Area Code 605-649 located in AKASKA, WALWORTH, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 649 City : AKASKA County : WALWORTH State : SD (South Dakota) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 46129 LATA (Local Access Transport Area) : 640 Rate Center : SELBY ZIP Code Count : 54 ZIP Code Frequency : 7 ZIP Code : 57420 Other Information NPANXX : 605649 County Population : 0 Switch CLLI (Common Language Location Identifier) : SLBYSDXARS1 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : VENTURE COMMUNICATIONS COOPERATIVE OCN (Operating Company Number) : 1680 Coverage Area Name : SELBY Latitude : 45.5060 Longitude : -100.0344 ‹ previous : 605-649 next › : 605-649 Telephone Number List 605-649-0000 ~ 605-649-9999