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Phone Directory 303-581 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 581-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-581 Denver, CO Qwest Corporation Jefferson Landline 02/04/1994

Other Series For Prefixes

303-5810###
303-5811###
303-5812###
303-5813###
303-5814###
303-5815###
303-5816###
303-5817###
303-5818###
303-5819###