Area Code 406-775 located in HAMMOND, CARTER, MT, more detail is as below. Place NPA (Numbering Plan Area) : 406 NXX (Local Number Prefix) : 775 City : HAMMOND County : CARTER State : MT (Montana) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 30011 LATA (Local Access Transport Area) : 650 Rate Center : EKALAKA ZIP Code Count : 14 ZIP Code Frequency : 2 ZIP Code : 59332 Other Information NPANXX : 406775 Switch CLLI (Common Language Location Identifier) : EKLKMTXCRS1 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 : EKALAKA Latitude : 45.8844 Longitude : -104.5302 ‹ previous : 406-775 next › : 406-775 Telephone Number List 406-775-0000 ~ 406-775-9999