Sub-sub domain and multiple domains

[0yqc]

@fransallen You make the rules, can you answer this?

Is a sub-sub domain possible? Something like foo.bar.thedev.id? I'd like to have 0y.thedev.id* as my web page and something like py.0y.thedev.id as a subpage for python projects.

Second: Am i allowed to have multiple subdomains, if they're free, like "0y" & "0" or may I just use one, and if it's allowed, how many can I have? I'd like to have the short link 0.thedev.id and the normal site 0y.thedev.id.

*: Would I even be allowed to just have a y.thedev.id if it's still free?

Thanks for all answers!