All assignees
525 prefixes in 435 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 435-200 | PARK CITY | 7176 | — | Yes |
| 435-201 | RICHFIELD | 6571 | — | Yes |
| 435-202 | LOGAN | 013B | 2004-02-12 | — |
| 435-203 | MTPLEASANT | 6010 | — | Yes |
| 435-204 | TOOELE | 6630 | 2001-02-02 | — |
| 435-205 | MNZMCRANTH | 6010 | 2016-04-28 | Yes |
| 435-207 | TREMONTON | 4429 | — | — |
| 435-208 | — | — | ||
| 435-209 | MILFORD | 6010 | 2004-11-30 | Yes |
| 435-210 | MOAB | 6571 | — | Yes |
| 435-211 | XXXXXXXXXX | MULT | — | — |
| 435-212 | HILDALE | 6010 | 2004-11-30 | Yes |
| 435-213 | LOGAN | 3231 | — | Yes |
| 435-214 | PARK CITY | 3231 | — | Yes |
| 435-215 | ST GEORGE | 3231 | — | Yes |
| 435-216 | ST GEORGE | 3231 | — | Yes |
| 435-217 | RANDOLPH | 6010 | 2015-03-12 | Yes |
| 435-218 | ST GEORGE | 871E | 2013-05-16 | Yes |
| 435-219 | VERNAL | 6529 | 2007-07-12 | Yes |
| 435-220 | MOAB | 6010 | — | Yes |
| 435-221 | BEAVER | 6571 | — | Yes |
| 435-222 | HEBER CITY | 117F | 2015-05-01 | Yes |
| 435-223 | BRIAN HEAD | 380F | 2014-02-06 | — |
| 435-224 | TOOELE | 6529 | 2001-06-27 | Yes |
| 435-225 | BRIGHAM CY | 6529 | 2001-06-27 | Yes |
| 435-226 | BRIGHAM CY | 829J | 2001-04-13 | Yes |
| 435-227 | LOGAN | 829J | 2001-04-13 | Yes |
| 435-228 | TOOELE | 829J | 2001-04-13 | Yes |
| 435-229 | ST GEORGE | 6529 | — | Yes |
| 435-230 | BEARRIV CY | 6571 | — | Yes |
| 435-231 | ENTERPRISE | 6571 | — | Yes |
| 435-232 | LOGAN | 6529 | — | Yes |
| 435-233 | CEDAR CITY | 6010 | 2001-04-27 | Yes |
| 435-234 | IBAPAH | 4611 | — | — |
| 435-235 | CEDAR CITY | 6630 | 2001-02-07 | — |
| 435-236 | ST GEORGE | 6571 | 2016-11-21 | Yes |
| 435-237 | BRIGHAM CY | 6529 | — | Yes |
| 435-238 | CEDAR CITY | 871E | — | Yes |
| 435-239 | BRIGHAM CY | 6529 | 2001-05-11 | Yes |
| 435-240 | WENDOVER | 939H | — | Yes |
| 435-241 | TOOELE | 6529 | — | Yes |
| 435-242 | GREENRIVER | 5562 | — | Yes |
| 435-243 | TOOELE | 7530 | 2010-05-28 | Yes |
| 435-244 | TOOELE | 871E | 2018-09-28 | Yes |
| 435-245 | LOGAN | 9636 | — | Yes |
| 435-246 | BRIGHAM CY | 871E | — | Yes |
| 435-247 | LAPOINT | 2287 | — | — |
| 435-248 | TOOELE | 3231 | 2002-08-21 | Yes |
| 435-249 | TOOELE | 318J | 2005-12-20 | Yes |
| 435-250 | NEPHI | 117F | — | Yes |
| 435-251 | ST GEORGE | 9636 | 2003-04-24 | Yes |
| 435-252 | PARK CITY | 7229 | 2003-03-11 | Yes |
| 435-253 | FILLMORE | 6571 | 2003-06-03 | Yes |
| 435-254 | PORTAGE | 871E | 2018-10-19 | Yes |
| 435-255 | TOOELE | 5562 | 2014-07-08 | Yes |
| 435-256 | ST GEORGE | 871E | — | Yes |
| 435-257 | TREMONTON | 4429 | — | — |
| 435-258 | LOGAN | 9636 | — | Yes |
| 435-259 | MOAB | 4429 | — | — |
| 435-260 | MOAB | 6571 | — | Yes |
| 435-261 | BEAVER | 117F | — | Yes |
| 435-262 | FAIRVIEW | 6571 | 2003-04-24 | Yes |
| 435-263 | CEDAR CITY | 380F | 2009-07-06 | Yes |
| 435-264 | NAT BRIDGE | 871E | 2019-01-23 | Yes |
| 435-265 | LOGAN | 5562 | 2014-07-08 | Yes |
| 435-266 | LYNNDYL | 871E | 2018-10-19 | Yes |
| 435-267 | CEDAR CITY | 6529 | — | Yes |
| 435-268 | TOOELE | 716D | 2015-09-30 | Yes |
| 435-269 | BLUFF | 871E | 2019-01-23 | Yes |
| 435-270 | BLANDING | 832J | 2021-11-24 | Yes |
| 435-271 | SALINA | 526H | 2019-03-05 | Yes |
| 435-272 | ST GEORGE | 117F | — | Yes |
| 435-274 | TOOELE | 871E | 2021-01-12 | Yes |
| 435-275 | ST GEORGE | 3231 | 2002-12-30 | Yes |
| 435-276 | BLANDING | 624H | — | Yes |
| 435-277 | TOOELE | 9636 | 2006-04-14 | Yes |
| 435-278 | ENTERPRISE | 6571 | 2020-12-29 | Yes |
| 435-279 | BEARRIV CY | 4429 | — | Yes |
| 435-280 | MEXICANHAT | 871E | 2019-01-23 | Yes |
| 435-281 | WASATCH | 478J | 2021-01-25 | Yes |
| 435-282 | TREMONTON | 6529 | 2006-12-20 | Yes |
| 435-283 | EPHRAIM | 2282 | — | — |
| 435-284 | KANOSH | 871E | 2019-01-23 | Yes |
| 435-285 | THOMPSON | 4429 | — | — |
| 435-286 | CASTLEDALE | 2278 | — | — |
| 435-287 | RICHFIELD | 791D | 2008-03-18 | Yes |
| 435-288 | ST GEORGE | 6010 | 2022-06-29 | Yes |
| 435-289 | RICHFIELD | 526H | 2019-03-05 | Yes |
| 435-290 | KAMAS | 6571 | 2020-10-07 | Yes |
| 435-291 | TREMONTON | 6010 | 2007-08-23 | Yes |
| 435-292 | WASATCH | 871E | 2007-04-24 | Yes |
| 435-293 | KAMAS | 6571 | 2020-05-12 | Yes |
| 435-294 | LOGAN | 6529 | — | Yes |
| 435-295 | BRIGHAM CY | 6571 | 2019-05-01 | Yes |
| 435-296 | GLNCNYONCY | 526H | 2019-03-06 | Yes |
| 435-297 | KAMAS | 6571 | 2021-04-18 | Yes |
| 435-298 | MONTICELLO | 832J | 2021-11-24 | Yes |
| 435-299 | PRICE | 6571 | 2011-02-09 | Yes |
| 435-300 | KAMAS | 6571 | — | — |
| 435-301 | ST GEORGE | 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.