Area Code 688
Area Code 688 Assignment
Area Code 688 History:
Area Code 688 has not been assigned for use by the North American Numbering Plan Administrator. Area Code 688 is officially designated an Easily Recognizable Code.
When the second and third digits of an area code are the same, that code is called an easily recognizable code (ERC) and assigned to specific services such as toll-free services.
If you receive a phone call from area code 688 it is a spam call. Any phone number such as 688-xxx-xxx does not exist.