All assignees
647 prefixes in 928 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 928-755 | GANADO | 4449 | — | Yes |
| 928-756 | PRESCOTT | 7175 | — | Yes |
| 928-757 | KINGMAN | 2172 | — | — |
| 928-758 | BULLHEADCY | 2172 | — | — |
| 928-759 | PRESCOTT | 9636 | — | — |
| 928-763 | BULLHEADCY | 2172 | — | — |
| 928-764 | CASTLEROCK | 2172 | — | Yes |
| 928-765 | WIKIEUP | 2172 | — | Yes |
| 928-766 | YUCCA | 2172 | — | Yes |
| 928-767 | LKMHVRNCHS | 2172 | — | Yes |
| 928-768 | MOHAVE VLY | 2172 | — | — |
| 928-769 | PEACH SPG | 2172 | — | Yes |
| 928-770 | MOHAVE VLY | 612K | — | Yes |
| 928-771 | PRESCOTT | 9636 | — | — |
| 928-772 | PRESCOTT | 9636 | — | — |
| 928-773 | FLAGSTAFF | 9636 | — | — |
| 928-774 | FLAGSTAFF | 9636 | — | — |
| 928-775 | PRESCOTT | 9636 | — | — |
| 928-776 | PRESCOTT | 9636 | — | — |
| 928-777 | PRESCOTT | 9636 | — | — |
| 928-778 | PRESCOTT | 9636 | — | — |
| 928-779 | FLAGSTAFF | 9636 | — | — |
| 928-781 | CHINLE | 4449 | — | Yes |
| 928-782 | YUMA | 9636 | — | — |
| 928-783 | YUMA | 9636 | — | — |
| 928-785 | YUMA | 9636 | — | Yes |
| 928-786 | HYDER | 516J | 2022-02-10 | Yes |
| 928-787 | LUKACHUKAI | 4449 | — | Yes |
| 928-788 | MOHAVE VLY | 2172 | — | Yes |
| 928-789 | FLAGSTAFF | 8293 | — | — |
| 928-792 | SAFFORD | 3285 | 2002-04-09 | Yes |
| 928-793 | GLOBE | 3285 | 2002-04-09 | Yes |
| 928-797 | TUBA CITY | 4146 | 2005-10-31 | — |
| 928-798 | YUMA | 630E | 2021-03-05 | Yes |
| 928-799 | SEDONA | 7217 | 2025-09-16 | Yes |
| 928-800 | PRESCOTT | 630E | 2017-04-25 | Yes |
| 928-801 | SEDONA | 7217 | 2025-09-12 | Yes |
| 928-802 | SEDONA | 7217 | 2025-09-12 | Yes |
| 928-803 | SEDONA | 7217 | 2025-09-12 | Yes |
| 928-804 | SEDONA | 7217 | 2025-09-12 | Yes |
| 928-805 | SEDONA | 7217 | 2025-09-12 | Yes |
| 928-806 | SEDONA | 7217 | 2025-09-12 | Yes |
| 928-807 | SEDONA | 7217 | 2025-09-12 | Yes |
| 928-808 | SEDONA | 7217 | 2025-09-12 | Yes |
| 928-809 | SEDONA | 7217 | 2025-09-12 | Yes |
| 928-810 | WINDOWROCK | 4449 | — | Yes |
| 928-811 | XXXXXXXXXX | MULT | — | — |
| 928-812 | GLOBE | 6572 | — | Yes |
| 928-813 | GLOBE | 7175 | — | Yes |
| 928-814 | FLAGSTAFF | 6010 | 2001-09-04 | Yes |
| 928-815 | WINDOWROCK | 4449 | 2011-02-03 | Yes |
| 928-817 | YUMA | 7175 | — | Yes |
| 928-819 | YUMA | 9636 | — | Yes |
| 928-821 | SEDONA | 6572 | — | Yes |
| 928-822 | FREDONIA | 965H | 2020-10-02 | Yes |
| 928-828 | BONITA | 2176 | — | — |
| 928-830 | PRESCOTT | 6572 | — | — |
| 928-832 | FLAGSTAFF | 630E | — | — |
| 928-833 | FLAGSTAFF | 630E | — | — |
| 928-836 | HEBER | 516J | 2022-02-24 | Yes |
| 928-837 | YUCCA | 516J | 2020-11-04 | Yes |
| 928-842 | PARKER | 965H | 2020-06-02 | Yes |
| 928-843 | SOMERTON | 516J | 2022-02-10 | Yes |
| 928-844 | LITTLEFLD | 965H | 2020-10-02 | Yes |
| 928-846 | LKHAVASUCY | 6010 | 2001-11-19 | Yes |
| 928-848 | PRESCOTT | 6529 | 2002-01-15 | Yes |
| 928-851 | BOUSE | 4419 | — | Yes |
| 928-852 | SEDONA | 3285 | 2002-09-17 | Yes |
| 928-853 | FLAGSTAFF | 6572 | — | — |
| 928-854 | LKHAVASUCY | 2172 | — | — |
| 928-855 | LKHAVASUCY | 2172 | — | — |
| 928-856 | FLAGSTAFF | 6572 | — | Yes |
| 928-857 | CIBOLA | 4419 | — | Yes |
| 928-858 | INCRPTCNYN | 3334 | — | — |
| 928-859 | SALOME | 2174 | — | Yes |
| 928-862 | SEDONA | 6529 | 2002-08-28 | Yes |
| 928-863 | FLAGSTAFF | 6529 | 2002-08-28 | Yes |
| 928-864 | FLAGSTAFF | 9636 | 2001-02-28 | Yes |
| 928-865 | CLIFTON | 2176 | — | — |
| 928-866 | MESQUITCRK | 965H | 2020-10-02 | Yes |
| 928-867 | KINGMAN | 939H | 2022-05-16 | Yes |
| 928-871 | WINDOWROCK | 4449 | — | — |
| 928-872 | BULLHDCYN | 516J | 2022-01-14 | Yes |
| 928-875 | COLORADOCY | 2286 | — | Yes |
| 928-876 | EHRENBERG | 516J | 2022-02-16 | Yes |
| 928-877 | PARKER DAM | 965H | 2020-06-02 | Yes |
| 928-878 | GILA BEND | 516J | 2022-01-13 | Yes |
| 928-880 | KINGMAN | 624H | 2023-12-22 | Yes |
| 928-882 | WINSLOW | 587F | 2017-05-15 | Yes |
| 928-886 | ST JOHNS | 516J | 2022-02-10 | Yes |
| 928-888 | GRANDCNYON | 630E | — | Yes |
| 928-889 | LKHAVASUCY | 630E | 2020-12-08 | Yes |
| 928-890 | FLAGSTAFF | 6572 | — | Yes |
| 928-892 | SHOW LOW | 6572 | — | Yes |
| 928-897 | KINGMAN | 6010 | 2001-11-19 | Yes |
| 928-898 | KINGMAN | 630E | 2021-03-11 | Yes |
| 928-899 | PRESCOTT | 6572 | — | — |
| 928-900 | GLOBE | 145J | 2018-08-31 | Yes |
| 928-910 | PRESCOTT | 6572 | — | Yes |
| 928-911 | XXXXXXXXXX | MULT | — | — |
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.