Where is area code 389?

The information provided below is incorrect. Area code 388 exists within country code 90.

There is no area code +1 388 in North America.

International country code +388 was assigned to the European Telephone Numbering Space, for the purpose of allowing companies to use a single contact number throughout Europe, but the ETNS has been discontinued and all existing +388 numbers have been taken out of service. Country code +388 is now officially designated as "unassigned."