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Phone Directory 303-370 Detail

State Major City Time Zone
Colorado Denver Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-370 Denver, CO Qwest Corporation Denver Landline 02/04/1994

Other Series For Prefixes

303-3700###
303-3701###
303-3702###
303-3703###
303-3704###
303-3705###
303-3706###
303-3707###
303-3708###
303-3709###