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Phone Directory 303-439 Detail

State Major City Time Zone
Colorado Denver Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-439 Denver, CO Qwest Corporation Adams Landline 09/11/1994

Other Series For Prefixes

303-4390###
303-4391###
303-4392###
303-4393###
303-4394###
303-4395###
303-4396###
303-4397###
303-4398###
303-4399###