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Phone Directory 605-665 Detail

State Major City Time Zone
South Dakota Sioux Falls Central / Mountain

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Example: (605) 665-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
605-665 Yankton, SD Qwest Corporation Yankton Landline 02/04/1994

Other Series For Prefixes

605-6650###
605-6651###
605-6652###
605-6653###
605-6654###
605-6655###
605-6656###
605-6657###
605-6658###
605-6659###