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Phone Directory 605-638 Detail

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

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
605-638 Vermillion, SD Qwest Corporation Clay Landline 01/14/2000

Other Series For Prefixes

605-6380###
605-6381###
605-6382###
605-6383###
605-6384###
605-6385###
605-6386###
605-6387###
605-6388###
605-6389###