Area Code 406-486 located in MILDRED, PRAIRIE, MT, more detail is as below. Place NPA (Numbering Plan Area) : 406 NXX (Local Number Prefix) : 486 City : MILDRED 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 : FALLON ZIP Code Count : 10 ZIP Code Frequency : 3 ZIP Code : 59341 Other Information NPANXX : 406486 Switch CLLI (Common Language Location Identifier) : FLLNMTXCRS1 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 : FALLON Latitude : 46.8310 Longitude : -105.1226 ‹ previous : 406-486 next › : 406-486 Telephone Number List 406-486-0000 ~ 406-486-9999