, your Nintendo 3DS serial number is the "DNA" of your console. While there is no official "lookup" tool to see a device's specific history, you can use the serial prefix to identify the model, region, and even if it’s a rare test unit. 1. Where to Find Your Serial Number
You do not need to open the console physically. Go to: → Other Settings → System Information The serial number is displayed on screen. Nintendo 3ds Serial Number Lookup