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Phone Directory 720-877 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (720) 877-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
720-877 Denver, CO Icg Telecom Group Jefferson Landline 10/13/1999

Other Series For Prefixes

720-8770###
720-8771###
720-8772###
720-8773###
720-8774###
720-8775###
720-8776###
720-8777###
720-8778###
720-8779###