Area Code 406-485 located in TERRY, PRAIRIE, MT, more detail is as below. Place NPA (Numbering Plan Area) : 406 NXX (Local Number Prefix) : 485 City : TERRY County : PRAIRIE State : MT (Montana) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 30079 LATA (Local Access Transport Area) : 650 Rate Center : CIRCLE ZIP Code Count : 27 ZIP Code Frequency : 3 ZIP Code : 59349 Other Information NPANXX : 406485 Switch CLLI (Common Language Location Identifier) : CRCLMTXCRS1 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : MID-RIVERS TELEPHONE COOPERATIVE, INC. OCN (Operating Company Number) : 2246 Coverage Area Name : CIRCLE Latitude : 47.4250 Longitude : -105.5716 ‹ previous : 406-485 next › : 406-485 Telephone Number List 406-485-0000 ~ 406-485-9999