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Phone Directory 303-429 Detail

State Major City Time Zone
Colorado Denver Mountain

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Example: (303) 429-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
303-429 Denver, CO Qwest Corporation Adams Landline 02/04/1994

Other Series For Prefixes

303-4290###
303-4291###
303-4292###
303-4293###
303-4294###
303-4295###
303-4296###
303-4297###
303-4298###
303-4299###