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Phone Directory 303-424 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 424-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-424 Denver, CO Qwest Corporation Jefferson Landline 02/04/1994

Other Series For Prefixes

303-4240###
303-4241###
303-4242###
303-4243###
303-4244###
303-4245###
303-4246###
303-4247###
303-4248###
303-4249###