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Phone Directory 712-779 Detail

State Major City Time Zone
Iowa Sioux City Central

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Example: (712) 779-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
712-779 Massena, IA Massena Telephone Co. Cass Landline 02/04/1994

Other Series For Prefixes

712-7790###
712-7791###
712-7792###
712-7793###
712-7794###
712-7795###
712-7796###
712-7797###
712-7798###
712-7799###