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Phone Directory 720-397 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (720) 397-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
720-397 Denver, CO AT&T Local Denver Landline 09/08/2009

Other Series For Prefixes

720-3970###
720-3971###
720-3972###
720-3973###
720-3974###
720-3975###
720-3976###
720-3977###
720-3978###
720-3979###