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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
303-912 Jefferson Denver, CO Cellco Partnership DBA Verizon Wireless
303-913 Jefferson Denver, CO Cellco Partnership DBA Verizon Wireless
303-914 Jefferson Denver, CO Qwest Corporation
303-915 Jefferson Denver, CO Cellco Partnership DBA Verizon Wireless
303-916 Jefferson Denver, CO Cellco Partnership DBA Verizon Wireless
303-917 Jefferson Denver, CO Cellco Partnership DBA Verizon Wireless
303-918 Jefferson Denver, CO Cellco Partnership DBA Verizon Wireless
303-919 Jefferson Denver, CO Cellco Partnership DBA Verizon Wireless
303-920 Adams Denver, CO Qwest Corporation
303-921 Jefferson Denver, CO Cellco Partnership DBA Verizon Wireless
303-922 Denver Denver, CO Qwest Corporation
303-923 Denver Denver, CO Icg Telecom Group
303-924 Jefferson Denver, CO Qwest Corporation
303-925 Jefferson Denver, CO Qwest Corporation
303-926 Jefferson Denver, CO Qwest Corporation
303-927 Arapahoe Denver, CO Teleport Communications America
303-928 Denver Denver, CO Mcimetro Access Transmission Services LLC
303-929 Jefferson Denver, CO Cellco Partnership DBA Verizon Wireless
303-930 Denver Denver, CO Qwest Corporation
303-931 Jefferson Denver, CO T-mobile Usa
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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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