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Phone Directory 303-256 Detail

State Major City Time Zone
Colorado Denver Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-256 Denver, CO Teleport Communications America Arapahoe Landline 04/01/1997

Other Series For Prefixes

303-2560###
303-2561###
303-2562###
303-2563###
303-2564###
303-2565###
303-2566###
303-2567###
303-2568###
303-2569###