Area Code 406-253 located in KALISPELL, FLATHEAD, MT, more detail is as below. Place NPA (Numbering Plan Area) : 406 NXX (Local Number Prefix) : 253 City : KALISPELL County : FLATHEAD State : MT (Montana) NXX Use Type : Wireless NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 30029 LATA (Local Access Transport Area) : 648 Rate Center : KALISPELL ZIP Code Count : 1 ZIP Code Frequency : 7 ZIP Code : 59903 Other Information NPANXX : 406253 Switch CLLI (Common Language Location Identifier) : KLSLMTXCCM2 MSA CBSA (Core Based Statistical Area) : Kalispell, MT MSA CBSA Code (Core Based Statistical Area) : 28060 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : NEW CINGULAR WIRELESS PCS, LLC OCN (Operating Company Number) : 6010 Coverage Area Name : KALISPELL Latitude : 48.1990 Longitude : -114.3151 ‹ previous : 406-253 next › : 406-253 Telephone Number List 406-253-0000 ~ 406-253-9999