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Phone Directory 303-377 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 377-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-377 Denver, CO Qwest Corporation Denver Landline 02/04/1994

Other Series For Prefixes

303-3770###
303-3771###
303-3772###
303-3773###
303-3774###
303-3775###
303-3776###
303-3777###
303-3778###
303-3779###