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Phone Directory 303-731 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 731-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-731 Aurora, CO Level 3 Communications Denver Landline 04/01/1997

Other Series For Prefixes

303-7310###
303-7311###
303-7312###
303-7313###
303-7314###
303-7315###
303-7316###
303-7317###
303-7318###
303-7319###