I forgot about this because I didn't focus much on the DNS server aspect of Pkarr.
But yes, because it commits to the DNS packet format, without much modifications you can use your dig or nslookup to learn more about a pubky, and all you need extra is the address of one DNS server that recognises Pkarr.
You want to know what homeserver a pubky uses, you make send an HTTPS question for the domain `_pubky.<the pubky>`
Not necessary for any app development but definitely handy for debugging
nostr:note1ekwhpnumsx077677hsrwaxp9a36ql4q7rfpkcwrgs9c2zem3e64qrzwz08
Can you tell me exactly what to put in here, to set it up?
https://app.pkarr.org/
you can put whatever you want, but all these will end up TXT records, that is the only type supported in this app.
so maybe lookup txt records with nslookup