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Phone Directory 303-543 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 543-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-543 Denver, CO Qwest Corporation Jefferson Landline 02/04/1994

Other Series For Prefixes

303-5430###
303-5431###
303-5432###
303-5433###
303-5434###
303-5435###
303-5436###
303-5437###
303-5438###
303-5439###