Phone numbers in Cass Lake, Minnesota
Cass Lake has 5 phone prefixes in area code 218.
Biggest holders: CenturyLink / Lumen, Tekstar Communications, Bandwidth. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 40%
- Internet / business phone carrier 40%
- Phone company 20%
Every prefix in Cass Lake
Search the first six digits of a number in this list. If it's here, the number started in Cass Lake with the carrier shown. If it isn't, check the Minnesota page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 218-335 | CenturyLink / Lumen | Local phone company | – |
| 218-339 | Tekstar Communications | Phone company | 2003 |
| 218-518 | Bandwidth | Internet / business phone carrier | 2020 |
| 218-975 | Onvoy | Internet / business phone carrier | 2007 |
| 218-987 | Paul Bunyan Rural Telephone Coop | Local phone company | 2006 |
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.