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; ec

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