Area Code 406-742 located in FAIRVIEW, RICHLAND, MT, more detail is as below. Place NPA (Numbering Plan Area) : 406 NXX (Local Number Prefix) : 742 City : FAIRVIEW County : RICHLAND State : MT (Montana) NXX Use Type : Landline NXX Intro Version : 1998-08-14 FIPS (Federal Information Processing Standards) : 30083 LATA (Local Access Transport Area) : 650 Rate Center : FAIRVIEW ZIP Code Count : 357 ZIP Code Frequency : 100 ZIP Code : 59221 Other Information NPANXX : 406742 Switch CLLI (Common Language Location Identifier) : FRVWMTMARS2 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : MID-RIVERS TELEPHONE COOPERATIVE, INC. OCN (Operating Company Number) : 7830 Coverage Area Name : SIDNEY Latitude : 47.8504 Longitude : -104.0439 ‹ previous : 406-741 next › : 406-743 Telephone Number List 406-742-0000 ~ 406-742-9999