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Phone Directory 303-643 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 643-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-643 Denver, CO Qwest Corporation Jefferson Landline 02/04/1994

Other Series For Prefixes

303-6430###
303-6431###
303-6432###
303-6433###
303-6434###
303-6435###
303-6436###
303-6437###
303-6438###
303-6439###