shell:$ nslookup -timeout=2 -retry=1 'ns4.he.net'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	ns4.he.net
Address: 216.66.1.2
Name:	ns4.he.net
Address: 2001:470:400::2