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Phone Directory 303-299 Detail

State Major City Time Zone
Colorado Denver Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-299 Denver, CO Qwest Corporation Denver Landline 02/04/1994

Other Series For Prefixes

303-2990###
303-2991###
303-2992###
303-2993###
303-2994###
303-2995###
303-2996###
303-2997###
303-2998###
303-2999###