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43 prefixes in 435 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 435-218 | ST GEORGE | 871E | 2013-05-16 | Yes |
| 435-238 | CEDAR CITY | 871E | — | Yes |
| 435-244 | TOOELE | 871E | 2018-09-28 | Yes |
| 435-246 | BRIGHAM CY | 871E | — | Yes |
| 435-254 | PORTAGE | 871E | 2018-10-19 | Yes |
| 435-256 | ST GEORGE | 871E | — | Yes |
| 435-264 | NAT BRIDGE | 871E | 2019-01-23 | Yes |
| 435-266 | LYNNDYL | 871E | 2018-10-19 | Yes |
| 435-269 | BLUFF | 871E | 2019-01-23 | Yes |
| 435-274 | TOOELE | 871E | 2021-01-12 | Yes |
| 435-280 | MEXICANHAT | 871E | 2019-01-23 | Yes |
| 435-284 | KANOSH | 871E | 2019-01-23 | Yes |
| 435-292 | WASATCH | 871E | 2007-04-24 | Yes |
| 435-309 | GLNCNYONCY | 871E | 2021-04-26 | Yes |
| 435-324 | HEBER CITY | 871E | — | Yes |
| 435-325 | MEADOW | 871E | 2019-01-23 | Yes |
| 435-334 | FILLMORE | 871E | 2020-04-20 | Yes |
| 435-337 | LAKEPOWELL | 871E | 2019-01-23 | Yes |
| 435-344 | LA SAL | 871E | 2019-01-23 | Yes |
| 435-345 | THOMPSON | 871E | 2019-01-23 | Yes |
| 435-351 | ST GEORGE | 871E | 2023-04-11 | Yes |
| 435-359 | ST GEORGE | 871E | — | Yes |
| 435-361 | LOGAN | 871E | 2024-03-18 | Yes |
| 435-368 | LOGAN | 871E | 2025-09-18 | Yes |
| 435-383 | CEDAR CITY | 871E | — | Yes |
| 435-409 | SCIPIO | 871E | 2018-10-19 | Yes |
| 435-412 | GLNCNYONCY | 871E | 2007-10-18 | Yes |
| 435-417 | NEPHI | 871E | — | — |
| 435-422 | HOWELL | 871E | 2018-10-19 | Yes |
| 435-432 | PROMONTORY | 871E | 2019-01-23 | Yes |
| 435-441 | HOLDEN | 871E | 2019-01-23 | Yes |
| 435-447 | FIELDING | 871E | 2018-10-19 | Yes |
| 435-495 | OAK CITY | 871E | 2019-01-23 | Yes |
| 435-500 | DELTA | 871E | 2019-04-25 | Yes |
| 435-518 | SALINA | 871E | — | — |
| 435-523 | ST GEORGE | 871E | 2020-11-24 | Yes |
| 435-534 | LOGAN | 871E | 2020-11-09 | Yes |
| 435-626 | SNOWVILLE | 871E | 2018-10-19 | Yes |
| 435-797 | LOGAN | 871E | — | — |
| 435-800 | PARK CITY | 871E | 2017-08-31 | Yes |
| 435-915 | LOGAN | 871E | — | Yes |
| 435-919 | BRIGHAM CY | 871E | — | Yes |
| 435-923 | THATCHER | 871E | 2018-10-19 | 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.