Phone numbers in Tombstone, Arizona
Tombstone has 7 phone prefixes in area code 520.
Biggest holders: Onvoy, Verizon Wireless, Peerless Network Of Arizona. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 29%
- Local phone company 14%
- Internet / business phone carrier 57%
Every prefix in Tombstone
Search the first six digits of a number in this list. If it's here, the number started in Tombstone with the carrier shown. If it isn't, check the Arizona page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 520-210 | Onvoy | Internet / business phone carrier | 2013 |
| 520-412 | Peerless Network Of Arizona | Internet / business phone carrier | 2018 |
| 520-453 | Verizon Wireless | Mobile carrier | 2020 |
| 520-457 | CenturyLink / Lumen | Local phone company | – |
| 520-506 | Onvoy | Internet / business phone carrier | 2020 |
| 520-581 | IP Horizon | Internet / business phone carrier | 2021 |
| 520-679 | Verizon Wireless | Mobile 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.