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

Non-authoritative answer:
Name:	subdomainfinder.com
Address: 104.21.60.12
Name:	subdomainfinder.com
Address: 172.67.186.216
Name:	subdomainfinder.com
Address: 2606:4700:3032::6815:3c0c
Name:	subdomainfinder.com
Address: 2606:4700:3034::ac43:bad8