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Phone Directory 303-485 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 485-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-485 Longmont, CO Qwest Corporation Boulder Landline 01/25/1998

Other Series For Prefixes

303-4850###
303-4851###
303-4852###
303-4853###
303-4854###
303-4855###
303-4856###
303-4857###
303-4858###
303-4859###