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

Non-authoritative answer:
www.rubi.com	canonical name = rubi.com.
Name:	rubi.com
Address: 13.227.87.57
Name:	rubi.com
Address: 13.227.87.33
Name:	rubi.com
Address: 13.227.87.101
Name:	rubi.com
Address: 13.227.87.27