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Phone Directory 303-800 Detail

State Major City Time Zone
Colorado Denver Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-800 Denver, CO Level 3 Communications Jefferson Landline 03/03/2001

Other Series For Prefixes

303-8000###
303-8001###
303-8002###
303-8003###
303-8004###
303-8005###
303-8006###
303-8007###
303-8008###
303-8009###