Area Code 406-287 located in WHITEHALL, JEFFERSON, MT, more detail is as below. Place NPA (Numbering Plan Area) : 406 NXX (Local Number Prefix) : 287 City : WHITEHALL County : JEFFERSON State : MT (Montana) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 30043 LATA (Local Access Transport Area) : 648 Rate Center : WHITEHALL ZIP Code Count : 1317 ZIP Code Frequency : 85 ZIP Code : 59759 Other Information NPANXX : 406287 Switch CLLI (Common Language Location Identifier) : WHTHMTMARS1 MSA CBSA (Core Based Statistical Area) : Helena, MT MSA CBSA Code (Core Based Statistical Area) : 25740 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : QWEST CORPORATION OCN (Operating Company Number) : 9636 Coverage Area Name : WHITEHALL Latitude : 45.8720 Longitude : -112.0992 ‹ previous : 406-287 next › : 406-288 Telephone Number List 406-287-0000 ~ 406-287-9999
