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Phone Directory 303-740 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 740-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-740 Denver, CO Qwest Corporation Denver Landline 02/04/1994

Other Series For Prefixes

303-7400###
303-7401###
303-7402###
303-7403###
303-7404###
303-7405###
303-7406###
303-7407###
303-7408###
303-7409###