CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL
24 prefixes in 928 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 928-263 | KINGMAN | 2172 | 2007-05-03 | Yes |
| 928-453 | LKHAVASUCY | 2172 | — | — |
| 928-505 | LKHAVASUCY | 2172 | — | — |
| 928-564 | MEADVIEW | 2172 | — | Yes |
| 928-565 | KINGMAN | 2172 | — | Yes |
| 928-680 | LKHAVASUCY | 2172 | — | — |
| 928-681 | KINGMAN | 2172 | — | Yes |
| 928-692 | KINGMAN | 2172 | — | — |
| 928-704 | BULLHEADCY | 2172 | — | — |
| 928-718 | KINGMAN | 2172 | — | — |
| 928-753 | KINGMAN | 2172 | — | — |
| 928-754 | BULLHDCYN | 2172 | — | Yes |
| 928-757 | KINGMAN | 2172 | — | — |
| 928-758 | BULLHEADCY | 2172 | — | — |
| 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 |
| 928-788 | MOHAVE VLY | 2172 | — | Yes |
| 928-854 | LKHAVASUCY | 2172 | — | — |
| 928-855 | LKHAVASUCY | 2172 | — | — |
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.