Phone numbers in Sierravist, Arizona
Sierravist has 70 phone prefixes in area code 520.
Biggest holders: MCImetro (Verizon Business), CenturyLink / Lumen, Teleport Communications America. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 23%
- Local phone company 17%
- Internet / business phone carrier 57%
- Phone company 3%
Every prefix in Sierravist
Search the first six digits of a number in this list. If it's here, the number started in Sierravist with the carrier shown. If it isn't, check the Arizona page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 520-220 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 520-224 | Allstream | Internet / business phone carrier | – |
| 520-226 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 520-227 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 520-234 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 520-236 | MetroPCS (T-Mobile) | Mobile carrier | 2002 |
| 520-249 | T-Mobile (including Sprint) | Mobile carrier | – |
| 520-255 | Verizon Wireless | Mobile carrier | 2004 |
| 520-263 | Comcast | Internet / business phone carrier | – |
| 520-266 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 520-267 | North County Communications | Phone company | – |
| 520-335 | Comcast | Internet / business phone carrier | – |
| 520-376 | MetroPCS (T-Mobile) | Mobile carrier | 2019 |
| 520-378 | CenturyLink / Lumen | Local phone company | – |
| 520-417 | CenturyLink / Lumen | Local phone company | – |
| 520-439 | CenturyLink / Lumen | Local phone company | – |
| 520-452 | CenturyLink / Lumen | Local phone company | – |
| 520-454 | CenturyLink / Lumen | Local phone company | 2009 |
| 520-456 | CenturyLink / Lumen | Local phone company | – |
| 520-458 | CenturyLink / Lumen | Local phone company | – |
| 520-459 | CenturyLink / Lumen | Local phone company | – |
| 520-473 | T-Mobile (including Sprint) | Mobile carrier | 2020 |
| 520-504 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 520-508 | Verizon Wireless | Mobile carrier | – |
| 520-515 | CenturyLink / Lumen | Local phone company | – |
| 520-523 | Onvoy | Internet / business phone carrier | 2020 |
| 520-533 | CenturyLink / Lumen | Local phone company | – |
| 520-538 | CenturyLink / Lumen | Local phone company | – |
| 520-556 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 520-559 | Verizon Wireless | Mobile carrier | – |
| 520-654 | Commio | Internet / business phone carrier | 2022 |
| 520-669 | MCImetro (Verizon Business) | Internet / business phone carrier | 2023 |
| 520-671 | MCImetro (Verizon Business) | Internet / business phone carrier | 2023 |
| 520-672 | MCImetro (Verizon Business) | Internet / business phone carrier | 2023 |
| 520-673 | MCImetro (Verizon Business) | Internet / business phone carrier | 2023 |
| 520-674 | MCImetro (Verizon Business) | Internet / business phone carrier | 2023 |
| 520-678 | Verizon Wireless | Mobile carrier | – |
| 520-684 | MCImetro (Verizon Business) | Internet / business phone carrier | 2023 |
| 520-685 | Comcast | Internet / business phone carrier | – |
| 520-687 | MCImetro (Verizon Business) | Internet / business phone carrier | 2023 |
| 520-691 | MCImetro (Verizon Business) | Internet / business phone carrier | 2023 |
| 520-692 | MCImetro (Verizon Business) | Internet / business phone carrier | 2023 |
| 520-693 | MCImetro (Verizon Business) | Internet / business phone carrier | 2023 |
| 520-699 | Fractel | Internet / business phone carrier | 2021 |
| 520-706 | MCImetro (Verizon Business) | Internet / business phone carrier | 2024 |
| 520-707 | MCImetro (Verizon Business) | Internet / business phone carrier | 2024 |
| 520-708 | MCImetro (Verizon Business) | Internet / business phone carrier | 2024 |
| 520-713 | MCImetro (Verizon Business) | Internet / business phone carrier | 2024 |
| 520-714 | MCImetro (Verizon Business) | Internet / business phone carrier | 2024 |
| 520-715 | MCImetro (Verizon Business) | Internet / business phone carrier | 2024 |
| 520-716 | MCImetro (Verizon Business) | Internet / business phone carrier | 2024 |
| 520-717 | MCImetro (Verizon Business) | Internet / business phone carrier | 2024 |
| 520-718 | MCImetro (Verizon Business) | Internet / business phone carrier | 2024 |
| 520-725 | MCImetro (Verizon Business) | Internet / business phone carrier | 2024 |
| 520-732 | Verizon Wireless | Mobile carrier | 2001 |
| 520-735 | AT&T Mobility | Mobile carrier | 2024 |
| 520-737 | Allo Communications | Phone company | 2024 |
| 520-803 | CenturyLink / Lumen | Local phone company | – |
| 520-843 | Onvoy | Internet / business phone carrier | – |
| 520-851 | Teleport Communications America | Internet / business phone carrier | 2024 |
| 520-852 | Teleport Communications America | Internet / business phone carrier | 2024 |
| 520-853 | Teleport Communications America | Internet / business phone carrier | 2024 |
| 520-854 | Teleport Communications America | Internet / business phone carrier | 2024 |
| 520-855 | Teleport Communications America | Internet / business phone carrier | 2024 |
| 520-895 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 520-941 | Teleport Communications America | Internet / business phone carrier | 2023 |
| 520-942 | Teleport Communications America | Internet / business phone carrier | 2023 |
| 520-943 | Teleport Communications America | Internet / business phone carrier | 2023 |
| 520-944 | Teleport Communications America | Internet / business phone carrier | 2023 |
| 520-945 | Teleport Communications America | Internet / business phone carrier | 2023 |
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.