Phone numbers in Kalispell, Montana
Kalispell has 25 phone prefixes in area code 406.
Biggest holders: Verizon Wireless, AT&T Mobility, CenturyLink / Lumen. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 60%
- Local phone company 24%
- Internet / business phone carrier 12%
- Phone company 4%
Every prefix in Kalispell
Search the first six digits of a number in this list. If it's here, the number started in Kalispell with the carrier shown. If it isn't, check the Montana page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 406-212 | AT&T Mobility | Mobile carrier | 2001 |
| 406-249 | Verizon Wireless | Mobile carrier | – |
| 406-250 | Verizon Wireless | Mobile carrier | – |
| 406-253 | AT&T Mobility | Mobile carrier | – |
| 406-257 | CenturyLink / Lumen | Local phone company | – |
| 406-260 | AT&T Mobility | Mobile carrier | – |
| 406-261 | AT&T Mobility | Mobile carrier | – |
| 406-270 | Verizon Wireless | Mobile carrier | – |
| 406-300 | Charter / Spectrum | Internet / business phone carrier | 2013 |
| 406-309 | Charter / Spectrum | Internet / business phone carrier | 2011 |
| 406-314 | AT&T Mobility | Mobile carrier | 2004 |
| 406-407 | Verizon Wireless | Mobile carrier | 2010 |
| 406-471 | Verizon Wireless | Mobile carrier | 2005 |
| 406-607 | Blackfoot Communications | Phone company | 2013 |
| 406-609 | AT&T Mobility | Mobile carrier | 2021 |
| 406-751 | CenturyLink / Lumen | Local phone company | – |
| 406-752 | CenturyLink / Lumen | Local phone company | – |
| 406-755 | CenturyLink / Lumen | Local phone company | – |
| 406-756 | CenturyLink / Lumen | Local phone company | – |
| 406-758 | CenturyLink / Lumen | Local phone company | – |
| 406-858 | Boost / Virgin Mobile | Mobile carrier | – |
| 406-871 | Verizon Wireless | Mobile carrier | 2006 |
| 406-885 | Verizon Wireless | Mobile carrier | – |
| 406-890 | Charter / Spectrum | Internet / business phone carrier | – |
| 406-955 | Verizon Wireless | Mobile carrier | 2023 |
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.