Phone numbers in Havre, Montana
Havre has 7 phone prefixes in area code 406.
Biggest holders: CenturyLink / Lumen, AT&T Mobility, Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 43%
- Local phone company 43%
- Phone company 14%
Every prefix in Havre
Search the first six digits of a number in this list. If it's here, the number started in Havre with the carrier shown. If it isn't, check the Montana page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 406-262 | CenturyLink / Lumen | Local phone company | – |
| 406-265 | CenturyLink / Lumen | Local phone company | – |
| 406-344 | Verizon Wireless | Mobile carrier | – |
| 406-400 | Triangle Communication System | Phone company | 2017 |
| 406-808 | CenturyLink / Lumen | Local phone company | – |
| 406-879 | AT&T Mobility | Mobile carrier | 2009 |
| 406-945 | 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.