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Phone Directory 303-340 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 340-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-340 Aurora, CO Qwest Corporation Arapahoe Landline 02/04/1994

Other Series For Prefixes

303-3400###
303-3401###
303-3402###
303-3403###
303-3404###
303-3405###
303-3406###
303-3407###
303-3408###
303-3409###