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Phone Directory 720-521 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (720) 521-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
720-521 Denver, CO American Messaging (am) Denver Cell Number 07/22/1999

Other Series For Prefixes

720-5210###
720-5211###
720-5212###
720-5213###
720-5214###
720-5215###
720-5216###
720-5217###
720-5218###
720-5219###