Robtex

Up: 173.194.72.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 173.194.72.0/26
Down right: 173.194.72.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
173.194.72.12	PTR	hd-in-f12.1e100.net
173.194.72.12	A	vintagenovels.com
173.194.72.14	A+PTR	tf-in-f14.1e100.net
173.194.72.16	PTR	tf-in-f16.1e100.net
173.194.72.16	A	mail.cannes.com.br
173.194.72.16	A	mail.muldoonassociates.com
173.194.72.17	A+PTR	tf-in-f17.1e100.net
173.194.72.17	A	mail.whatisfun.com
173.194.72.17	A	mail.rehpl.co.in
173.194.72.18	A	mail.whatisfun.com
173.194.72.18	A	mail.rehpl.co.in
173.194.72.18	A	mail.mmail.com.my
173.194.72.19	PTR	tf-in-f19.1e100.net
173.194.72.19	A	mail.whatisfun.com
173.194.72.19	A	mail.rehpl.co.in
173.194.72.26	PTR	hd-in-f26.1e100.net
173.194.72.26	A	*.mindstormsnxt.gr.s7a2.psmtp.com
173.194.72.26	A	turnstonefurniture.com.mail6.psmtp.com
173.194.72.27	A	*.arezzo.it.s201a2.psmtp.com
173.194.72.27	A	uwproducts.com.s7a2.psmtp.com
173.194.72.27	A	ets.net.mail6.psmtp.com
173.194.72.28	A	outbounds5.ga.obsmtp.com
173.194.72.31	PTR	tf-in-f31.1e100.net
173.194.72.32	PTR	tf-in-f32.1e100.net
173.194.72.33	PTR	tf-in-f33.1e100.net
173.194.72.37	A+PTR	tf-in-f37.1e100.net
173.194.72.37	A	adwordspe.l.google.com
173.194.72.38	PTR	tf-in-f38.1e100.net
173.194.72.39	PTR	tf-in-f39.1e100.net
173.194.72.40	PTR	tf-in-f40.1e100.net
173.194.72.41	PTR	tf-in-f41.1e100.net
173.194.72.42	PTR	tf-in-f42.1e100.net
173.194.72.43	PTR	hd-in-f43.1e100.net
173.194.72.44	A	tf-in-f44.1e100.net
173.194.72.47	PTR	hd-in-f47.1e100.net
173.194.72.50	A	tf-in-f50.1e100.net
173.194.72.51	PTR	tf-in-f51.1e100.net
173.194.72.51	A	adwordsgr.l.google.com
173.194.72.56	A	tf-in-f56.1e100.net
173.194.72.57	PTR	tf-in-f57.1e100.net
173.194.72.59	PTR	tf-in-f59.1e100.net
173.194.72.59	A	adwordspl.l.google.com
173.194.72.60	A	adwordsch.l.google.com
173.194.72.60	A	tf-in-f60.1e100.net
173.194.72.64	A	tf-in-f64.1e100.net
173.194.72.65	A	tf-in-f65.1e100.net
173.194.72.66	PTR	tf-in-f66.1e100.net
173.194.72.68	A	tf-in-f68.1e100.net
173.194.72.76	PTR	tf-in-f76.1e100.net
173.194.72.81	A+PTR	tf-in-f81.1e100.net
173.194.72.81	A	www5.sandbox.google.com
173.194.72.81	A	sugar.sandbox.google.com
173.194.72.82	A	chromium.googlecode.com
173.194.72.82	A	freenet.googlecode.com
173.194.72.82	A	sdffdsfff.googlecode.com
173.194.72.83	A+PTR	tf-in-f83.1e100.net
173.194.72.83	A	mail.whatisfun.com
173.194.72.83	A	mail.rehpl.co.in
173.194.72.84	PTR	tf-in-f84.1e100.net
173.194.72.85	A	a.orkut.gmodules.com
173.194.72.85	A	orkut.nl
173.194.72.85	A	www.orkut.cn
173.194.72.86	PTR	hd-in-f86.1e100.net
173.194.72.86	A	a.orkut.gmodules.com
173.194.72.86	A	orkut.nl
173.194.72.87	A	a.orkut.gmodules.com
173.194.72.87	A	orkut.nl
173.194.72.87	A	www.orkut.cn
173.194.72.88	A+PTR	tf-in-f88.1e100.net
173.194.72.90	A+PTR	tf-in-f90.1e100.net
173.194.72.93	A	tf-in-f93.1e100.net
173.194.72.94	A	finitiated.com
173.194.72.94	A	tf-in-f94.1e100.net
173.194.72.94	A	6666021.com
173.194.72.95	A	129.138-static.reverse.googleapis.com
173.194.72.95	A	bos-ns1.bos.buzz.googleapis.com
173.194.72.95	A	*.ajax.googleapis.com
173.194.72.96	A+PTR	tf-in-f96.1e100.net
173.194.72.97	A+PTR	tf-in-f97.1e100.net
173.194.72.98	A+PTR	tf-in-f98.1e100.net
173.194.72.99	PTR	hd-in-f99.1e100.net
173.194.72.100	A	groups.google.co.zm
173.194.72.100	A	tf-in-f100.1e100.net
173.194.72.100	A	groups.google.us
173.194.72.101	A	groups.google.co.zm
173.194.72.101	A	groups.google.us
173.194.72.101	A	www.my-dejanews.com
173.194.72.102	A	groups.google.co.zm
173.194.72.102	A	groups.google.us
173.194.72.102	A	www.my-dejanews.com
173.194.72.104	A	tf-in-f104.1e100.net
173.194.72.104	A	www.silvervineit.com
173.194.72.105	A	tf-in-f105.1e100.net
173.194.72.105	A	378567.com
173.194.72.105	A	628668.com
173.194.72.106	A	tf-in-f106.1e100.net
173.194.72.108	A	mail.labotigadelparquet.com
173.194.72.108	A	mail.equalizerwomen.com
173.194.72.108	A	pop3.arcoscom.com
173.194.72.109	A	mail.labotigadelparquet.com
173.194.72.109	A	mail.equalizerwomen.com
173.194.72.109	A	pop3.arcoscom.com
173.194.72.111	A	groupapec.com
173.194.72.112	A+PTR	tf-in-f112.1e100.net
173.194.72.113	A	groups.google.co.zm
173.194.72.113	A	groups.google.us
173.194.72.113	A	www.my-dejanews.com
173.194.72.114	A+PTR	tf-in-f114.1e100.net
173.194.72.115	A	tf-in-f115.1e100.net
173.194.72.116	A+PTR	tf-in-f116.1e100.net
173.194.72.117	PTR	hd-in-f117.1e100.net
173.194.72.117	A	tf-in-f117.1e100.net
173.194.72.118	A+PTR	tf-in-f118.1e100.net
173.194.72.118	A	mc8tdi0ripmbpds25eboaupdulritrp6.friendconnect.gmodules.com
173.194.72.120	A+PTR	tf-in-f120.1e100.net
173.194.72.121	PTR	hd-in-f121.1e100.net
173.194.72.121	A	mail.lanv.org
173.194.72.121	A	www.lduc.org
173.194.72.122	A+PTR	tf-in-f122.1e100.net
173.194.72.123	A+PTR	tf-in-f123.1e100.net
173.194.72.125	A+PTR	tf-in-f125.1e100.net
173.194.72.127	PTR	hd-in-f127.1e100.net
173.194.72.127	A	tf-in-f127.1e100.net