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Phone Directory 720-423 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (720) 423-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
720-423 Denver, CO Qwest Corporation Jefferson Landline 04/22/2004

Other Series For Prefixes

720-4230###
720-4231###
720-4232###
720-4233###
720-4234###
720-4235###
720-4236###
720-4237###
720-4238###
720-4239###