International Dialing Instructions


International Calling
Duke offers faculty and staff the ability to place international calls for business purposes. If you don’t find the information you need below, contact the OIT Service Desk at 919-684-2200 menu option #4.

  • To place an international call; dial 011 + the country code + the phone number you are trying to reach.
  • AT&T’s International Dialing Guide can provide the proper country codes required to dial your international call.
  • At times there may be countries that are blocked from calling due to increased risk of fraud. If you are unable to dial a specific international number, OIT may be able to temporarily remove calling restrictions for individuals. You may submit a request asking to be granted international dialing rights to a specific country/number. The request will be reviewed by administration for approval. Lead time is (5-7) business days.