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Phone Directory 303-640 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 640-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-640 Denver, CO Qwest Corporation Denver Landline 02/04/1994

Other Series For Prefixes

303-6400###
303-6401###
303-6402###
303-6403###
303-6404###
303-6405###
303-6406###
303-6407###
303-6408###
303-6409###