shell:$ nslookup -timeout=2 -retry=1 'captive.v2ex.co'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	captive.v2ex.co
Address: 104.26.10.129
Name:	captive.v2ex.co
Address: 172.67.72.36
Name:	captive.v2ex.co
Address: 104.26.11.129
Name:	captive.v2ex.co
Address: 2606:4700:20::681a:b81
Name:	captive.v2ex.co
Address: 2606:4700:20::681a:a81
Name:	captive.v2ex.co
Address: 2606:4700:20::ac43:4824