Phone numbers in Tooele, Utah
Tooele has 30 phone prefixes in area code 435.
Biggest holders: CenturyLink / Lumen, T-Mobile (including Sprint), AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Local phone company 17%
- Internet / business phone carrier 37%
- Paging service 3%
- Phone company 10%
Every prefix in Tooele
Search the first six digits of a number in this list. If it's here, the number started in Tooele with the carrier shown. If it isn't, check the Utah page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 435-204 | Spok | Paging service | 2001 |
| 435-224 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 435-228 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 435-241 | T-Mobile (including Sprint) | Mobile carrier | – |
| 435-243 | Teleport Communications America | Internet / business phone carrier | 2010 |
| 435-244 | Onvoy | Internet / business phone carrier | 2018 |
| 435-248 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 435-249 | Comcast | Internet / business phone carrier | 2005 |
| 435-255 | MetroPCS (T-Mobile) | Mobile carrier | 2014 |
| 435-268 | Firstdigital Communications | Phone company | 2015 |
| 435-274 | Onvoy | Internet / business phone carrier | 2021 |
| 435-277 | CenturyLink / Lumen | Local phone company | 2006 |
| 435-338 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 435-354 | AT&T Mobility | Mobile carrier | 2023 |
| 435-496 | T-Mobile (including Sprint) | Mobile carrier | – |
| 435-566 | Firstdigital Telecom | Phone company | 2002 |
| 435-578 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 435-579 | XO Utah | Phone company | – |
| 435-728 | Level 3 (Lumen) | Internet / business phone carrier | 2001 |
| 435-737 | TON80 Communications | Internet / business phone carrier | 2022 |
| 435-775 | Allstream | Internet / business phone carrier | – |
| 435-830 | AT&T Mobility | Mobile carrier | – |
| 435-833 | CenturyLink / Lumen | Local phone company | – |
| 435-840 | Verizon Wireless | Mobile carrier | – |
| 435-841 | Verizon Wireless | Mobile carrier | – |
| 435-843 | CenturyLink / Lumen | Local phone company | – |
| 435-849 | AT&T Mobility | Mobile carrier | – |
| 435-850 | T-Mobile (including Sprint) | Mobile carrier | – |
| 435-882 | CenturyLink / Lumen | Local phone company | – |
| 435-884 | CenturyLink / Lumen | Local phone company | – |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.