Area Code 406-827 located in THOMPSON FALLS, SANDERS, MT, more detail is as below. Place NPA (Numbering Plan Area) : 406 NXX (Local Number Prefix) : 827 City : THOMPSON FALLS County : SANDERS State : MT (Montana) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 30089 LATA (Local Access Transport Area) : 648 Rate Center : THOMPSNFLS ZIP Code Count : 1526 ZIP Code Frequency : 75 ZIP Code : 59873 Other Information NPANXX : 406827 Switch CLLI (Common Language Location Identifier) : THFLMTXCRS1 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : BLACKFOOT TELEPHONE COOPERATIVE, INC. OCN (Operating Company Number) : 2235 Coverage Area Name : THOMPSON FALLS Latitude : 47.5945 Longitude : -115.3464 ‹ previous : 406-827 next › : 406-828 Telephone Number List 406-827-0000 ~ 406-827-9999