Robtex

Up: 192.5.0.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 192.5.4.0/23
Down right: 192.5.6.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.5.4.1	A	k.nic.rs
192.5.4.1	A	ns5.cacert.net
192.5.4.1	A	ns-g2.bitnames.com
192.5.4.2	PTR	d.ext.nic.fr
192.5.4.144	A	rc-red.sql1.isc.org
192.5.4.146	A	rc-red.f2.sql1.isc.org
192.5.4.148	A	rc-red.r1.sql1.isc.org
192.5.4.151	A	as112.sql1.isc.org
192.5.4.159	A	bcast.rc-red.sql1.isc.org
192.5.4.180	A	ims-gw.isc.org
192.5.4.208	A	red.pao1.isc.org
192.5.4.209	A	exit.red.pao1.isc.org
192.5.4.223	A	bcast.red.pao1.isc.org
192.5.4.242	A	6to4.sql1.isc.org
192.5.5.29	A	hsad3.hanshinc.com
192.5.5.30	A	hsad0.hanshinc.com
192.5.5.39	A	hsad3.hanshinc.com
192.5.5.113	A	hanshinc.com
192.5.5.241	A+PTR	f.root-servers.net
192.5.5.241	A	555xt.meibu.com
192.5.5.241	A	usec-nst.pokerstars.com
192.5.6.1	A	gw.a.nstld.com
192.5.6.9	A	vrrp.a.nstld.com
192.5.6.10	A	igw1.a.nstld.com
192.5.6.11	A	igw2.a.nstld.com
192.5.6.30	PTR	a.gtld-servers.net
192.5.6.30	A	*.are-we-having-fun-yet-jamom.htmles-backstabbing-liar-gilliland.dfcloan.com
192.5.6.30	A	*.com.htmlu-try-to-be-friends-robert-backstabbing-liar-st.htmlanley.dfcloan.com
192.5.6.31	PTR	a2.nstld.com
192.5.6.32	PTR	a3.nstld.com
192.5.6.32	A+PTR	chia.arin.net
192.5.6.33	PTR	a4.nstld.com
192.5.6.33	A	srv1-parkhyattmarrakesh.ma
192.5.6.33	A	srv1-mag-lite.ma
192.5.6.34	PTR	ns1.dnsmanaged.com
192.5.6.35	PTR	a6.nstld.com
192.5.6.36	PTR	a.edu-servers.net
192.5.6.36	A	a7.nstld.com
192.5.6.37	PTR	a8.nstld.com
192.5.6.38	PTR	a9.nstld.com
192.5.6.39	A+PTR	a10.nstld.com
192.5.7.120	A	hanshinc.com
192.5.7.120	A	hsad.hanshinc.com