Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 435 prefixes
501 of the 786 possible NXX blocks are assigned in area code 435 (63.7% of capacity), spread across 113 rate centers and 54 holders. The largest holders are CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT (63 blocks, 12.6%), QWEST CORPORATION (58 blocks, 11.6%), NEW CINGULAR WIRELESS PCS, LLC (55 blocks, 11.0%). Grouped by brand, Lumen accounts for 82 blocks; brand-attributable holders cover 72% of the code, and the rest are CLECs, VoIP wholesalers and regional carriers that trade under their own names. The assignment records here run from 2001-02-02 to 2026-09-15, with 26 blocks handed out in 2021 alone. 322 blocks (64%) are in thousands-block pooling, meaning the block is shared between carriers in 1,000-number lots rather than held whole – which is why a single NXX can serve several carriers at once. 8 assigned blocks (367, 370, 371, 376, 377, 407…) are not yet in service: assigned to a carrier but not open for calls, so a caller ID from one is spoofed. 60 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
501 assigned blocks of 786
113 rate centers
54 holders of record
64% in thousands-block pooling
Largest holders in 435
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | Verizon | 63 | 12.6% |
| QWEST CORPORATION | Lumen | 58 | 11.6% |
| NEW CINGULAR WIRELESS PCS, LLC | AT&T | 55 | 11% |
| ONVOY, LLC - UT | Onvoy | 43 | 8.6% |
| T-MOBILE USA, INC. | T-Mobile | 41 | 8.2% |
| CITIZENS TELECOM-UTAH DBA FRONTIER COMM OF UT | Frontier | 28 | 5.6% |
| SOUTH CENTRAL UTAH TEL. ASSN., INC. | – | 24 | 4.8% |
| LEVEL 3 COMMUNICATIONS, LLC - UT | Lumen | 23 | 4.6% |
| BEEHIVE TELEPHONE COMPANY, INC. (UTAH) | – | 13 | 2.6% |
| UBTA-UBET COMMUNICATIONS, INC. DBA STRATA NETWORKS | – | 13 | 2.6% |
| UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | – | 11 | 2.2% |
| BANDWIDTH.COM CLEC, LLC - UT | Bandwidth | 10 | 2% |
Names are printed as they appear in the assignment records, which is the legal entity rather than the brand. Holding a block is not the same as serving the numbers in it: portability moves numbers between carriers and pooling splits a block between several.
Rate centers with their own page
Rate centers where at least three blocks are assigned, excluding the numbered metro zone codes. The remainder are in the full table below.
ST GEORGE 53LOGAN 45PARK CITY 32TOOELE 30BRIGHAM CY 23CEDAR CITY 22HEBER CITY 13RICHFIELD 10PRICE 9VERNAL 8NEPHI 8CASTLEDALE 8KAMAS 8MOAB 7BEAVER 7TREMONTON 5BEARRIV CY 5SALINA 5DUCHESNE 5ROOSEVELT 5MNZMCRANTH 4BRIAN HEAD 4FILLMORE 4BLANDING 4GLNCNYONCY 4MONTICELLO 4COALVILLE 4MONROE 4MANILA 4DELTA 4MANTI 4PAROWAN 4PANGUITCH 4KANAB 4MTPLEASANT 3ENTERPRISE 3IBAPAH 3EPHRAIM 3THOMPSON 3MONUMNTVLY 3DUTCH JOHN 3HOWELL 3GARDENCITY 3
All 501 assigned blocks
One row per NXX. “Pooled” means carriers draw 1,000-number lots from the block rather than holding all 10,000, so a pooled prefix can belong to several carriers at once. “Not in service” means assigned but not yet open for calls – a caller ID from one of those is necessarily spoofed. The holder column gives the brand where the legal entity maps to one; the full legal names are in the holders table above, exactly as NANPA records them.
| Prefix | Holder of record | Rate center | Assigned | Pooled | In service |
|---|---|---|---|---|---|
| 435-200 | Allstream | PARK CITY | – | yes | yes |
| 435-201 | Verizon | RICHFIELD | – | yes | yes |
| 435-202 | UNION TELEPHONE COMPANY | LOGAN | 2004-02-12 | – | yes |
| 435-203 | AT&T | MTPLEASANT | – | yes | yes |
| 435-204 | Spok | TOOELE | 2001-02-02 | – | yes |
| 435-205 | AT&T | MNZMCRANTH | 2016-04-28 | yes | yes |
| 435-207 | Frontier | TREMONTON | – | – | yes |
| 435-209 | AT&T | MILFORD | 2004-11-30 | yes | yes |
| 435-210 | Verizon | MOAB | – | yes | yes |
| 435-212 | AT&T | HILDALE | 2004-11-30 | yes | yes |
| 435-213 | Lumen | LOGAN | – | yes | yes |
| 435-214 | Lumen | PARK CITY | – | yes | yes |
| 435-215 | Lumen | ST GEORGE | – | yes | yes |
| 435-216 | Lumen | ST GEORGE | – | yes | yes |
| 435-217 | AT&T | RANDOLPH | 2015-03-12 | yes | yes |
| 435-218 | Onvoy | ST GEORGE | 2013-05-16 | yes | yes |
| 435-219 | T-Mobile | VERNAL | 2007-07-12 | yes | yes |
| 435-220 | AT&T | MOAB | – | yes | yes |
| 435-221 | Verizon | BEAVER | – | yes | yes |
| 435-222 | Bandwidth | HEBER CITY | 2015-05-01 | yes | yes |
| 435-223 | SOUTH CENTRAL COMM -TELCOM SERVICES, LLC UT | BRIAN HEAD | 2014-02-06 | – | yes |
| 435-224 | T-Mobile | TOOELE | 2001-06-27 | yes | yes |
| 435-225 | T-Mobile | BRIGHAM CY | 2001-06-27 | yes | yes |
| 435-226 | Windstream | BRIGHAM CY | 2001-04-13 | yes | yes |
| 435-227 | Windstream | LOGAN | 2001-04-13 | yes | yes |
| 435-228 | Windstream | TOOELE | 2001-04-13 | yes | yes |
| 435-229 | T-Mobile | ST GEORGE | – | yes | yes |
| 435-230 | Verizon | BEARRIV CY | – | yes | yes |
| 435-231 | Verizon | ENTERPRISE | – | yes | yes |
| 435-232 | T-Mobile | LOGAN | – | yes | yes |
| 435-233 | AT&T | CEDAR CITY | 2001-04-27 | yes | yes |
| 435-234 | BEEHIVE TELEPHONE COMPANY, INC. (UTAH) | IBAPAH | – | – | yes |
| 435-235 | Spok | CEDAR CITY | 2001-02-07 | – | yes |
| 435-236 | Verizon | ST GEORGE | 2016-11-21 | yes | yes |
| 435-237 | T-Mobile | BRIGHAM CY | – | yes | yes |
| 435-238 | Onvoy | CEDAR CITY | – | yes | yes |
| 435-239 | T-Mobile | BRIGHAM CY | 2001-05-11 | yes | yes |
| 435-240 | COMMIO, LLC | WENDOVER | – | yes | yes |
| 435-241 | T-Mobile | TOOELE | – | yes | yes |
| 435-242 | T-Mobile | GREENRIVER | – | yes | yes |
| 435-243 | AT&T | TOOELE | 2010-05-28 | yes | yes |
| 435-244 | Onvoy | TOOELE | 2018-09-28 | yes | yes |
| 435-245 | Lumen | LOGAN | – | yes | yes |
| 435-246 | Onvoy | BRIGHAM CY | – | yes | yes |
| 435-247 | UBTA-UBET COMMUNICATIONS, INC. DBA STRATA NETWORKS | LAPOINT | – | – | yes |
| 435-248 | Lumen | TOOELE | 2002-08-21 | yes | yes |
| 435-249 | Comcast | TOOELE | 2005-12-20 | yes | yes |
| 435-250 | Bandwidth | NEPHI | – | yes | yes |
| 435-251 | Lumen | ST GEORGE | 2003-04-24 | yes | yes |
| 435-252 | Verizon | PARK CITY | 2003-03-11 | yes | yes |
| 435-253 | Verizon | FILLMORE | 2003-06-03 | yes | yes |
| 435-254 | Onvoy | PORTAGE | 2018-10-19 | yes | yes |
| 435-255 | T-Mobile | TOOELE | 2014-07-08 | yes | yes |
| 435-256 | Onvoy | ST GEORGE | – | yes | yes |
| 435-257 | Frontier | TREMONTON | – | – | yes |
| 435-258 | Lumen | LOGAN | – | yes | yes |
| 435-259 | Frontier | MOAB | – | – | yes |
| 435-260 | Verizon | MOAB | – | yes | yes |
| 435-261 | Bandwidth | BEAVER | – | yes | yes |
| 435-262 | Verizon | FAIRVIEW | 2003-04-24 | yes | yes |
| 435-263 | SOUTH CENTRAL COMM -TELCOM SERVICES, LLC UT | CEDAR CITY | 2009-07-06 | yes | yes |
| 435-264 | Onvoy | NAT BRIDGE | 2019-01-23 | yes | yes |
| 435-265 | T-Mobile | LOGAN | 2014-07-08 | yes | yes |
| 435-266 | Onvoy | LYNNDYL | 2018-10-19 | yes | yes |
| 435-267 | T-Mobile | CEDAR CITY | – | yes | yes |
| 435-268 | FIRSTDIGITAL COMMUNICATIONS, LLC | TOOELE | 2015-09-30 | yes | yes |
| 435-269 | Onvoy | BLUFF | 2019-01-23 | yes | yes |
| 435-270 | E. FIBER SAN JUAN, LLC | BLANDING | 2021-11-24 | yes | yes |
| 435-271 | Peerless | SALINA | 2019-03-05 | yes | yes |
| 435-272 | Bandwidth | ST GEORGE | – | yes | yes |
| 435-274 | Onvoy | TOOELE | 2021-01-12 | yes | yes |
| 435-275 | Lumen | ST GEORGE | 2002-12-30 | yes | yes |
| 435-276 | Charter | BLANDING | – | yes | yes |
| 435-277 | Lumen | TOOELE | 2006-04-14 | yes | yes |
| 435-278 | Verizon | ENTERPRISE | 2020-12-29 | yes | yes |
| 435-279 | Frontier | BEARRIV CY | – | yes | yes |
| 435-280 | Onvoy | MEXICANHAT | 2019-01-23 | yes | yes |
| 435-281 | NUSO, LLC | WASATCH | 2021-01-25 | yes | yes |
| 435-282 | T-Mobile | TREMONTON | 2006-12-20 | yes | yes |
| 435-283 | MANTI TEL. CO. | EPHRAIM | – | – | yes |
| 435-284 | Onvoy | KANOSH | 2019-01-23 | yes | yes |
| 435-285 | Frontier | THOMPSON | – | – | yes |
| 435-286 | EMERY TELEPHONE DBA EMERY TELCOM | CASTLEDALE | – | – | yes |
| 435-287 | CENTRAL TELCOM SVCS DBA CENTRACOM INTERACTIVE - NV | RICHFIELD | 2008-03-18 | yes | yes |
| 435-288 | AT&T | ST GEORGE | 2022-06-29 | yes | yes |
| 435-289 | Peerless | RICHFIELD | 2019-03-05 | yes | yes |
| 435-290 | Verizon | KAMAS | 2020-10-07 | yes | yes |
| 435-291 | AT&T | TREMONTON | 2007-08-23 | yes | yes |
| 435-292 | Onvoy | WASATCH | 2007-04-24 | yes | yes |
| 435-293 | Verizon | KAMAS | 2020-05-12 | yes | yes |
| 435-294 | T-Mobile | LOGAN | – | yes | yes |
| 435-295 | Verizon | BRIGHAM CY | 2019-05-01 | yes | yes |
| 435-296 | Peerless | GLNCNYONCY | 2019-03-06 | yes | yes |
| 435-297 | Verizon | KAMAS | 2021-04-18 | yes | yes |
| 435-298 | E. FIBER SAN JUAN, LLC | MONTICELLO | 2021-11-24 | yes | yes |
| 435-299 | Verizon | PRICE | 2011-02-09 | yes | yes |
| 435-300 | Verizon | KAMAS | – | – | yes |
| 435-301 | Verizon | ST GEORGE | – | yes | yes |
| 435-302 | Verizon | KAMAS | 2021-01-28 | yes | yes |
| 435-303 | Verizon | BEARRIV CY | 2021-01-26 | yes | yes |
| 435-304 | AT&T | RICHFIELD | – | yes | yes |
| 435-305 | AT&T | JORDANELLE | 2015-12-18 | yes | yes |
| 435-306 | AT&T | EUREKA | 2021-11-12 | yes | yes |
| 435-308 | AT&T | MONUMNTVLY | 2021-07-21 | yes | yes |
| 435-309 | Onvoy | GLNCNYONCY | 2021-04-26 | yes | yes |
| 435-310 | AT&T | BEAVER | 2002-12-30 | yes | yes |
| 435-312 | AT&T | HALCHITA | 2021-09-24 | – | yes |
| 435-313 | T-Mobile | ST GEORGE | 2001-08-17 | – | yes |
| 435-314 | T-Mobile | EPHRAIM | 2010-07-23 | yes | yes |
| 435-315 | Comcast | HEBER CITY | 2012-11-16 | yes | yes |
| 435-316 | NAVAJO COMM CO INC - UT DBA NAVAJO COMM UT | MONUMNTVLY | 2012-03-28 | yes | yes |
| 435-317 | Dish | LOGAN | 2021-12-17 | yes | yes |
| 435-318 | AT&T | IBAPAH | 2021-11-12 | yes | yes |
| 435-319 | T-Mobile | ST GEORGE | 2011-09-19 | yes | yes |
| 435-320 | AT&T | MNZMCRANTH | 2021-09-24 | – | yes |
| 435-321 | Verizon | KAMAS | 2021-10-14 | yes | yes |
| 435-322 | AT&T | DUCHESNE | 2010-10-18 | yes | yes |
| 435-323 | AT&T | PARKVALLEY | 2021-11-12 | yes | yes |
| 435-324 | Onvoy | HEBER CITY | – | yes | yes |
| 435-325 | Onvoy | MEADOW | 2019-01-23 | yes | yes |
| 435-326 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | MARYSVALE | – | – | yes |
| 435-327 | T-Mobile | CEDAR CITY | 2001-08-17 | yes | yes |
| 435-328 | T-Mobile | HEBER CITY | 2024-05-23 | yes | yes |
| 435-329 | AT&T | BOULDER | 2023-01-27 | yes | yes |
| 435-330 | AT&T | CANNONVL | 2023-01-27 | yes | yes |
| 435-331 | AT&T | DUCK CREEK | 2023-01-27 | yes | yes |
| 435-332 | AT&T | HANKSVILLE | 2023-02-01 | yes | yes |
| 435-333 | ALL WEST/UTAH, INC. | PARK CITY | 2002-01-04 | – | yes |
| 435-334 | Onvoy | FILLMORE | 2020-04-20 | yes | yes |
| 435-335 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | BOULDER | – | – | yes |
| 435-336 | ALL WEST COMMUNICATIONS - UT | COALVILLE | 2001-05-02 | – | yes |
| 435-337 | Onvoy | LAKEPOWELL | 2019-01-23 | yes | yes |
| 435-338 | Verizon | TOOELE | – | yes | yes |
| 435-339 | T-Mobile | BRIGHAM CY | 2012-08-15 | yes | yes |
| 435-340 | AT&T | EPHRAIM | – | yes | yes |
| 435-341 | Bandwidth | MONROE | 2022-01-31 | yes | yes |
| 435-342 | AT&T | DNGLNG RPE | 2023-02-01 | yes | yes |
| 435-343 | AT&T | MANILA | 2023-02-01 | yes | yes |
| 435-344 | Onvoy | LA SAL | 2019-01-23 | yes | yes |
| 435-345 | Onvoy | THOMPSON | 2019-01-23 | yes | yes |
| 435-346 | Verizon | PARK CITY | 2024-10-17 | yes | yes |
| 435-348 | FRACTEL, LLC | FILLMORE | 2021-07-01 | yes | yes |
| 435-350 | Verizon | COALVILLE | 2023-02-10 | yes | yes |
| 435-351 | Onvoy | ST GEORGE | 2023-04-11 | yes | yes |
| 435-352 | Verizon | HEBER CITY | 2021-02-01 | yes | yes |
| 435-353 | UBTA-UBET COMMUNICATIONS, INC. DBA STRATA NETWORKS | NEOLA | – | – | yes |
| 435-354 | AT&T | TOOELE | 2023-08-09 | yes | yes |
| 435-355 | EMERY TELECOMMUNICATIONS & VIDEO, INC. - UT | MOAB | 2012-03-05 | yes | yes |
| 435-356 | FRACTEL, LLC | DELTA | 2021-07-01 | yes | yes |
| 435-357 | AT&T | ST GEORGE | 2023-09-06 | yes | yes |
| 435-358 | Verizon | COALVILLE | 2023-09-21 | yes | yes |
| 435-359 | Onvoy | ST GEORGE | – | yes | yes |
| 435-360 | T-Mobile | ST GEORGE | 2024-05-31 | yes | yes |
| 435-361 | Onvoy | LOGAN | 2024-03-18 | yes | yes |
| 435-362 | E. FIBER MOAB, LLC | THOMPSON | 2025-03-03 | yes | yes |
| 435-363 | Lumen | LOGAN | – | yes | yes |
| 435-364 | MANTI TELE COMMUNICATIONS COMPANY, INC. | MANTI | 2009-02-26 | – | yes |
| 435-365 | T-Mobile | HEBER CITY | 2025-08-28 | yes | yes |
| 435-366 | TDS | ST GEORGE | 2025-09-12 | yes | yes |
| 435-367 | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | LAPOINT | 2026-09-08 | yes | no |
| 435-368 | Onvoy | LOGAN | 2025-09-18 | yes | yes |
| 435-369 | T-Mobile | BRIGHAM CY | 2025-12-03 | yes | yes |
| 435-370 | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | DUTCH JOHN | 2026-09-10 | yes | no |
| 435-371 | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | MANILA | 2026-09-10 | yes | no |
| 435-374 | T-Mobile | LOGAN | 2007-10-25 | yes | yes |
| 435-375 | AT&T | ST GEORGE | 2018-12-20 | yes | yes |
| 435-376 | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | FRUITLAND | 2026-09-08 | yes | no |
| 435-377 | TDS | ST GEORGE | 2026-09-15 | yes | no |
| 435-381 | EMERY TELEPHONE DBA EMERY TELCOM | CASTLEDALE | – | – | yes |
| 435-383 | Onvoy | CEDAR CITY | – | yes | yes |
| 435-384 | EMERY TELEPHONE DBA EMERY TELCOM | CASTLEDALE | – | – | yes |
| 435-386 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | MINERSVL | – | – | yes |
| 435-387 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | MILFORD | – | – | yes |
| 435-393 | AT&T | PAROWAN | 2006-09-08 | yes | yes |
| 435-395 | AT&T | HEBER CITY | 2018-12-17 | yes | yes |
| 435-400 | Verizon | COALVILLE | 2005-09-06 | yes | yes |
| 435-401 | AT&T | ROOSEVELT | 2008-02-25 | yes | yes |
| 435-406 | Verizon | DELTA | – | yes | yes |
| 435-407 | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | TABIONA | 2026-05-05 | yes | no |
| 435-408 | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | ALTAMONT | 2026-05-05 | yes | no |
| 435-409 | Onvoy | SCIPIO | 2018-10-19 | yes | yes |
| 435-410 | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | RANDLETT | 2026-05-05 | yes | no |
| 435-412 | Onvoy | GLNCNYONCY | 2007-10-18 | yes | yes |
| 435-414 | T-Mobile | ST GEORGE | 2011-11-21 | yes | yes |
| 435-417 | Onvoy | NEPHI | – | – | yes |
| 435-418 | Verizon | BEAVER | – | yes | yes |
| 435-419 | Verizon | MONTICELLO | – | yes | yes |
| 435-421 | Verizon | BEAVER | – | yes | yes |
| 435-422 | Onvoy | HOWELL | 2018-10-19 | yes | yes |
| 435-425 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | BICKNELL | – | – | yes |
| 435-427 | CENTRAL UTAH TEL., INC. | FAIRVIEW | – | – | yes |
| 435-429 | Bandwidth | ST GEORGE | 2015-02-02 | yes | yes |
| 435-432 | Onvoy | PROMONTORY | 2019-01-23 | yes | yes |
| 435-433 | SKYLINE TELECOM | EUREKA | – | – | yes |
| 435-436 | SKYLINE TELECOM | MORONI | – | – | yes |
| 435-438 | Lumen | BEAVER | – | yes | yes |
| 435-439 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | BERYL | – | – | yes |
| 435-441 | Onvoy | HOLDEN | 2019-01-23 | yes | yes |
| 435-444 | SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA | MNZMCRANTH | 2006-05-17 | – | yes |
| 435-445 | CENTRAL UTAH TEL., INC. | FOUNTAGREN | – | – | yes |
| 435-447 | Onvoy | FIELDING | 2018-10-19 | yes | yes |
| 435-448 | CENTRAL UTAH TEL., INC. | SCOFIELD | – | – | yes |
| 435-452 | Frontier | BEARRIV CY | – | yes | yes |
| 435-454 | UBTA-UBET COMMUNICATIONS, INC. DBA STRATA NETWORKS | ALTAMONT | – | – | yes |
| 435-456 | BEEHIVE TELEPHONE COMPANY, INC. (UTAH) | CAINEVILLE | – | – | yes |
| 435-458 | Frontier | FIELDING | – | yes | yes |
| 435-459 | Verizon | MONTICELLO | – | yes | yes |
| 435-462 | CENTRAL UTAH TEL., INC. | MTPLEASANT | – | – | yes |
| 435-463 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | CEDAR CITY | – | – | yes |
| 435-465 | Verizon | BRIGHAM CY | 2015-01-22 | yes | yes |
| 435-466 | Verizon | BEARRIV CY | 2018-04-10 | yes | yes |
| 435-467 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | ST GEORGE | – | – | yes |
| 435-469 | AT&T | MTPLEASANT | – | yes | yes |
| 435-471 | Frontier | HOWELL | – | – | yes |
| 435-472 | CARBON/EMERY TELCOM, INC. - UT | PRICE | – | – | yes |
| 435-473 | NORTH COUNTY COMMUNICATIONS CORPORATION - UT | HOWELL | – | – | yes |
| 435-477 | Lumen | PAROWAN | – | yes | yes |
| 435-485 | Verizon | BLANDING | 2011-03-22 | yes | yes |
| 435-487 | XO UTAH, INC. | PARK CITY | – | – | yes |
| 435-491 | AT&T | BICKNELL | 2004-12-10 | yes | yes |
| 435-494 | Lumen | BRIGHAM CY | 2002-11-04 | yes | yes |
| 435-495 | Onvoy | OAK CITY | 2019-01-23 | yes | yes |
| 435-496 | T-Mobile | TOOELE | – | yes | yes |
| 435-500 | Onvoy | DELTA | 2019-04-25 | yes | yes |
| 435-503 | AT&T | HEBER CITY | – | yes | yes |
| 435-512 | T-Mobile | LOGAN | – | – | yes |
| 435-513 | T-Mobile | PARK CITY | – | yes | yes |
| 435-514 | AT&T | LOGAN | – | yes | yes |
| 435-515 | Bandwidth | BRIGHAM CY | 2015-01-28 | yes | yes |
| 435-518 | Onvoy | SALINA | – | – | yes |
| 435-522 | Lumen | ST GEORGE | 2017-11-16 | yes | yes |
| 435-523 | Onvoy | ST GEORGE | 2020-11-24 | yes | yes |
| 435-525 | T-Mobile | ST GEORGE | 2011-01-27 | yes | yes |
| 435-527 | Lumen | MONROE | – | yes | yes |
| 435-528 | GUNNISON TEL. CO. | GUNNISON | – | – | yes |
| 435-529 | Lumen | SALINA | – | yes | yes |
| 435-531 | T-Mobile | CEDAR CITY | – | yes | yes |
| 435-534 | Onvoy | LOGAN | 2020-11-09 | yes | yes |
| 435-535 | Lumen | LOGAN | – | yes | yes |
| 435-538 | Allstream | BRIGHAM CY | 2001-12-05 | yes | yes |
| 435-542 | HANKSVILLE TELCOM, INC. - UT | HANKSVILLE | – | – | yes |
| 435-545 | UBTA-UBET COMMUNICATIONS, INC. DBA STRATA NETWORKS | RANDLETT | – | – | yes |
| 435-547 | TON80 COMMUNICATIONS, LLC | BRIAN HEAD | 2021-04-12 | yes | yes |
| 435-548 | UBTA-UBET COMMUNICATIONS, INC. DBA STRATA NETWORKS | FRUITLAND | – | – | yes |
| 435-549 | T-Mobile | VERNAL | 2011-07-06 | yes | yes |
| 435-553 | Lumen | BRIGHAM CY | 2002-04-24 | yes | yes |
| 435-554 | Lumen | LOGAN | – | yes | yes |
| 435-557 | Bandwidth | LOGAN | 2015-06-04 | yes | yes |
| 435-558 | AT&T | RICHFIELD | 2001-04-27 | yes | yes |
| 435-559 | AT&T | CEDAR CITY | – | yes | yes |
| 435-562 | Lumen | SALINA | 2001-10-23 | yes | yes |
| 435-563 | Lumen | LOGAN | – | – | yes |
| 435-564 | EMERY TELEPHONE DBA EMERY TELCOM | GREENRIVER | – | – | yes |
| 435-565 | Lumen | PARK CITY | 2002-09-18 | yes | yes |
| 435-566 | FIRSTDIGITAL TELECOM, LLC - UT | TOOELE | 2002-08-13 | – | yes |
| 435-567 | TON80 COMMUNICATIONS, LLC | RICHFIELD | 2022-02-24 | yes | yes |
| 435-569 | TON80 COMMUNICATIONS, LLC | MOAB | 2022-02-24 | yes | yes |
| 435-571 | Lumen | PARK CITY | 2001-10-23 | yes | yes |
| 435-572 | Lumen | CEDAR CITY | 2002-04-24 | yes | yes |
| 435-574 | Lumen | ST GEORGE | – | yes | yes |
| 435-575 | FIRSTDIGITAL TELECOM, LLC - UT | PARK CITY | 2002-03-07 | – | yes |
| 435-577 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | CIRCLEVL | – | – | yes |
| 435-578 | Verizon | TOOELE | – | – | yes |
| 435-579 | XO UTAH, INC. | TOOELE | – | yes | yes |
| 435-580 | T-Mobile | NEPHI | 2002-02-21 | yes | yes |
| 435-586 | Lumen | CEDAR CITY | – | – | yes |
| 435-587 | Frontier | MONTICELLO | – | – | yes |
| 435-590 | Verizon | CEDAR CITY | – | – | yes |
| 435-592 | Verizon | CEDAR CITY | – | yes | yes |
| 435-599 | FRACTEL, LLC | ST GEORGE | 2021-08-12 | yes | yes |
| 435-600 | FRACTEL, LLC | PAROWAN | 2021-07-01 | yes | yes |
| 435-602 | T-Mobile | PARK CITY | – | yes | yes |
| 435-603 | AT&T | LOGAN | 2009-07-20 | yes | yes |
| 435-604 | AT&T | PARK CITY | – | yes | yes |
| 435-608 | Verizon | PARK CITY | – | – | yes |
| 435-609 | Verizon | CASTLEDALE | – | yes | yes |
| 435-610 | Verizon | NEPHI | – | yes | yes |
| 435-612 | Lumen | MONROE | 2002-04-24 | yes | yes |
| 435-613 | CARBON/EMERY TELCOM, INC. - UT | PRICE | – | – | yes |
| 435-615 | Lumen | PARK CITY | – | – | yes |
| 435-616 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | PANGUITCH | – | – | yes |
| 435-618 | Verizon | PANGUITCH | – | yes | yes |
| 435-619 | AT&T | ST GEORGE | – | yes | yes |
| 435-621 | T-Mobile | VERNAL | 2004-08-12 | yes | yes |
| 435-622 | UBTA-UBET COMMUNICATIONS, INC. DBA STRATA NETWORKS | FLATTOP | – | yes | yes |
| 435-623 | Lumen | NEPHI | – | yes | yes |
| 435-624 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | ANTIMONY | – | – | yes |
| 435-625 | Lumen | BEAVER | 2001-10-23 | yes | yes |
| 435-626 | Onvoy | SNOWVILLE | 2018-10-19 | yes | yes |
| 435-627 | Lumen | ST GEORGE | – | yes | yes |
| 435-628 | Lumen | ST GEORGE | – | – | yes |
| 435-630 | Verizon | PRICE | – | yes | yes |
| 435-631 | AT&T | PARK CITY | 2001-06-07 | yes | yes |
| 435-632 | Verizon | ST GEORGE | – | – | yes |
| 435-633 | Lumen | RICHFIELD | 2002-04-24 | yes | yes |
| 435-634 | Lumen | ST GEORGE | – | – | yes |
| 435-635 | Lumen | ST GEORGE | – | – | yes |
| 435-636 | CARBON/EMERY TELCOM, INC. - UT | PRICE | – | – | yes |
| 435-637 | CARBON/EMERY TELCOM, INC. - UT | PRICE | – | – | yes |
| 435-638 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | KOOSHAREM | – | – | yes |
| 435-640 | Verizon | PARK CITY | – | – | yes |
| 435-642 | UNION TEL. CO. | CHRISTMMDW | – | – | yes |
| 435-644 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | KANAB | – | – | yes |
| 435-645 | Lumen | PARK CITY | – | – | yes |
| 435-646 | UBTA-UBET COMMUNICATIONS, INC. DBA STRATA NETWORKS | FLATTOP | – | – | yes |
| 435-647 | Lumen | PARK CITY | – | yes | yes |
| 435-648 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | ORDERVILLE | – | – | yes |
| 435-649 | Lumen | PARK CITY | – | – | yes |
| 435-650 | Verizon | PRICE | – | – | yes |
| 435-651 | NAVAJO COMM CO INC - UT DBA NAVAJO COMM UT | MNZMCRANTH | – | – | yes |
| 435-652 | Lumen | ST GEORGE | – | – | yes |
| 435-653 | EMERY TELEPHONE DBA EMERY TELCOM | CASTLEDALE | – | – | yes |
| 435-654 | Lumen | HEBER CITY | – | yes | yes |
| 435-655 | Lumen | PARK CITY | – | yes | yes |
| 435-656 | Lumen | ST GEORGE | – | – | yes |
| 435-657 | Lumen | HEBER CITY | – | yes | yes |
| 435-658 | Lumen | PARK CITY | – | – | yes |
| 435-659 | Verizon | PARK CITY | – | yes | yes |
| 435-660 | Verizon | NEPHI | – | yes | yes |
| 435-661 | BEEHIVE TELEPHONE COMPANY, INC. (UTAH) | DNGLNG RPE | – | – | yes |
| 435-662 | BEEHIVE TELEPHONE COMPANY, INC. (UTAH) | CEDAR CITY | – | – | yes |
| 435-663 | BEEHIVE TELEPHONE COMPANY, INC. (UTAH) | IBAPAH | – | – | yes |
| 435-665 | SKYLINE TELECOM | WENDOVER | – | – | yes |
| 435-666 | FRACTEL, LLC | PARK CITY | 2019-01-24 | yes | yes |
| 435-667 | FRACTEL, LLC | BRIGHAM CY | 2021-07-01 | yes | yes |
| 435-668 | Verizon | ST GEORGE | – | – | yes |
| 435-669 | Verizon | ST GEORGE | – | yes | yes |
| 435-670 | AT&T | SALINA | – | yes | yes |
| 435-671 | Verizon | HEBER CITY | – | yes | yes |
| 435-672 | Frontier | BLUFF | – | – | yes |
| 435-673 | Lumen | ST GEORGE | – | – | yes |
| 435-674 | Lumen | ST GEORGE | – | – | yes |
| 435-675 | Lumen | GLNCNYONCY | – | – | yes |
| 435-676 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | PANGUITCH | – | yes | yes |
| 435-677 | Lumen | BRIAN HEAD | – | yes | yes |
| 435-678 | Frontier | BLANDING | – | – | yes |
| 435-679 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | CANNONVL | – | – | yes |
| 435-680 | AT&T | ST GEORGE | – | yes | yes |
| 435-681 | AT&T | NEPHI | – | yes | yes |
| 435-682 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | DUCK CREEK | – | – | yes |
| 435-683 | Frontier | MEXICANHAT | – | – | yes |
| 435-684 | Frontier | LAKEPOWELL | – | – | yes |
| 435-686 | Frontier | LA SAL | – | – | yes |
| 435-687 | EMERY TELEPHONE DBA EMERY TELCOM | CASTLEDALE | – | – | yes |
| 435-688 | Lumen | ST GEORGE | – | – | yes |
| 435-689 | AT&T | KANAB | – | yes | yes |
| 435-690 | Verizon | PANGUITCH | – | yes | yes |
| 435-691 | AT&T | CEDAR CITY | – | yes | yes |
| 435-692 | Frontier | NAT BRIDGE | – | – | yes |
| 435-693 | BEEHIVE TELEPHONE COMPANY, INC. (UTAH) | PARTOUN | – | – | yes |
| 435-695 | Lumen | BRIGHAM CY | – | yes | yes |
| 435-699 | FRACTEL, LLC | PARK CITY | 2021-08-12 | yes | yes |
| 435-701 | T-Mobile | CEDAR CITY | – | yes | yes |
| 435-703 | T-Mobile | ST GEORGE | – | yes | yes |
| 435-704 | Verizon | CEDAR CITY | – | yes | yes |
| 435-705 | T-Mobile | ST GEORGE | – | yes | yes |
| 435-708 | Bandwidth | CEDAR CITY | – | yes | yes |
| 435-709 | AT&T | HEBER CITY | – | yes | yes |
| 435-710 | Lumen | PAROWAN | 2001-10-23 | yes | yes |
| 435-712 | BEEHIVE TELEPHONE COMPANY, INC. (UTAH) | KOLOB | – | – | yes |
| 435-713 | Lumen | LOGAN | – | yes | yes |
| 435-714 | T-Mobile | PARK CITY | – | yes | yes |
| 435-716 | Lumen | LOGAN | – | – | yes |
| 435-719 | Frontier | MOAB | – | – | yes |
| 435-720 | Verizon | BRIGHAM CY | – | yes | yes |
| 435-722 | UBTA-UBET COMMUNICATIONS, INC. DBA STRATA NETWORKS | ROOSEVELT | – | yes | yes |
| 435-723 | Lumen | BRIGHAM CY | – | – | yes |
| 435-724 | AT&T | ROOSEVELT | – | yes | yes |
| 435-725 | UBTA-UBET COMMUNICATIONS, INC. DBA STRATA NETWORKS | ROOSEVELT | – | – | yes |
| 435-727 | NAVAJO COMM CO INC - UT DBA NAVAJO COMM UT | MONUMNTVLY | – | – | yes |
| 435-728 | Lumen | TOOELE | 2001-10-23 | yes | yes |
| 435-729 | AT&T | PARK CITY | – | yes | yes |
| 435-730 | AT&T | BRIGHAM CY | – | yes | yes |
| 435-731 | T-Mobile | PARK CITY | – | yes | yes |
| 435-732 | FRACTEL, LLC | TREMONTON | 2021-07-16 | yes | yes |
| 435-733 | AT&T | DUCHESNE | – | yes | yes |
| 435-734 | Lumen | BRIGHAM CY | – | – | yes |
| 435-735 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | HATCH | – | – | yes |
| 435-737 | TON80 COMMUNICATIONS, LLC | TOOELE | 2022-01-27 | yes | yes |
| 435-738 | UBTA-UBET COMMUNICATIONS, INC. DBA STRATA NETWORKS | DUCHESNE | – | – | yes |
| 435-739 | NAVAJO COMM CO INC - UT DBA NAVAJO COMM UT | HALCHITA | – | – | yes |
| 435-740 | Verizon | BRIGHAM CY | – | yes | yes |
| 435-743 | Frontier | FILLMORE | – | – | yes |
| 435-744 | Lumen | BRIGHAM CY | – | yes | yes |
| 435-746 | TON80 COMMUNICATIONS, LLC | KAMAS | 2022-01-27 | yes | yes |
| 435-747 | BEEHIVE TELEPHONE COMPANY, INC. (UTAH) | GROUSE CRK | – | – | yes |
| 435-748 | EMERY TELEPHONE DBA EMERY TELCOM | CASTLEDALE | – | – | yes |
| 435-749 | Verizon | CASTLEDALE | – | yes | yes |
| 435-750 | Lumen | LOGAN | – | – | yes |
| 435-752 | Lumen | LOGAN | – | – | yes |
| 435-753 | Lumen | LOGAN | – | – | yes |
| 435-754 | Lumen | LOGAN | – | yes | yes |
| 435-755 | Lumen | LOGAN | – | – | yes |
| 435-757 | AT&T | LOGAN | – | – | yes |
| 435-758 | Frontier | SCIPIO | – | – | yes |
| 435-759 | Frontier | KANOSH | – | – | yes |
| 435-760 | Verizon | LOGAN | – | yes | yes |
| 435-764 | T-Mobile | LOGAN | – | – | yes |
| 435-766 | UNION TELEPHONE COMPANY | VERNAL | 2004-04-29 | – | yes |
| 435-767 | Lumen | ST GEORGE | 2001-10-23 | yes | yes |
| 435-768 | UNION TELEPHONE COMPANY | DUCHESNE | 2004-04-29 | – | yes |
| 435-770 | Verizon | LOGAN | – | – | yes |
| 435-771 | AT&T | MONROE | – | yes | yes |
| 435-772 | Lumen | ST GEORGE | – | yes | yes |
| 435-773 | Allstream | ST GEORGE | – | yes | yes |
| 435-774 | Allstream | LOGAN | – | yes | yes |
| 435-775 | Allstream | TOOELE | – | yes | yes |
| 435-776 | Allstream | PARK CITY | – | yes | yes |
| 435-777 | Telnyx | HEBER CITY | 2017-03-01 | yes | yes |
| 435-778 | UNION TELEPHONE COMPANY | MANILA | 2003-12-18 | – | yes |
| 435-779 | UNION TELEPHONE COMPANY | GARDENCITY | 2003-12-18 | – | yes |
| 435-781 | UBTA-UBET COMMUNICATIONS, INC. DBA STRATA NETWORKS | VERNAL | – | – | yes |
| 435-782 | ALL WEST COMMUNICATIONS - UT | JORDANELLE | – | – | yes |
| 435-783 | ALL WEST COMMUNICATIONS - UT | KAMAS | – | – | yes |
| 435-784 | UNION TEL. CO. | MANILA | – | – | yes |
| 435-785 | ALL WEST COMMUNICATIONS - UT | TIMBERLAKE | 2001-10-09 | – | yes |
| 435-786 | Lumen | LOGAN | – | – | yes |
| 435-787 | Lumen | LOGAN | – | – | yes |
| 435-788 | BEEHIVE TELEPHONE COMPANY, INC. (UTAH) | TICABOO | – | – | yes |
| 435-789 | UBTA-UBET COMMUNICATIONS, INC. DBA STRATA NETWORKS | VERNAL | – | – | yes |
| 435-790 | AT&T | VERNAL | – | – | yes |
| 435-792 | Lumen | LOGAN | – | – | yes |
| 435-793 | ALL WEST COMMUNICATIONS - UT | RANDOLPH | – | – | yes |
| 435-795 | Frontier | HOLDEN | – | – | yes |
| 435-797 | Onvoy | LOGAN | – | – | yes |
| 435-799 | Verizon | LOGAN | – | yes | yes |
| 435-800 | Onvoy | PARK CITY | 2017-08-31 | yes | yes |
| 435-813 | Verizon | MANTI | – | yes | yes |
| 435-817 | AT&T | ST GEORGE | 2005-09-12 | yes | yes |
| 435-819 | Verizon | KANAB | – | yes | yes |
| 435-820 | AT&T | PRICE | – | yes | yes |
| 435-822 | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | DUCHESNE | – | – | yes |
| 435-823 | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | ROOSEVELT | – | – | yes |
| 435-824 | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | NEOLA | 2021-09-16 | – | yes |
| 435-826 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | ESCALANTE | – | – | yes |
| 435-827 | ALBION TELEPHONE CO. DBA ATC COMMUNICATIONS | ALMO | – | – | yes |
| 435-828 | UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS | VERNAL | – | – | yes |
| 435-830 | AT&T | TOOELE | – | – | yes |
| 435-831 | SKYLINE TELECOM | DUGWAY | – | – | yes |
| 435-833 | Lumen | TOOELE | – | – | yes |
| 435-834 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | BRYCECNYON | – | – | yes |
| 435-835 | MANTI TEL. CO. | MANTI | – | – | yes |
| 435-836 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | LOA | – | – | yes |
| 435-837 | BEEHIVE TELEPHONE COMPANY, INC. (UTAH) | RUSHVALLEY | – | – | yes |
| 435-839 | BEEHIVE TELEPHONE COMPANY, INC. (UTAH) | VERNON | – | – | yes |
| 435-840 | Verizon | TOOELE | – | yes | yes |
| 435-841 | Verizon | TOOELE | – | yes | yes |
| 435-842 | Frontier | MEADOW | – | – | yes |
| 435-843 | Lumen | TOOELE | – | – | yes |
| 435-846 | Frontier | OAK CITY | – | – | yes |
| 435-848 | UBTA-UBET COMMUNICATIONS, INC. DBA STRATA NETWORKS | TABIONA | – | – | yes |
| 435-849 | AT&T | TOOELE | – | yes | yes |
| 435-850 | T-Mobile | TOOELE | – | yes | yes |
| 435-851 | Verizon | MANTI | – | yes | yes |
| 435-854 | Frontier | THATCHER | – | yes | yes |
| 435-855 | BEEHIVE TELEPHONE COMPANY, INC. (UTAH) | GARRISON | – | – | yes |
| 435-856 | Lumen | NEPHI | 2001-10-23 | yes | yes |
| 435-857 | Frontier | LYNNDYL | – | – | yes |
| 435-862 | T-Mobile | ST GEORGE | 2002-10-18 | yes | yes |
| 435-863 | Frontier | PROMONTORY | – | – | yes |
| 435-864 | Frontier | DELTA | – | yes | yes |
| 435-865 | Lumen | CEDAR CITY | – | – | yes |
| 435-866 | Frontier | PORTAGE | – | yes | yes |
| 435-867 | Lumen | CEDAR CITY | – | – | yes |
| 435-868 | Lumen | CEDAR CITY | 2002-08-22 | yes | yes |
| 435-870 | CENTRAL UTAH TEL., INC. | SOLDER SMT | – | – | yes |
| 435-871 | BEEHIVE TELEPHONE COMPANY, INC. (UTAH) | PARKVALLEY | – | – | yes |
| 435-872 | Frontier | SNOWVILLE | – | yes | yes |
| 435-874 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | HILDALE | – | yes | yes |
| 435-877 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | APPLE VLLY | – | – | yes |
| 435-878 | SOUTH CENTRAL UTAH TEL. ASSN., INC. | ENTERPRISE | – | – | yes |
| 435-879 | Lumen | ST GEORGE | – | yes | yes |
| 435-880 | UNION TELEPHONE COMPANY | DUTCH JOHN | – | – | yes |
| 435-881 | AT&T | LOGAN | – | yes | yes |
| 435-882 | Lumen | TOOELE | – | – | yes |
| 435-884 | Lumen | TOOELE | – | yes | yes |
| 435-885 | UNION TEL. CO. | DUTCH JOHN | – | – | yes |
| 435-888 | CARBON/EMERY TELCOM, INC. - UT | PRICE | – | – | yes |
| 435-889 | UNION TEL. CO. | GREENDALE | – | – | yes |
| 435-890 | Verizon | LOGAN | – | yes | yes |
| 435-893 | Lumen | RICHFIELD | – | yes | yes |
| 435-896 | Lumen | RICHFIELD | – | yes | yes |
| 435-899 | Verizon | KANAB | – | yes | yes |
| 435-900 | FRACTEL, LLC | ST GEORGE | 2019-06-03 | yes | yes |
| 435-901 | AT&T | PARK CITY | – | yes | yes |
| 435-915 | Onvoy | LOGAN | – | yes | yes |
| 435-919 | Onvoy | BRIGHAM CY | – | yes | yes |
| 435-921 | AT&T | BRIGHAM CY | – | yes | yes |
| 435-922 | Bandwidth | ST GEORGE | 2015-11-17 | yes | yes |
| 435-923 | Onvoy | THATCHER | 2018-10-19 | yes | yes |
| 435-932 | Comcast | LOGAN | – | yes | yes |
| 435-938 | Lumen | LOGAN | – | yes | yes |
| 435-940 | Lumen | PARK CITY | – | yes | yes |
| 435-946 | BEAR LAKE COMMUNICATIONS | GARDENCITY | – | – | yes |
| 435-948 | UNION TELEPHONE COMPANY | GARDENCITY | – | – | yes |
| 435-962 | T-Mobile | PARK CITY | – | yes | yes |
| 435-979 | AT&T | RICHFIELD | – | – | yes |
| 435-986 | Lumen | ST GEORGE | – | – | yes |
| 435-990 | Verizon | BRIAN HEAD | – | yes | yes |
| 435-994 | T-Mobile | LOGAN | – | yes | yes |
| 435-999 | Verizon | LOGAN | – | yes | yes |
Frequently asked
How many prefixes does area code 435 have?
501 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 5,010 thousand-number ranges across 113 rate centers.
What do the first three digits after 435 tell me?
They identify the block, which tells you the rate center it was allocated to and the carrier that received it. They do not tell you who serves the number today: portability moves numbers between carriers, and pooling splits a block between several of them.
Is a 435 prefix tied to a specific town?
To a rate center, which is billing geography rather than a town. NANPA abbreviates rate center names to ten characters and in large metros uses zone codes, so the name is a NANPA label, not a place name.
What does “pooled” mean in the 435 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 322 of 435's blocks are pooled, which is how regulators slowed down area code exhaustion – and why one prefix can belong to several carriers.
Source and limits
NANPA CO Code Assignment Records, all states, utilized codes, file updated 11/01/2026 – the rows where the record's Use field is “AS” (assigned). Unavailable codes are excluded. The records say who received a block and when, not who serves a particular number today.
More about this code: overview · carriers · spam complaints · local time