All assignees
647 prefixes in 928 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 928-913 | FLAGSTAFF | 9636 | — | — |
| 928-916 | QUARTZSITE | 6572 | — | Yes |
| 928-918 | HARQUHLVLY | 630E | 2020-06-02 | Yes |
| 928-919 | YUMA | 6572 | — | Yes |
| 928-920 | YUMA | 6572 | — | — |
| 928-922 | TUBA CITY | 890G | 2026-08-14 | Yes |
| 928-923 | EHRENBERG | 4419 | — | Yes |
| 928-925 | PRESCOTT | 6572 | — | — |
| 928-927 | QUARTZSITE | 2174 | — | Yes |
| 928-928 | SOMERTON | 630E | 2022-09-26 | Yes |
| 928-929 | GILA BEND | 410H | 2017-03-03 | Yes |
| 928-933 | PINETOP | 965H | 2021-11-09 | Yes |
| 928-938 | HYDER | 630E | 2020-06-02 | Yes |
| 928-940 | PINETOP | 6572 | 2009-10-06 | Yes |
| 928-941 | YUMA | 6529 | — | Yes |
| 928-944 | AZ VILLAGE | 965H | 2020-10-02 | Yes |
| 928-946 | SAFFORD | 965H | 2020-10-02 | Yes |
| 928-950 | — | — | ||
| 928-951 | PAYSON | 6572 | — | Yes |
| 928-955 | YUMA | 793K | 2015-11-17 | Yes |
| 928-958 | — | — | ||
| 928-959 | — | — | ||
| 928-961 | GLOBE | 6572 | — | Yes |
| 928-962 | FLAGSTAFF | 630E | — | — |
| 928-963 | SEDONA | 6572 | — | Yes |
| 928-965 | SAFFORD | 6572 | 2001-12-18 | — |
| 928-966 | SAN CARLOS | 965H | 2020-10-02 | Yes |
| 928-968 | PRESCOTT | 630E | 2020-11-09 | Yes |
| 928-970 | PAYSON | 6572 | — | Yes |
| 928-975 | YUMA | 495J | 2021-03-15 | Yes |
| 928-976 | — | — | ||
| 928-977 | YUMA | 965H | 2020-06-02 | Yes |
| 928-978 | PAYSON | 6572 | — | — |
| 928-981 | FLAGSTAFF | 630E | 2020-12-08 | Yes |
| 928-985 | SAFFORD | 587F | 2015-01-23 | Yes |
| 928-988 | YUMA | 3285 | — | Yes |
| 928-989 | SAFFORD | 7217 | 2025-03-10 | Yes |
| 928-990 | SAFFORD | 7217 | 2025-03-10 | Yes |
| 928-991 | SAFFORD | 7217 | 2025-03-10 | Yes |
| 928-992 | SAFFORD | 7217 | 2025-03-10 | Yes |
| 928-993 | SAFFORD | 7217 | 2025-03-10 | Yes |
| 928-994 | SAFFORD | 7217 | 2025-03-04 | Yes |
| 928-995 | SAFFORD | 7217 | 2025-03-04 | Yes |
| 928-996 | SAFFORD | 7217 | 2025-03-04 | Yes |
| 928-997 | SAFFORD | 7217 | 2025-03-04 | Yes |
| 928-998 | SAFFORD | 7217 | 2025-03-04 | Yes |
| 928-999 | MILLSITE | 2226 | 2002-04-02 | — |
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.