Area Code 406-283 located in LIBBY, LINCOLN, MT, more detail is as below. Place NPA (Numbering Plan Area) : 406 NXX (Local Number Prefix) : 283 City : LIBBY County : LINCOLN State : MT (Montana) NXX Use Type : Landline NXX Intro Version : 1999-10-13 FIPS (Federal Information Processing Standards) : 30053 LATA (Local Access Transport Area) : 960 Rate Center : LIBBY ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 59923 Other Information NPANXX : 406283 Switch CLLI (Common Language Location Identifier) : LBBYMTXCDS0 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : CITIZENS TELECOM CO OF MT-FRONTIER COMM OF MT OCN (Operating Company Number) : 4322 Coverage Area Name : LIBBY Latitude : 48.3899 Longitude : -115.5496 ‹ previous : 406-282 next › : 406-284 Telephone Number List 406-283-0000 ~ 406-283-9999