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Phone Directory 303-831 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 831-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-831 Denver, CO Qwest Corporation Denver Landline 02/04/1994

Other Series For Prefixes

303-8310###
303-8311###
303-8312###
303-8313###
303-8314###
303-8315###
303-8316###
303-8317###
303-8318###
303-8319###