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Phone Directory 303-440 Detail

State Major City Time Zone
Colorado Denver Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-440 Denver, CO Qwest Corporation Jefferson Landline 02/04/1994

Other Series For Prefixes

303-4400###
303-4401###
303-4402###
303-4403###
303-4404###
303-4405###
303-4406###
303-4407###
303-4408###
303-4409###