Phone numbers in Winthrop, Minnesota
Winthrop has 4 phone prefixes in area code 507.
Biggest holders: Mcc Telephony Of Minnesota, Rs Fiber Cooperative, Winthrop Tel. This is the local calling area (rate center) where those prefixes were first assigned.
- Internet / business phone carrier 75%
- Phone company 25%
Every prefix in Winthrop
Search the first six digits of a number in this list. If it's here, the number started in Winthrop with the carrier shown. If it isn't, check the Minnesota page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 507-559 | Mcc Telephony Of Minnesota | Internet / business phone carrier | 2006 |
| 507-614 | Rs Fiber Cooperative | Internet / business phone carrier | 2016 |
| 507-647 | Winthrop Tel | Phone company | – |
| 507-745 | Mcc Telephony Of Minnesota | Internet / business phone carrier | 2010 |
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.