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Area Code 303 - Denver, CO

Below is the information for Area Code 303
General Information for Area Code 303
Country United States
State/Province Colorado
Major City Denver
Time Zone Mountain (UTC-07:00)

Phone directory of numbers beginning with Area Code 303 Prefixes

Prefix Primary City County Phone Type
303-343 Aurora, CO Arapahoe Landline
303-344 Aurora, CO Arapahoe Landline
303-345 Denver, CO Denver Landline
303-346 Littleton, CO Douglas Landline
303-347 Denver, CO Jefferson Landline
303-348 Aurora, CO Adams Landline
303-349 Denver, CO Jefferson Cell Number
303-350 Denver, CO Denver Landline
303-351 Keenesburg, CO Weld Landline
303-352 Denver, CO Denver Landline
303-353 Denver, CO Denver Landline
303-354 Denver, CO Denver Landline
303-355 Denver, CO Denver Landline
303-356 Denver, CO Jefferson Cell Number
303-357 Denver, CO Denver Landline
303-358 Denver, CO Jefferson Cell Number
303-359 Denver, CO Jefferson Cell Number
303-360 Aurora, CO Arapahoe Landline
303-361 Aurora, CO Arapahoe Landline
303-362 Denver, CO Arapahoe Landline
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Location Details

Area code is a type of numbering scheme used in telecommunication. It divides the territories of its member countries, the code is a three-digit code. The digits 0 and 1 applied for central office codes. Other digits were applied into geographic areas of the service territory.

  • 200: easily recognizable code (ERC)
  • 201: New Jersey
  • 202: Washington, D.C.
  • 203: Connecticut
    • and so on.

If you want to get more informatons of the areacode, Input an areacode into the above search area, get what you want.