Area Code 406-420 located in BIGFORK, FLATHEAD, MT, more detail is as below. Place NPA (Numbering Plan Area) : 406 NXX (Local Number Prefix) : 420 City : BIGFORK County : FLATHEAD State : MT (Montana) NXX Use Type : Landline NXX Intro Version : 2/28/2006 FIPS (Federal Information Processing Standards) : 30029 LATA (Local Access Transport Area) : 648 Rate Center : BIGFORK ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 59911 Other Information NPANXX : 406420 Switch CLLI (Common Language Location Identifier) : MSSLMT69PS0 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 : BRESNAN BROADBAND OF MONTANA, LLC - MT OCN (Operating Company Number) : 008E Coverage Area Name : BIGFORK Latitude : 48.0592 Longitude : -114.0797 ‹ previous : 406-417 next › : 406-421 Telephone Number List 406-420-0000 ~ 406-420-9999