*.id.au is an interesting domain that I haven’t seen before. Apparently you can get an id.au iff you’re an Australian citizen, and it must approximately match your real name.
From my experience it's very common with infosec students in Australia, the general public barely know it exists and probably consider it a weird second level domain.
It doesn't need to be anything like your real name, much like only needing a registered aus company to own a *.com.au
It's a 2ld for individuals, much like .com.au is a 2ld for companies. In this case, it's not actually supposed to match your real name, but nicknames are allowed.
