Phone numbers in Warren, Minnesota
Warren has 4 phone prefixes in area code 218.
Biggest holders: AT&T Mobility, Onvoy, Frontier. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 50%
- Local phone company 25%
- Internet / business phone carrier 25%
Every prefix in Warren
Search the first six digits of a number in this list. If it's here, the number started in Warren with the carrier shown. If it isn't, check the Minnesota page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 218-201 | AT&T Mobility | Mobile carrier | – |
| 218-400 | AT&T Mobility | Mobile carrier | 2010 |
| 218-712 | Onvoy | Internet / business phone carrier | 2020 |
| 218-745 | Frontier | 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.