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Phone Directory 303-313 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 313-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-313 Denver, CO Qwest Corporation Denver Landline 04/15/1996

Other Series For Prefixes

303-3130###
303-3131###
303-3132###
303-3133###
303-3134###
303-3135###
303-3136###
303-3137###
303-3138###
303-3139###