creating a domain

[blade10101]

I have used * as a domain to add a AAAA record, but I don't understand how this dns works as it never resolves.

[Jan69]

you don't fill that part, for base domain
you select a domain name, like "example.index" and leave the record part empty for the base domain, if you put anything in it, then it will be treated as the subdomain, e.g. if you put "www" in it it will match requests for "www.example.index", I don't think wildcard match is supported directly yet, but given you can set NS records, I guess you could just point it to a normal DNS server if you need that

[Revertron]

There are two usual symbols in DNS:

1. The @ means the domain itself. You enter @ and the IP, and your domain example.ygg will resolve to that IP.
2. The * means all records that are not existing. You enter www, ftp or what ever with some IPs, the will resolve to those IPS. But you add the record with *, and ANY non-existing records like test123456788.example.ygg will resolve to that IP.