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Phone Directory 303-504 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 504-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-504 Denver, CO Qwest Corporation Denver Landline 04/15/1996

Other Series For Prefixes

303-5040###
303-5041###
303-5042###
303-5043###
303-5044###
303-5045###
303-5046###
303-5047###
303-5048###
303-5049###