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
303-977 Denver, CO Jefferson Landline
303-978 Denver, CO Jefferson Landline
303-979 Denver, CO Jefferson Landline
303-980 Denver, CO Jefferson Landline
303-981 Denver, CO Jefferson Cell Number
303-982 Golden, CO Jefferson Landline
303-984 Denver, CO Jefferson Landline
303-985 Denver, CO Jefferson Landline
303-986 Denver, CO Jefferson Landline
303-987 Denver, CO Jefferson Landline
303-988 Denver, CO Jefferson Landline
303-989 Denver, CO Jefferson Landline
303-990 Fort Lupton, CO Weld Cell Number
303-991 Denver, CO Jefferson Landline
303-992 Denver, CO Denver Landline
303-993 Denver, CO Denver Landline
303-994 Denver, CO Jefferson Cell Number
303-995 Denver, CO Jefferson Cell Number
303-996 Denver, CO Jefferson Landline
303-997 Denver, CO Jefferson 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.