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Phone Directory 303-274 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 274-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-274 Denver, CO Qwest Corporation Jefferson Landline 02/04/1994

Other Series For Prefixes

303-2740###
303-2741###
303-2742###
303-2743###
303-2744###
303-2745###
303-2746###
303-2747###
303-2748###
303-2749###