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Phone Directory 303-278 Detail

State Major City Time Zone
Colorado Denver Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-278 Golden, CO Qwest Corporation Jefferson Landline 02/04/1994

Other Series For Prefixes

303-2780###
303-2781###
303-2782###
303-2783###
303-2784###
303-2785###
303-2786###
303-2787###
303-2788###
303-2789###