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: 13.225.47.50
Name:	rubi.com
Address: 13.225.47.16
Name:	rubi.com
Address: 13.225.47.58
Name:	rubi.com
Address: 13.225.47.84