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Area Code 303

303 is the North American Telephone Area Code For Colorado in United States.
District of Colorado area codes: 303
Country United States
State/Province Colorado
Major City Denver
Time Zone Mountain (UTC-07:00)

Phone directory with area code 303

Prefix County Primary City Company
303-998 Jefferson Denver, CO Qwest Corporation
303-999 Jefferson Denver, CO Comcast Phone Of Colorado
303-555 Used in movie Denver, CO Used in movie
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There are 783 prefixes, In the code area, the major cities are Arvada, CO;Aurora, CO;Boulder, CO;Brighton, CO;Bro. The major city is Denver.

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