Phone numbers in Litchfield, Minnesota
Litchfield has 9 phone prefixes in area code 320.
Biggest holders: Verizon Wireless, Onvoy, Level 3 (Lumen). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Local phone company 11%
- Internet / business phone carrier 33%
- Phone company 22%
Every prefix in Litchfield
Search the first six digits of a number in this list. If it's here, the number started in Litchfield with the carrier shown. If it isn't, check the Minnesota page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 320-221 | Verizon Wireless | Mobile carrier | – |
| 320-326 | Verizon Wireless | Mobile carrier | 2003 |
| 320-373 | Onvoy | Internet / business phone carrier | 2003 |
| 320-434 | Level 3 (Lumen) | Internet / business phone carrier | 2004 |
| 320-442 | Tekstar Communications | Phone company | 2020 |
| 320-535 | Onvoy | Internet / business phone carrier | 2005 |
| 320-593 | Hutchinson Telecommunications | Phone company | – |
| 320-693 | CenturyLink / Lumen | Local phone company | – |
| 320-699 | AT&T Mobility | Mobile carrier | – |
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.