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Phone Directory 303-604 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 604-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-604 Denver, CO Qwest Corporation Jefferson Landline 09/11/1994

Other Series For Prefixes

303-6040###
303-6041###
303-6042###
303-6043###
303-6044###
303-6045###
303-6046###
303-6047###
303-6048###
303-6049###