605 Area Code has 619 prefixes

PrefixPrimary CityCarrier
605-966JeffersonJefferson Telephone Co.
605-967FaithCity Of Faith Municipal Telephone Co.
605-968Sioux FallsCellco Partnership Dba Verizon Wireless - Sd
605-969KilgoreGreat Plains Communications, Inc.
605-973HighmoreVenture Communications Cooperative
605-977Sioux FallsQwest Corporation
605-978Sioux FallsQwest Corporation
605-983ArlingtonQwest Corporation
605-984CrooksAlliance Communications Cooperative, Inc. (baltic)
605-985WallGolden West Tel Coop Inc Dba Golden West Telecomm
605-987CantonQwest Corporation
605-988Sioux FallsQwest Corporation
605-990MitchellAtv Holdings, Llc Dba Mitchell Telecom - Sd
605-993WallGolden West Tel Coop Inc Dba Golden West Telecomm
605-994HeclaJames Valley Cooperative Telephone Company
605-995MitchellQwest Corporation
605-996MitchellQwest Corporation
605-997FlandreauQwest Corporation
605-999Sioux FallsCellco Partnership Dba Verizon Wireless - Sd