Area Code 406-431 located in HELENA, LEWIS AND CLARK, MT, more detail is as below. Place NPA (Numbering Plan Area) : 406 NXX (Local Number Prefix) : 431 City : HELENA County : LEWIS AND CLARK State : MT (Montana) NXX Use Type : Wireless NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 30049 LATA (Local Access Transport Area) : 648 Rate Center : HELENA ZIP Code Count : 9 ZIP Code Frequency : 47 ZIP Code : 59601 Other Information NPANXX : 406431 Switch CLLI (Common Language Location Identifier) : HLNAMTHUCM1 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 : CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT OCN (Operating Company Number) : 6564 Coverage Area Name : HELENA Latitude : 46.6012 Longitude : -112.0221 ‹ previous : 406-431 next › : 406-432 Telephone Number List 406-431-0000 ~ 406-431-9999
