Nintendo of Australia has released its tool to help you discover if you're in the Nintendo 3DS Ambassador programme or not.
All you need to take the test is your 3DS serial number, located underneath the console itself. Type it into the special webpage and Nintendo will do the rest.
Note that this does not register you in the free game promotion, only checks to see if you are already entered. If the tool tells you you're not in, you're not in.
Don't forget we still have our 3DS Ambassador program and free eShop games FAQ available to help guide you through the tricky world of whether or not you're getting free games.
Check out the Australian 3DS Ambassador tool. Users in North America and Europe will receive a similar tool soon.