[lucgommans]

Or if you need records other than A/AAAA, like MX for delivering email: https://anyz.one

e.g. 10.2.3.4.anyz.one will refer the recursive resolver to query 10.2.3.4 for the answer to the query. You can also buy a domain and configure it to do that, but this is quicker

Disclosure: I wrote anyzone