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Phone Directory 303-747 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 747-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-747 Allenspark, CO Qwest Corporation Boulder Landline 02/04/1994

Other Series For Prefixes

303-7470###
303-7471###
303-7472###
303-7473###
303-7474###
303-7475###
303-7476###
303-7477###
303-7478###
303-7479###