Robtex

Up: 204.181.152.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 204.181.152.0/25
Down right: 204.181.152.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
204.181.152.2	A+PTR	ares.csd.net
204.181.152.2	A	www.csd.net
204.181.152.4	A+PTR	hera.csd.net
204.181.152.4	A	numuserv.com
204.181.152.4	A	archform.net
204.181.152.5	A	ether.csd.net
204.181.152.6	PTR	hydra.csd.net
204.181.152.8	A+PTR	hesperus.csd.net
204.181.152.8	A	www.rrcc.edu
204.181.152.8	A	rrcc.edu
204.181.152.11	PTR	syrinx.csd.net
204.181.152.11	A	mfg.org
204.181.152.11	A	klbcpa.com
204.181.152.23	A+PTR	ligea.csd.net
204.181.152.23	A	smtp.csd.net
204.181.152.23	A	mail.corkill.org
204.181.152.24	A+PTR	alke.csd.net
204.181.152.24	A	arapahoe.edu
204.181.152.25	PTR	silenus.csd.net
204.181.152.25	A	webmail.csd.net
204.181.152.27	A	kerberos.csd.net
204.181.152.28	A+PTR	arete.csd.net
204.181.152.28	A	ns2.csd.net
204.181.152.44	A	herdtracker.biz
204.181.152.45	A	www.yorkcoinclub.org
204.181.152.45	A	tidewatercoinclub.org
204.181.152.45	A	tlcc.info
204.181.152.50	A	apollo.csd.net
204.181.152.51	A+PTR	hermes.csd.net
204.181.152.51	A	ns1.csd.net
204.181.152.54	A	www.coinbooks.com
204.181.152.100	A+PTR	thetis.csd.net
204.181.152.100	A	coloradotraining.com
204.181.152.100	A	www.arapahoe.edu
204.181.152.101	A	ssl.boulder.net
204.181.152.109	PTR	kalliope.csd.net
204.181.152.109	A	www.coinlibrary.com
204.181.152.109	A	www.wfbc.org
204.181.152.110	PTR	mars.csd.net
204.181.152.110	A	www.cantelow.com
204.181.152.110	A	cantelow.com
204.181.152.120	A	pwdocs.csd.net
204.181.152.123	A	hermes123.csd.net
204.181.152.132	A	hermes132.csd.net
204.181.152.140	A+PTR	atlas.csd.net
204.181.152.140	A	smtp.csd.net
204.181.152.140	A	boulder.net
204.181.152.141	A	cronus.csd.net