Colorado Phone Numbers

Fixed Lines

  • +1 303-321-1600
  • +1 303-378-7487
  • +1 303-276-5821
  • +1 303-751-4178
  • +1 303-685-7327
  • +1 303-332-8655
  • +1 303-506-7156
  • +1 303-560-8434
  • +1 303-603-3581
  • +1 303-448-8714

Mobile Lines

  • +1 320-553-0045
  • +1 215-254-0507
  • +1 205-896-5400
  • +1 347-471-4846
  • +1 219-959-6950
  • +1 239-416-1988
  • +1 207-289-7925
  • +1 209-882-8490
  • +1 219-627-7891
  • +1 310-768-2341

The Colorado area code is +1303 and the calling code forUnited States of America is +1. An area code of a region containsthe country code. This means that phone numbers in Colorado start with +1303. The phone number format for Colorado is +1 303-XXX-XXXX.

You can use these phone numbers to compare them with a phone number that your received from someone in Colorado.In this way, you can ensure that the number is valid and from Colorado.

Generate random phone numbers for Colorado and use them to test your validations or show them as an example for users. The users will know how they should type their phone number.For example, if you require the number for a landline in Colorado and the user enters his local number without the prefix 1303 and he doesn't specify area code, then you don't knowif the number is correct.