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Phone Directory 303-554 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 554-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-554 Denver, CO Qwest Corporation Jefferson Landline 10/15/1996

Other Series For Prefixes

303-5540###
303-5541###
303-5542###
303-5543###
303-5544###
303-5545###
303-5546###
303-5547###
303-5548###
303-5549###