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
303-383 Denver Denver, CO Qwest Corporation
303-384 Jefferson Golden, CO Qwest Corporation
303-385 Denver Denver, CO Icg Telecom Group
303-386 Denver Denver, CO Icg Telecom Group
303-387 Denver Denver, CO Mcleodusa Telecommunications Services- Co
303-388 Denver Denver, CO Qwest Corporation
303-389 Denver Denver, CO Qwest Corporation
303-390 Denver Denver, CO Mcimetro Access Transmission Services LLC
303-391 Denver Denver, CO Qwest Corporation
303-392 Jefferson Denver, CO Contact Paging Of Colorado
303-393 Denver Denver, CO Qwest Corporation
303-394 Denver Denver, CO Qwest Corporation
303-395 Jefferson Denver, CO Global Crossing Local Services-co
303-396 Jefferson Denver, CO Live Wire Networks
303-397 Jefferson Denver, CO Qwest Corporation
303-398 Denver Denver, CO Qwest Corporation
303-399 Denver Denver, CO Qwest Corporation
303-400 Jefferson Denver, CO Qwest Corporation
303-401 Jefferson Denver, CO Qwest Corporation
303-402 Jefferson Denver, CO Qwest Corporation
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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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