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Phone Directory 720-921 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (720) 921-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
720-921 Denver, CO Icg Telecom Group Denver Landline 10/13/1999

Other Series For Prefixes

720-9210###
720-9211###
720-9212###
720-9213###
720-9214###
720-9215###
720-9216###
720-9217###
720-9218###
720-9219###