Area Code 406-689 located in WISDOM, BEAVERHEAD, MT, more detail is as below. Place NPA (Numbering Plan Area) : 406 NXX (Local Number Prefix) : 689 City : WISDOM County : BEAVERHEAD State : MT (Montana) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 30001 LATA (Local Access Transport Area) : 648 Rate Center : WISDOM ZIP Code Count : 265 ZIP Code Frequency : 97 ZIP Code : 59761 Other Information NPANXX : 406689 Switch CLLI (Common Language Location Identifier) : WSDMMTXCDS0 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : SOUTHERN MONTANA TELEPHONE CO. OCN (Operating Company Number) : 2254 Coverage Area Name : WISDOM Latitude : 45.6170 Longitude : -113.4471 ‹ previous : 406-689 next › : 406-690 Telephone Number List 406-689-0000 ~ 406-689-9999