Area Code 406-584 located in FALLON, PRAIRIE, MT, more detail is as below. Place NPA (Numbering Plan Area) : 406 NXX (Local Number Prefix) : 584 City : FALLON 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 : LINDSAY ZIP Code Count : 2 ZIP Code Frequency : 2 ZIP Code : 59326 Other Information NPANXX : 406584 Switch CLLI (Common Language Location Identifier) : LNDSMTXCRS1 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 : LINDSAY Latitude : 47.2227 Longitude : -105.1590 ‹ previous : 406-584 next › : 406-584 Telephone Number List 406-584-0000 ~ 406-584-9999