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Phone Directory 303-423 Detail

State Major City Time Zone
Colorado Denver Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-423 Denver, CO Qwest Corporation Jefferson Landline 02/04/1994

Other Series For Prefixes

303-4230###
303-4231###
303-4232###
303-4233###
303-4234###
303-4235###
303-4236###
303-4237###
303-4238###
303-4239###