Area Code 406-463 located in DUTTON, TETON, MT, more detail is as below. Place NPA (Numbering Plan Area) : 406 NXX (Local Number Prefix) : 463 City : DUTTON County : TETON State : MT (Montana) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 30099 LATA (Local Access Transport Area) : 648 Rate Center : POWER ZIP Code Count : 33 ZIP Code Frequency : 12 ZIP Code : 59433 Other Information NPANXX : 406463 Switch CLLI (Common Language Location Identifier) : POWRMTXCRS1 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : 3 RIVERS TELEPHONE COOPERATIVE, INC. OCN (Operating Company Number) : 2255 Coverage Area Name : POWER Latitude : 47.7149 Longitude : -111.6846 ‹ previous : 406-462 next › : 406-463 Telephone Number List 406-463-0000 ~ 406-463-9999