Area Code 605-973 located in AGAR, SULLY, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 973 City : AGAR County : SULLY State : SD (South Dakota) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 46119 LATA (Local Access Transport Area) : 640 Rate Center : ONIDA ZIP Code Count : 4 ZIP Code Frequency : 5 ZIP Code : 57520 Other Information NPANXX : 605973 Switch CLLI (Common Language Location Identifier) : ONIDSDXA97G Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : VENTURE COMMUNICATIONS COOPERATIVE OCN (Operating Company Number) : 1680 Coverage Area Name : ONIDA Latitude : 44.7056 Longitude : -99.8491 ‹ previous : 605-973 next › : 605-973 Telephone Number List 605-973-0000 ~ 605-973-9999