Area Code 605-739 located in DUPREE, ZIEBACH, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 739 City : DUPREE County : ZIEBACH State : SD (South Dakota) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 46137 LATA (Local Access Transport Area) : 640 Rate Center : FAITH ZIP Code Count : 6 ZIP Code Frequency : 5 ZIP Code : 57623 Other Information NPANXX : 605739 Switch CLLI (Common Language Location Identifier) : FATHSDXBDS1 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : GOLDEN WEST TEL COOP INC DBA GOLDEN WEST TELECOMM OCN (Operating Company Number) : 1659 Coverage Area Name : FAITH Latitude : 45.0257 Longitude : -102.0442 ‹ previous : 605-738 next › : 605-739 Telephone Number List 605-739-0000 ~ 605-739-9999