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Phone Directory 720-578 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (720) 578-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
720-578 Denver, CO Qwest Corporation Denver Landline 06/30/2001

Other Series For Prefixes

720-5780###
720-5781###
720-5782###
720-5783###
720-5784###
720-5785###
720-5786###
720-5787###
720-5788###
720-5789###