 | FLAGSTAFF | 6010 | 2021-05-04 | Yes |
| 928-406 | WINSLOW | 6010 | 2021-05-18 | Yes |
| 928-407 | WINDOWROCK | 073H | 2021-07-15 | Yes |
| 928-408 | YUMA | 490J | 2021-12-16 | Yes |
| 928-409 | HEBER | 4146 | 2005-12-20 | — |
| 928-410 | GANADO | 6010 | 2021-07-19 | Yes |
| 928-411 | XXXXXXXXXX | MULT | — | — |
| 928-412 | LKHAVASUCY | 6010 | 2001-03-19 | Yes |
| 928-413 | PIMA | 6572 | 2021-08-11 | Yes |
| 928-414 | HOLBROOK | 6572 | — | Yes |
| 928-415 | WICKENBURG | 3285 | 2001-04-16 | Yes |
| 928-416 | MEADVIEW | 624H | 2020-12-23 | Yes |
| 928-417 | SAFFORD | 6529 | 2021-07-27 | Yes |
| 928-418 | KINGMAN | 6529 | 2021-08-24 | Yes |
| 928-419 | FLAGSTAFF | 425J | 2019-03-27 | Yes |
| 928-420 | PRESCOTT | 6529 | 2004-09-22 | Yes |
| 928-421 | WINSLOW | 587F | 2014-03-03 | Yes |
| 928-422 | SELIGMAN | 3334 | — | — |
| 928-423 | FLAGSTAFF | 3285 | 2021-08-23 | Yes |
| 928-424 | SAFFORD | 183D | 2005-12-21 | — |
| 928-425 | GLOBE | 9636 | — | — |
| 928-426 | PRESCOTT | 515J | 2021-09-03 | Yes |
| 928-427 | WICKENBURG | 9636 | — | Yes |
| 928-428 | SAFFORD | 9636 | — | — |
| 928-429 | KAYENTA | 4146 | 2006-03-28 | — |
| 928-430 | SOMERTON | 515J | 2021-09-03 | Yes |
| 928-431 | BLACK MESA | 6010 | 2021-09-23 | — |
| 928-432 | SAFFORD | 9636 | 2006-10-12 | Yes |
| 928-433 | FLAGSTAFF | 7175 | — | Yes |
| 928-434 | SHOW LOW | 4146 | 2005-03-29 | — |
| 928-435 | BULLHEADCY | 6529 | 2022-08-12 | Yes |
| 928-436 | GILA BEND | 3285 | — | Yes |
| 928-437 | GRANDCNYON | 630E | — | — |
| 928-438 | FLAGSTAFF | 630E | 2001-03-27 | Yes |
| 928-439 | DUNCAN | 3285 | 2012-02-29 | Yes |
| 928-440 | FLAGSTAFF | 612K | 2013-11-05 | Yes |
| 928-441 | PRESCOTT | 7175 | — | — |
| 928-442 | PRESCOTT | 9636 | — | Yes |
| 928-443 | PRESCOTT | 9636 | — | — |
| 928-444 | BULLHEADCY | 612K | — | Yes |
| 928-445 | PRESCOTT | 9636 | — | — |
| 928-446 | YUMA | 6529 | 2002-01-15 | Yes |
| 928-447 | FLAGSTAFF | 630E | — | — |
| 928-448 | SUPAI | 2171 | — | Yes |
| 928-449 | LKMHVRNCHS | 630E | 2020-12-23 | Yes |
| 928-450 | BULLHEADCY | 6529 | 2021-10-01 | Yes |
| 928-451 | SEDONA | 6529 | 2004-09-22 | Yes |
| 928-452 | BONITA | 6010 | 2021-09-23 | — |
| 928-453 | LKHAVASUCY | 2172 | — | — |
| 928-454 | HYDER | 2171 | — | Yes |
| 928-455 | PEACH SPG | 630E | 2019-12-02 | Yes |
| 928-456 | FLAGSTAFF | 939H | 2021-09-24 | Yes |
| 928-457 | SNOWFLAKE | 3285 | 2007-03-08 | Yes |
| 928-458 | PRESCOTT | 6529 | 2002-01-29 | Yes |
| 928-459 | YUMA | 6529 | — | Yes |
| 928-460 | PRESCOTT | 6572 | — | Yes |
| 928-461 | TUBA CITY | 478J | 2021-09-28 | Yes |
| 928-462 | YOUNG | 2226 | — | — |
| 928-463 | PRESCOTT | 5562 | 2021-10-11 | Yes |
| 928-464 | WICKENBURG | 6529 | 2022-01-07 | Yes |
| 928-465 | BULLHDCYN | 965H | 2020-09-24 | Yes |
| 928-466 | CASTLEROCK | 3285 | 2005-03-02 | Yes |
| 928-467 | ROOSEVLTLK | 2171 | — | Yes |
| 928-468 | PAYSON | 9636 | — | Yes |
| 928-469 | PARKER | 6529 | 2022-01-07 | Yes |
| 928-470 | PRESCOTT | 732J | 2023-02-13 | Yes |
| 928-471 | PAYSON | 9636 | 2017-01-18 | Yes |
| 928-472 | PAYSON | 9636 | — | Yes |
| 928-473 | GLOBE | 9636 | — | Yes |
| 928-474 | PAYSON | 9636 | — | — |
| 928-475 | SAN CARLOS | 2169 | — | — |
| 928-476 | PAYSON | 9636 | — | Yes |
| 928-477 | BLUE RIDGE | 2171 | — | Yes |
| 928-478 | PAYSON | 9636 | — | Yes |
| 928-479 | ROOSEVLTLK | 2171 | — | Yes |
| 928-481 | BLUE RIDGE | 6010 | 2022-02-09 | Yes |
| 928-482 | GILA BEND | 7552 | — | Yes |
| 928-483 | YUMA | 6572 | 2022-05-18 | Yes |
| 928-484 | PAGE | 630E | — | — |
| 928-485 | PIMA | 9636 | — | Yes |
| 928-486 | LKHAVASUCY | 6529 | 2001-04-16 | Yes |
| 928-487 | GLOBE | 9636 | 2007-06-26 | Yes |
| 928-488 | YUMA | 6529 | 2006-01-31 | Yes |
| 928-489 | KAYENTA | 4146 | 2011-10-21 | Yes |
| 928-490 | LKHAVASUCY | 6572 | 2023-03-10 | Yes |
| 928-491 | GLOBE | 587F | 2022-09-26 | Yes |
| 928-492 | PAYSON | 630E | — | — |
| 928-493 | PRESCOTT | 630E | — | — |
| 928-494 | SEDONA | 579F | 2012-06-29 | Yes |
| 928-495 | PRESCOTT | 6010 | 2022-10-21 | Yes |
| 928-496 | SEDONA | 630E | — | — |
| 928-497 | KYKTSMOVLG | 4146 | 2018-05-25 | Yes |
| 928-498 | SNOWFLAKE | 7217 | — | Yes |
| 928-499 | PRESCOTT | 7217 | — | Yes |
| 928-500 | AGUILA | 145J | 2019-02-20 | 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.