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Phone Directory 303-237 Detail

State Major City Time Zone
Colorado Denver Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-237 Denver, CO Qwest Corporation Jefferson Landline 02/04/1994

Other Series For Prefixes

303-2370###
303-2371###
303-2372###
303-2373###
303-2374###
303-2375###
303-2376###
303-2377###
303-2378###
303-2379###