All assignees
647 prefixes in 928 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 928-624 | QUARTZSITE | 516J | 2022-02-16 | Yes |
| 928-625 | PARKER DAM | 516J | 2022-02-16 | Yes |
| 928-627 | SOMERTON | 9636 | — | — |
| 928-628 | KINGMAN | 630E | 2020-07-16 | Yes |
| 928-631 | MORMONLAKE | 6010 | 2022-02-09 | Yes |
| 928-632 | PRESCOTT | 9636 | — | Yes |
| 928-633 | BAGDAD | 3334 | — | — |
| 928-634 | SEDONA | 9636 | — | — |
| 928-635 | FLAGSTAFF | 9636 | — | Yes |
| 928-636 | PRESCOTT | 9636 | — | — |
| 928-637 | FLAGSTAFF | 9636 | — | Yes |
| 928-638 | GRANDCNYON | 9636 | — | Yes |
| 928-639 | SEDONA | 9636 | — | — |
| 928-640 | PAGE | 6572 | — | Yes |
| 928-641 | SEDONA | 7175 | — | Yes |
| 928-642 | PRESCOTT | 9636 | 2003-08-15 | Yes |
| 928-643 | FREDONIA | 2286 | — | Yes |
| 928-644 | COLORADOCY | 965H | 2020-10-02 | Yes |
| 928-645 | PAGE | 9636 | — | — |
| 928-646 | SEDONA | 9636 | — | Yes |
| 928-649 | SEDONA | 9636 | — | — |
| 928-651 | SAFFORD | 6572 | — | Yes |
| 928-652 | WIDE RUINS | 4449 | — | Yes |
| 928-653 | RED VALLEY | 4449 | — | Yes |
| 928-654 | GREASEWOOD | 4449 | — | Yes |
| 928-655 | SOMERTON | 6572 | 2018-06-14 | Yes |
| 928-656 | TEECNOSPOS | 4449 | — | Yes |
| 928-657 | DILKON | 4449 | — | — |
| 928-658 | DENNEHOTSO | 4449 | — | Yes |
| 928-659 | ROCK POINT | 4449 | — | Yes |
| 928-660 | PAGE | 6572 | — | Yes |
| 928-662 | PARKER DAM | 4419 | — | Yes |
| 928-663 | CHINLE | 700J | 2016-02-29 | Yes |
| 928-664 | CIBOLA | 516J | 2022-02-10 | Yes |
| 928-665 | GRANDCNYON | 516J | 2022-02-01 | Yes |
| 928-666 | FLAGSTAFF | 965H | 2019-01-25 | Yes |
| 928-667 | PARKER DAM | 4419 | — | Yes |
| 928-668 | WICKENBURG | 9636 | — | Yes |
| 928-669 | PARKER | 4419 | — | — |
| 928-671 | WICKENBURG | 6572 | — | Yes |
| 928-672 | SHONTO | 4449 | — | Yes |
| 928-673 | KAIBITO | 4449 | — | Yes |
| 928-674 | CHINLE | 4449 | — | — |
| 928-675 | PINONCTNWD | 4146 | 2006-03-28 | — |
| 928-677 | BLACK MESA | 4449 | — | — |
| 928-679 | FLAGSTAFF | 9636 | — | Yes |
| 928-680 | LKHAVASUCY | 2172 | — | — |
| 928-681 | KINGMAN | 2172 | — | Yes |
| 928-683 | GILA BEND | 9636 | — | Yes |
| 928-684 | WICKENBURG | 9636 | — | — |
| 928-685 | AGUILA | 3334 | — | — |
| 928-686 | LEUPP | 4449 | — | Yes |
| 928-687 | YORKVALLEY | 2176 | — | — |
| 928-688 | SANDERS | 3334 | — | — |
| 928-691 | PAGE | 6572 | — | Yes |
| 928-692 | KINGMAN | 2172 | — | — |
| 928-693 | PAGE | 630E | — | Yes |
| 928-697 | KAYENTA | 4449 | — | — |
| 928-698 | LE CHEE | 4449 | — | Yes |
| 928-699 | FLAGSTAFF | 6572 | — | — |
| 928-700 | — | — | ||
| 928-701 | GLOBE | 6010 | — | Yes |
| 928-704 | BULLHEADCY | 2172 | — | — |
| 928-706 | LKHAVASUCY | 6010 | — | Yes |
| 928-707 | FLAGSTAFF | 6572 | — | Yes |
| 928-708 | PRESCOTT | 9636 | — | Yes |
| 928-710 | PRESCOTT | 6529 | — | Yes |
| 928-711 | XXXXXXXXXX | MULT | — | — |
| 928-713 | PRESCOTT | 6572 | — | — |
| 928-714 | FLAGSTAFF | 9636 | — | Yes |
| 928-715 | KINGMAN | 6572 | — | — |
| 928-716 | KINGMAN | 6572 | — | — |
| 928-717 | PRESCOTT | 9636 | — | — |
| 928-718 | KINGMAN | 2172 | — | — |
| 928-719 | GLOBE | 6010 | — | Yes |
| 928-722 | SOMERTON | 9636 | 2002-08-15 | Yes |
| 928-723 | YUMA | 630E | 2013-02-13 | Yes |
| 928-724 | TSAILE | 4449 | — | Yes |
| 928-725 | PINONCTNWD | 4449 | — | Yes |
| 928-726 | YUMA | 9636 | — | — |
| 928-727 | KINGMAN | 6572 | — | — |
| 928-728 | ROUGH ROCK | 4449 | — | Yes |
| 928-729 | FTDEFIANCE | 4449 | — | — |
| 928-730 | FTDEFIANCE | 6010 | 2010-05-26 | Yes |
| 928-732 | LKHAVASUCY | 965H | 2021-10-25 | Yes |
| 928-733 | LKHAVASUCY | 612K | 2013-11-05 | Yes |
| 928-734 | KYKTSMOVLG | 815D | — | — |
| 928-735 | GREER | 4426 | — | Yes |
| 928-736 | TOYEI | 4449 | — | Yes |
| 928-737 | POLACCA | 815D | — | — |
| 928-738 | KEAMSCNYON | 815D | — | — |
| 928-739 | SHOW LOW | 4426 | — | Yes |
| 928-743 | BOUSE | 516J | 2022-02-16 | Yes |
| 928-744 | ALPINE | 965H | 2020-10-02 | Yes |
| 928-746 | HARQUHLVLY | 516J | 2022-02-10 | Yes |
| 928-750 | YUMA | 6572 | 2009-02-11 | Yes |
| 928-751 | SPRINGERVL | 4146 | 2005-12-20 | — |
| 928-752 | FLAGSTAFF | 7175 | — | — |
| 928-753 | KINGMAN | 2172 | — | — |
| 928-754 | BULLHDCYN | 2172 | — | 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.