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Phone Directory 303-406 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 406-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-406 Denver, CO Icg Telecom Group Denver Landline 07/06/1997

Other Series For Prefixes

303-4060###
303-4061###
303-4062###
303-4063###
303-4064###
303-4065###
303-4066###
303-4067###
303-4068###
303-4069###