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Phone Directory 303-776 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 776-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-776 Longmont, CO Qwest Corporation Boulder Landline 02/04/1994

Other Series For Prefixes

303-7760###
303-7761###
303-7762###
303-7763###
303-7764###
303-7765###
303-7766###
303-7767###
303-7768###
303-7769###