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Phone Directory 520-378 Detail

State Major City Time Zone
Arizona Phoenix (UTC-7)

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
520-378 Sierra Vista, AZ Qwest Corporation Cochise Landline 02/11/1995

Other Series For Prefixes

520-3780###
520-3781###
520-3782###
520-3783###
520-3784###
520-3785###
520-3786###
520-3787###
520-3788###
520-3789###