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Phone Directory 303-306 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 306-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-306 Aurora, CO Qwest Corporation Arapahoe Landline 04/15/1996

Other Series For Prefixes

303-3060###
303-3061###
303-3062###
303-3063###
303-3064###
303-3065###
303-3066###
303-3067###
303-3068###
303-3069###