All assignees
525 prefixes in 435 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 435-901 | PARK CITY | 6010 | — | Yes |
| 435-911 | XXXXXXXXXX | MULT | — | — |
| 435-915 | LOGAN | 871E | — | Yes |
| 435-919 | BRIGHAM CY | 871E | — | Yes |
| 435-921 | BRIGHAM CY | 7530 | — | Yes |
| 435-922 | ST GEORGE | 117F | 2015-11-17 | Yes |
| 435-923 | THATCHER | 871E | 2018-10-19 | Yes |
| 435-928 | — | — | ||
| 435-932 | LOGAN | 318J | — | Yes |
| 435-938 | LOGAN | 3231 | — | Yes |
| 435-940 | PARK CITY | 9636 | — | Yes |
| 435-946 | GARDENCITY | 3032 | — | — |
| 435-948 | GARDENCITY | 013B | — | — |
| 435-950 | — | — | ||
| 435-958 | — | — | ||
| 435-959 | — | — | ||
| 435-962 | PARK CITY | 6529 | — | Yes |
| 435-970 | — | — | ||
| 435-976 | — | — | ||
| 435-979 | RICHFIELD | 6010 | — | — |
| 435-986 | ST GEORGE | 9636 | — | — |
| 435-988 | — | — | ||
| 435-990 | BRIAN HEAD | 6571 | — | Yes |
| 435-994 | LOGAN | 6529 | — | Yes |
| 435-999 | LOGAN | 6571 | — | 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.