Phone numbers in Hayfield, Minnesota
Hayfield has 4 phone prefixes in area code 507.
Biggest holders: Level 3 (Lumen), Frontier, Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 25%
- Local phone company 25%
- Internet / business phone carrier 50%
Every prefix in Hayfield
Search the first six digits of a number in this list. If it's here, the number started in Hayfield with the carrier shown. If it isn't, check the Minnesota page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 507-307 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 507-477 | Frontier | Local phone company | – |
| 507-671 | Onvoy | Internet / business phone carrier | 2002 |
| 507-904 | Boost / Virgin Mobile | 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.