Area Code 406-737 located in GERALDINE, CHOUTEAU, MT, more detail is as below. Place NPA (Numbering Plan Area) : 406 NXX (Local Number Prefix) : 737 City : GERALDINE County : CHOUTEAU State : MT (Montana) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 30015 LATA (Local Access Transport Area) : 648 Rate Center : GERALDINE ZIP Code Count : 297 ZIP Code Frequency : 98 ZIP Code : 59446 Other Information NPANXX : 406737 Switch CLLI (Common Language Location Identifier) : GLDNMTXCRS1 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : CENTRAL MONTANA COMMUNICATIONS, INC. OCN (Operating Company Number) : 3310 Coverage Area Name : GERALDINE Latitude : 47.6057 Longitude : -110.2609 ‹ previous : 406-736 next › : 406-738 Telephone Number List 406-737-0000 ~ 406-737-9999