Phone numbers in Ortonville, Minnesota
Ortonville has 6 phone prefixes in area code 320.
Biggest holders: Verizon Wireless, Midcontinent Communications, Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Local phone company 33%
- Internet / business phone carrier 17%
- Phone company 17%
Every prefix in Ortonville
Search the first six digits of a number in this list. If it's here, the number started in Ortonville with the carrier shown. If it isn't, check the Minnesota page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 320-305 | Verizon Wireless | Mobile carrier | 2002 |
| 320-487 | Midcontinent Communications | Phone company | 2008 |
| 320-500 | Verizon Wireless | Mobile carrier | 2011 |
| 320-727 | Onvoy | Internet / business phone carrier | 2003 |
| 320-839 | CenturyLink / Lumen | Local phone company | – |
| 320-849 | Federated Telephone Cooperative | Local phone company | 2015 |
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.