Find domain github.com's historical host IPs

IP History

	Basic Info			IP Whois Info
#ID	Host	IP Address	LastSeen	ASN	IP/CIDR	Organization
2281	@	204.232.175.90	2013-08-28	AS27357	204.232.128.0 - 204.232.191.255	RACKSPACE - Rackspace Hosting
2282	@	207.97.227.239	2013-04-05	AS27357	207.97.192.0 - 207.97.255.255	RACKSPACE - Rackspace Hosting