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Phone Directory 303-397 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 397-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-397 Denver, CO Qwest Corporation Jefferson Landline 02/04/1994

Other Series For Prefixes

303-3970###
303-3971###
303-3972###
303-3973###
303-3974###
303-3975###
303-3976###
303-3977###
303-3978###
303-3979###