Seems something like this should be another layer to NIP-05. Since currently just shows you control the web server that DNS is using. Not the DNS itself.
Discussion
We need a Nostr native name service, but how?
I had thoughts a while back...
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Best example in DNS would be how https://www.opennic.org/ works with their Top Level Domains (TLDs). If use their DNS servers those domains work. Like using .local at home.
Came across this for reference https://github.com/nostr-protocol/nips/pull/386
I think that would work!