The address ID value is composed of eight digits followed by a single letter. The eight digits uniquely identify the address. The final character indicates the combination of new and old information that the address contains.

Enter the address ID value in address code lookup mode to update the address information. When you verify the address in address code lookup mode, you can return the address in the older, land lot-based format or the current, street-based format. You can also return the six-digit post code or the current five-digit post code for the address.

When you enter the address ID value in address code lookup mode, you must update the final character to specify the types of information that you need. For more information, see Extended Archives and South Korea Addresses.