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Phone Directory 303-301 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 301-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-301 Denver, CO Icg Telecom Group Denver Landline 04/01/1997

Other Series For Prefixes

303-3010###
303-3011###
303-3012###
303-3013###
303-3014###
303-3015###
303-3016###
303-3017###
303-3018###
303-3019###