shell:$ nslookup -timeout=2 -retry=1 'lk21.org'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	lk21.org
Address: 104.21.92.248
Name:	lk21.org
Address: 172.67.201.1
Name:	lk21.org
Address: 2606:4700:3030::ac43:c901
Name:	lk21.org
Address: 2606:4700:3033::6815:5cf8