Area Code 406-622 located in GREAT FALLS, CASCADE, MT, more detail is as below. Place NPA (Numbering Plan Area) : 406 NXX (Local Number Prefix) : 622 City : GREAT FALLS County : CASCADE State : MT (Montana) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 30013 LATA (Local Access Transport Area) : 648 Rate Center : FORTBENTON ZIP Code Count : 69 ZIP Code Frequency : 7 ZIP Code : 59405 Other Information NPANXX : 406622 Switch CLLI (Common Language Location Identifier) : FTBNMTXCDS0 MSA CBSA (Core Based Statistical Area) : Great Falls, MT MSA CBSA Code (Core Based Statistical Area) : 24500 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : CENTRAL MONTANA COMMUNICATIONS, INC. OCN (Operating Company Number) : 3310 Coverage Area Name : FORT BENTON Latitude : 47.8192 Longitude : -110.6713 ‹ previous : 406-621 next › : 406-622 Telephone Number List 406-622-0000 ~ 406-622-9999