Robtex

Up: 173.194.216.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 173.194.216.0/25
Down right: 173.194.216.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
173.194.216.14	A+PTR	vu-in-f14.1e100.net
173.194.216.26	PTR	vu-in-f26.1e100.net
173.194.216.26	A	gaspais.com.s9a1.psmtp.com
173.194.216.26	A	vikatan.com.s10a1.psmtp.com
173.194.216.27	PTR	vu-in-f27.1e100.net
173.194.216.27	A	wednet.edu.s10a1.psmtp.com
173.194.216.27	A	ubankfl.com.s5a1.psmtp.com
173.194.216.71	PTR	vu-in-f71.1e100.net
173.194.216.94	A+PTR	vu-in-f94.1e100.net
173.194.216.95	A+PTR	vu-in-f95.1e100.net
173.194.216.99	A+PTR	vu-in-f99.1e100.net
173.194.216.100	A+PTR	vu-in-f100.1e100.net
173.194.216.101	PTR	vu-in-f101.1e100.net
173.194.216.102	PTR	vu-in-f102.1e100.net
173.194.216.102	A	dev1453.com
173.194.216.103	A+PTR	vu-in-f103.1e100.net
173.194.216.104	A+PTR	vu-in-f104.1e100.net
173.194.216.105	A+PTR	vu-in-f105.1e100.net
173.194.216.106	A+PTR	vu-in-f106.1e100.net
173.194.216.109	A+PTR	vu-in-f109.1e100.net
173.194.216.113	A+PTR	vu-in-f113.1e100.net
173.194.216.116	A+PTR	vu-in-f116.1e100.net
173.194.216.120	A+PTR	vu-in-f120.1e100.net
173.194.216.121	PTR	vu-in-f121.1e100.net
173.194.216.121	A	mail.jpn-virtualvarsity.org
173.194.216.121	A	www.hydrogenenergycenter.org
173.194.216.128	A	dennisjames.net
173.194.216.128	A	ricardocabello.com
173.194.216.132	PTR	vu-in-f132.1e100.net
173.194.216.136	A	vu-in-f136.1e100.net
173.194.216.138	A+PTR	vu-in-f138.1e100.net
173.194.216.139	PTR	vu-in-f139.1e100.net
173.194.216.141	A	000800.com.cn--showsiteinf.appspot.com--www.showsiteinf.appspot.com
173.194.216.147	A+PTR	vu-in-f147.1e100.net
173.194.216.153	A+PTR	vu-in-f153.1e100.net
173.194.216.154	A+PTR	vu-in-f154.1e100.net
173.194.216.159	A+PTR	vu-in-f159.1e100.net
173.194.216.164	A+PTR	vu-in-f164.1e100.net
173.194.216.188	A+PTR	vu-in-f188.1e100.net