NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

ST GEORGE prefixes in area code 435

NANPA records 53 assigned NXX blocks to rate center ST GEORGE in area code 435, 10.6% of the 501 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 12 holders hold those blocks, the largest being QWEST CORPORATION (14), T-MOBILE USA, INC. (9), NEW CINGULAR WIRELESS PCS, LLC (6). The earliest assignment on record here is 2001-08-17 and the most recent 2026-09-15. 40 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area codes 785, 843, 854, 907 – overlay codes cover the same geography, so a rate center is served by all of them.

53 assigned blocks – 10.6% of 435
12 holders of record
40 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
435-215 Lumen LEVEL 3 COMMUNICATIONS, LLC - UT – yes yes
435-216 Lumen LEVEL 3 COMMUNICATIONS, LLC - UT – yes yes
435-218 Onvoy ONVOY, LLC - UT 2013-05-16 yes yes
435-229 T-Mobile T-MOBILE USA, INC. – yes yes
435-236 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 2016-11-21 yes yes
435-251 Lumen QWEST CORPORATION 2003-04-24 yes yes
435-256 Onvoy ONVOY, LLC - UT – yes yes
435-272 Bandwidth BANDWIDTH.COM CLEC, LLC - UT – yes yes
435-275 Lumen LEVEL 3 COMMUNICATIONS, LLC - UT 2002-12-30 yes yes
435-288 AT&T NEW CINGULAR WIRELESS PCS, LLC 2022-06-29 yes yes
435-301 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT – yes yes
435-313 T-Mobile T-MOBILE USA, INC. 2001-08-17 no yes
435-319 T-Mobile T-MOBILE USA, INC. 2011-09-19 yes yes
435-351 Onvoy ONVOY, LLC - UT 2023-04-11 yes yes
435-357 AT&T NEW CINGULAR WIRELESS PCS, LLC 2023-09-06 yes yes
435-359 Onvoy ONVOY, LLC - UT – yes yes
435-360 T-Mobile T-MOBILE USA, INC. 2024-05-31 yes yes
435-366 TDS TDS BROADBAND SERVICE LLC 2025-09-12 yes yes
435-375 AT&T NEW CINGULAR WIRELESS PCS, LLC 2018-12-20 yes yes
435-377 TDS TDS BROADBAND SERVICE LLC 2026-09-15 yes no
435-414 T-Mobile T-MOBILE USA, INC. 2011-11-21 yes yes
435-429 Bandwidth BANDWIDTH.COM CLEC, LLC - UT 2015-02-02 yes yes
435-467 SOUTH CENTRAL UTAH TEL. ASSN., INC. – no yes
435-522 Lumen CENTURYLINK COMMUNICATIONS, LLC 2017-11-16 yes yes
435-523 Onvoy ONVOY, LLC - UT 2020-11-24 yes yes
435-525 T-Mobile T-MOBILE USA, INC. 2011-01-27 yes yes
435-574 Lumen QWEST CORPORATION – yes yes
435-599 FRACTEL, LLC 2021-08-12 yes yes
435-619 AT&T NEW CINGULAR WIRELESS PCS, LLC – yes yes
435-627 Lumen QWEST CORPORATION – yes yes
435-628 Lumen QWEST CORPORATION – no yes
435-632 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT – no yes
435-634 Lumen QWEST CORPORATION – no yes
435-635 Lumen QWEST CORPORATION – no yes
435-652 Lumen QWEST CORPORATION – no yes
435-656 Lumen QWEST CORPORATION – no yes
435-668 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT – no yes
435-669 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT – yes yes
435-673 Lumen QWEST CORPORATION – no yes
435-674 Lumen QWEST CORPORATION – no yes
435-680 AT&T NEW CINGULAR WIRELESS PCS, LLC – yes yes
435-688 Lumen QWEST CORPORATION – no yes
435-703 T-Mobile T-MOBILE USA, INC. – yes yes
435-705 T-Mobile T-MOBILE USA, INC. – yes yes
435-767 Lumen LEVEL 3 COMMUNICATIONS, LLC - UT 2001-10-23 yes yes
435-772 Lumen QWEST CORPORATION – yes yes
435-773 Allstream ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM – yes yes
435-817 AT&T NEW CINGULAR WIRELESS PCS, LLC 2005-09-12 yes yes
435-862 T-Mobile T-MOBILE USA, INC. 2002-10-18 yes yes
435-879 Lumen QWEST CORPORATION – yes yes
435-900 FRACTEL, LLC 2019-06-03 yes yes
435-922 Bandwidth BANDWIDTH.COM CLEC, LLC - UT 2015-11-17 yes yes
435-986 Lumen QWEST CORPORATION – no yes

The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.

Who holds the blocks

HolderBrandBlocksShare here
QWEST CORPORATION Lumen 14 26.4%
T-MOBILE USA, INC. T-Mobile 9 17%
NEW CINGULAR WIRELESS PCS, LLC AT&T 6 11.3%
ONVOY, LLC - UT Onvoy 5 9.4%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT Verizon 5 9.4%
LEVEL 3 COMMUNICATIONS, LLC - UT Lumen 4 7.5%
BANDWIDTH.COM CLEC, LLC - UT Bandwidth 3 5.7%
TDS BROADBAND SERVICE LLC TDS 2 3.8%
FRACTEL, LLC – 2 3.8%
SOUTH CENTRAL UTAH TEL. ASSN., INC. – 1 1.9%
CENTURYLINK COMMUNICATIONS, LLC Lumen 1 1.9%
ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM Allstream 1 1.9%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to ST GEORGE in area code 435?

53 blocks: 215, 216, 218, 229, 236, 251, 256, 272, 275, 288, 301, 313 and 41 more, all listed in the table above.

Which carriers have numbers in ST GEORGE?

QWEST CORPORATION (14 blocks), T-MOBILE USA, INC. (9 blocks), NEW CINGULAR WIRELESS PCS, LLC (6 blocks), ONVOY, LLC - UT (5 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT (5 blocks), LEVEL 3 COMMUNICATIONS, LLC - UT (4 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is ST GEORGE a city?

It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.

Other rate centers in 435

All 501 prefixes in 435