Phone numbers in Windom, Minnesota
Windom has 8 phone prefixes in area code 507.
Biggest holders: AT&T Mobility, Verizon Wireless, Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 62%
- Local phone company 12%
- Internet / business phone carrier 12%
- Phone company 12%
Every prefix in Windom
Search the first six digits of a number in this list. If it's here, the number started in Windom with the carrier shown. If it isn't, check the Minnesota page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 507-221 | AT&T Mobility | Mobile carrier | – |
| 507-303 | Verizon Wireless | Mobile carrier | 2003 |
| 507-407 | Onvoy | Internet / business phone carrier | 2003 |
| 507-783 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 507-822 | Verizon Wireless | Mobile carrier | 2002 |
| 507-830 | AT&T Mobility | Mobile carrier | – |
| 507-831 | CenturyLink / Lumen | Local phone company | – |
| 507-832 | City Of Windom | Phone company | 2005 |
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.