Area Code 406-215 located in BILLINGS, YELLOWSTONE, MT, more detail is as below. Place NPA (Numbering Plan Area) : 406 NXX (Local Number Prefix) : 215 City : BILLINGS County : YELLOWSTONE State : MT (Montana) NXX Use Type : Landline NXX Intro Version : 2003-05-09 FIPS (Federal Information Processing Standards) : 30111 LATA (Local Access Transport Area) : 648 Rate Center : BILLINGS ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 59105 Other Information NPANXX : 406215 Switch CLLI (Common Language Location Identifier) : BZMNMTFG00A MSA CBSA (Core Based Statistical Area) : Billings, MT MSA CBSA Code (Core Based Statistical Area) : 13740 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : ELTOPIA COMMUNICATIONS, LLC - MT OCN (Operating Company Number) : 921F Coverage Area Name : MISSOULA Latitude : 46.8709 Longitude : -113.9865 ‹ previous : 406-214 next › : 406-215 Telephone Number List 406-215-0000 ~ 406-215-9999