What is area code 689?

Area code 689 has been reserved for future use in the North American Numbering Plan, which is the system used for assigning telephone numbers in the United States, Canada, and other countries. As of now, there are no active phone numbers with the 689 area code, and it is not currently assigned to any geographical region. If and when the 689 area code is put into use, it will likely be assigned to a specific region or territory based on the numbering plan guidelines.