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Phone Directory 303-355 Detail

State Major City Time Zone
Colorado Denver Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-355 Denver, CO Qwest Corporation Denver Landline 02/04/1994

Other Series For Prefixes

303-3550###
303-3551###
303-3552###
303-3553###
303-3554###
303-3555###
303-3556###
303-3557###
303-3558###
303-3559###