for ns in $(dig NS deSEC.io +short); do for ip in $(dig +short $ns); do echo "$ns -> $ip"; whois $ip | grep -i -E "(country|city|netname|orgname)" | head -3; echo; done; done

ns1.deSEC.io. -> 45.54.76.1 NetName: NETACTUATE-MDN-01 OrgName: NetActuate, Inc City: Raleigh

ns2.desec.org. -> 157.53.224.1 NetName: NETACTUATE-MDN-04 OrgName: NetActuate, Inc City: Raleigh

Never heard of them before, but they look interesting, thanks for that. I'll transfer one of my .eu.org domains for testing it out.

deSEC.io is great, been using them more than 3 years. I wish they offered DDNS (like 1984.hosting does).