Robtex

Up: 212.113.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 212.113.0.0/20
Down right: 212.113.16.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.113.0.0	PTR	unknown.level3.net
212.113.0.1	A+PTR	ns1.eu.level3.net
212.113.0.2	A+PTR	ns2.eu.level3.net
212.113.0.3	A+PTR	resolver1.eu.level3.net
212.113.0.4	A	resolver2.eu.level3.net
212.113.0.254	A	angua.eu.level3.net
212.113.1.2	PTR	unknown.level3.net
212.113.1.28	A	www.levelthree.co.uk
212.113.1.45	A	newsfeed4.eu.level3.net
212.113.1.64	PTR	unknown.level3.net
212.113.2.3	PTR	unknown.level3.net
212.113.2.15	A	lo-0.bbr1.paris1.level3.net
212.113.2.16	A	lo-0.bbr2.paris1.level3.net
212.113.2.16	A	bbr2.paris1.level3.net
212.113.2.17	A	mp1.amsterdam1.level3.net
212.113.2.32	PTR	unknown.level3.net
212.113.2.64	PTR	unknown.level3.net
212.113.2.65	PTR	unknown.level3.net
212.113.2.138	A	news-peer.eu.level3.net
212.113.2.139	A	newspull.london1.eu.level3.net
212.113.2.141	A	ns1.london1.eu.level3.net
212.113.2.144	A	resolver2.london1.eu.level3.net
212.113.2.161	PTR	vpn1.london1.level3.net
212.113.2.166	A	l3lon2mail01.level3.com
212.113.2.167	A	n0500lon2.level3.com
212.113.2.168	A	n0501lon2.level3.com
212.113.2.169	A	n0502lon2.level3.com
212.113.3.37	A	olcsc.level3.co.uk
212.113.3.37	A	viewzap.eu.level3.net
212.113.5.9	A	privilegeonline.com
212.113.5.9	A	myprivilege.co.uk
212.113.5.10	A	info.directlinegroup.com
212.113.5.13	A	ns.directline.com
212.113.5.38	A+PTR	mx02.htbplc.co.uk
212.113.5.39	PTR	unknown.level3.net
212.113.5.39	A	www.htb.co.uk
212.113.5.39	A	htb.co.uk
212.113.5.41	PTR	unknown.level3.net
212.113.5.41	A	privilegeonline.com
212.113.5.41	A	myprivilege.co.uk
212.113.5.42	PTR	unknown.level3.net
212.113.5.42	A	info.directlinegroup.com
212.113.5.102	A	mail.experiensus.com
212.113.5.128	PTR	unknown.level3.net
212.113.5.201	PTR	unknown.level3.net
212.113.7.141	A	r2---sn-a8au-aige.googlevideo.com
212.113.7.141	A	r2---sn-a8au-aige.gvt1.com
212.113.7.142	A	r3.sn-a8au-aige.googlevideo.com
212.113.7.143	A	r4.sn-a8au-aige.c.pack.google.com
212.113.8.22	A	bezeq-inter.edge5.london1.level3.net
212.113.8.34	PTR	dynamic-net.edge4.london1.level3.net
212.113.8.34	A	bezeq-inter.edge6.london1.level3.net
212.113.8.70	A	packet-exch.car1.london1.level3.net
212.113.8.142	A	wildcard-uk.edge6.london1.level3.net
212.113.8.174	A	packet-exch.car1.london1.level3.net
212.113.8.246	A	bezeq-inter.edge6.london1.level3.net
212.113.9.69	A	xe-9-3-2.edge5.london1.level3.net
212.113.9.174	A	virtual-int.ear3.london2.level3.net
212.113.9.186	A	bezeq-inter.edge6.london1.level3.net
212.113.10.32	PTR	unknown.level3.net
212.113.10.66	PTR	mwb6.bbnplanet.net
212.113.10.66	A	neosnetwork.edge3.london1.level3.net
212.113.10.82	A	neosnetwork.edge3.london1.level3.net
212.113.10.98	PTR	level3.rt4.hex.rb.lon.uk.securanetworks.net
212.113.10.105	A	ge-5-1-4-609.edge3.london1.level3.net
212.113.10.106	A	neosnetwork.edge3.london1.level3.net
212.113.10.126	A	redbus-inte.edge3.london1.level3.net
212.113.10.130	A+PTR	serverhouse.ear3.london2.level3.net
212.113.10.177	A	ge-6-2-893.car5.london1.level3.net
212.113.10.192	PTR	unknown.level3.net
212.113.10.194	PTR	unknown.level3.net
212.113.10.202	A	mnet-intern.edge4.london1.level3.net
212.113.10.214	A	mnet-intern.edge4.london1.level3.net
212.113.10.226	A	redbus-inte.edge3.london1.level3.net
212.113.10.250	A	viawest-int.edge4.london1.level3.net
212.113.10.253	A	ge-7-12-1970.car3.london1.level3.net
212.113.10.254	A	level3-1.tch67.lon.datatechuk.net
212.113.11.1	A+PTR	ae8-204.edge3.london1.level3.net
212.113.11.9	A	ge-5-1-6-252.edge4.london1.level3.net
212.113.11.17	A	ge-5-1-1-107.edge3.london1.level3.net
212.113.11.22	A	genetics-li.edge3.london1.level3.net
212.113.11.32	PTR	unknown.level3.net
212.113.11.64	PTR	unknown.level3.net
212.113.11.65	A+PTR	xe-10-2-1.edge3.london1.level3.net
212.113.11.78	A	mnet-intern.edge4.london1.level3.net
212.113.11.86	A	redbus-inte.edge3.london1.level3.net
212.113.11.97	PTR	unknown.level3.net
212.113.11.99	PTR	unknown.level3.net
212.113.11.114	A	ns0.office.packetexchange.net
212.113.11.125	A	ge-5-2-2.edge3.london1.level3.net
212.113.11.129	PTR	unknown.level3.net
212.113.11.131	PTR	unknown.level3.net
212.113.11.134	A	bt-managed.car5.london1.level3.net
212.113.11.163	PTR	unknown.level3.net
212.113.11.226	A+PTR	magrathea-t.car5.london1.level3.net
212.113.12.1	A+PTR	so-6-0-0.edge1.london1.level3.net
212.113.12.2	A	integrated.edge1.london1.level3.net
212.113.12.5	A	ae1-2603.edge3.london15.level3.net
212.113.12.10	A	bezeq-inter.edge1.london1.level3.net
212.113.12.46	A	flag-telecom.hsa2.level3.net
212.113.12.54	A	ld6-r02-04.edge.cloudhelix.io
212.113.12.62	A	telecom-egy.edge3.london1.level3.net
212.113.12.101	A	ge-5-1-8.edge4.london2.level3.net
212.113.12.105	A	5-2-1.ear1.london2.level3.net
212.113.12.121	A	xe-9-0-1.edge3.london1.level3.net
212.113.12.122	A	telecom-egy.edge3.london1.level3.net
212.113.13.2	PTR	unknown.level3.net
212.113.13.35	PTR	unknown.level3.net
212.113.13.97	PTR	unknown.level3.net
212.113.13.128	PTR	unknown.level3.net
212.113.13.130	PTR	unknown.level3.net
212.113.13.192	PTR	unknown.level3.net
212.113.13.194	PTR	unknown.level3.net
212.113.14.25	A	ge-5-1-0.edge4.london1.level3.net
212.113.14.35	PTR	unknown.level3.net
212.113.14.38	A	flag-telecom.ipcolo2.level3.net
212.113.14.50	A	time-warner.edge4.london2.level3.net
212.113.14.54	A	bt-net.hsa1.level3.net
212.113.14.64	PTR	unknown.level3.net
212.113.14.73	A	so-3-0-1.edge1.london2.level3.net
212.113.14.86	A	nymgo-s.a.edge4.london1.level3.net
212.113.14.96	PTR	unknown.level3.net
212.113.14.99	PTR	unknown.level3.net
212.113.14.118	A	google-inc.edge3.london1.level3.net
212.113.14.126	A	verisign-ne.edge4.london1.level3.net
212.113.14.129	PTR	unknown.level3.net
212.113.14.131	PTR	unknown.level3.net
212.113.14.133	A	xe-10-3-3-108.edge4.london1.level3.net
212.113.14.141	A	ge-5-3-0.edge4.london1.level3.net
212.113.14.198	A	mnet-intern.edge4.london1.level3.net
212.113.14.205	A	xe-10-3-3-248.edge4.london1.level3.net
212.113.14.209	A	xe-10-3-3-145.edge4.london1.level3.net
212.113.14.224	PTR	unknown.level3.net
212.113.14.230	A	azzurri-com.edge4.london1.level3.net
212.113.14.233	A	ge-5-2-5.edge4.london1.level3.net
212.113.14.234	A	azzurri-com.edge4.london1.level3.net
212.113.14.241	A	ae8-171.edge3.london1.level3.net
212.113.14.242	A	otkritie-se.edge3.london1.level3.net
212.113.14.250	A	bezeq-inter.edge6.london1.level3.net
212.113.15.77	A	xe-10-2-0.edge3.london1.level3.net
212.113.15.78	A	bezeq-inter.edge3.london1.level3.net
212.113.15.97	A+PTR	ge-5-0-2.edge3.london1.level3.net
212.113.15.98	A+PTR	aci-worldwi.edge3.london1.level3.net
212.113.15.106	PTR	turk-teleko.edge3.london1.level3.net
212.113.15.170	A	redbus-inte.edge3.london1.level3.net
212.113.16.51	A	vpn-lon-51.mforma.com
212.113.16.52	A	vpn-lon-52.mforma.com
212.113.16.53	A	vpn-lon-53.mforma.com
212.113.16.54	A	vpn-lon-54.mforma.com
212.113.16.65	A	lon1.efax.com
212.113.16.180	A	arthur.mforma.com
212.113.16.181	A	colin.mforma.com
212.113.16.182	A	ford.mforma.com
212.113.16.184	A	dirk.mforma.com
212.113.16.195	A	dscharge.com
212.113.16.200	A	virtuachat.com
212.113.16.200	A	www.virtuachat.com
212.113.16.201	A	wegosupport.com
212.113.17.32	PTR	unknown.level3.net
212.113.17.139	A	thetravelapp.mobi
212.113.17.140	A	sydane.com
212.113.17.194	PTR	mail.fd.com
212.113.20.116	A	mrbackup.communicel.com
212.113.20.180	A	maildefer.damazein.com
212.113.20.180	A	mailspool.damazein.com
212.113.20.180	A	*.damazein.com
212.113.20.194	A+PTR	mail2.otcexgroup.com
212.113.20.194	A	mail2.otcex.fr
212.113.20.194	A	mail2.otcexgroup.eu
212.113.20.225	A	testandlearn.net
212.113.20.230	A	mail.torque2.com
212.113.20.230	A	torque2.com
212.113.20.234	A	your-visit.co.uk
212.113.21.4	PTR	ns01lon.ask.co.uk
212.113.21.35	A+PTR	35.refreshmobile.com
212.113.21.35	A	*.me52.com
212.113.21.35	A	me52.com
212.113.21.67	PTR	mail.speakeasycom.com
212.113.21.131	PTR	www.thomson-holidays.com
212.113.21.132	PTR	mailhost.thomson.co.uk
212.113.21.135	A	bb.thomson.co.uk
212.113.21.136	PTR	www.thomson.co.uk
212.113.22.122	A	mailtrap.mforma.com
212.113.22.122	A	benji.mforma.com
212.113.22.123	A	frankie.mforma.com
212.113.22.125	A	realtime.mforma.com
212.113.22.147	A	adconion.emailiq.com
212.113.23.11	A	cdnmedia.info
212.113.23.11	A	contentdeliverynetwork.me
212.113.23.11	A	cdnnetwork.co
212.113.23.24	PTR	test16907.siteconfidence.co.uk
212.113.23.65	PTR	ns.kieser.net
212.113.23.65	A	s1.kieser.net
212.113.23.66	PTR	ns.idr.co.uk
212.113.23.66	A	lloydsbank.org
212.113.23.66	A	www.lloydstsb.biz
212.113.23.102	A	approvedhrservices.com
212.113.23.102	A	flavour-research.com
212.113.23.102	A	mindbench.net
212.113.23.131	A+PTR	listservb.advfn.com
212.113.23.132	A+PTR	listservbr.advfn.com
212.113.23.133	PTR	listserv2.advfn.com
212.113.23.133	A	listservi.advfn.com
212.113.23.134	PTR	listserv.cupidbay.com
212.113.23.136	A	listservf.advfn.com
212.113.25.68	A	interiorplc.com
212.113.25.68	A	www.totty-construction.co.uk
212.113.25.68	A	interiorexterior.eu
212.113.25.90	A	apdaybook.com
212.113.26.50	A	janus.lon.sonymusiconline.com
212.113.26.65	PTR	mail.islhydra.com
212.113.26.65	PTR	www.isluk.com
212.113.26.65	PTR	www.palmcity.co.uk
212.113.28.94	A	mail.yourlocallink.co.uk
212.113.28.98	A	redblackservicedesk.com
212.113.28.110	A+PTR	mail.intandemcommunications.co.uk
212.113.28.110	A	remote.intandemcommunications.co.uk
212.113.28.150	A	www.chooseslscrawford.com
212.113.28.170	A	quartzexperience.co.uk
212.113.28.170	A	axiscollection.com
212.113.28.186	A	bohlin.co.uk
212.113.28.186	A	bohlin.com
212.113.29.3	PTR	www.toshiba-europe.com
212.113.29.10	PTR	www.toshiba.co.uk
212.113.29.150	A	schott.net
212.113.29.195	A	www.victoriass.com
212.113.29.196	A	clarksonsasia.com
212.113.29.218	A	www.post2me.com
212.113.29.218	A	www.myp2m.com
212.113.29.227	A	www.lagboat.com
212.113.29.238	PTR	relay.bis-internet.co.uk
212.113.30.101	PTR	images-hp2.gamespot.co.uk
212.113.30.102	PTR	www.zdnet.co.uk
212.113.30.132	PTR	naranjos.pentacom.co.uk
212.113.31.2	PTR	bs-gw1.sms.co.uk
212.113.31.9	A	mlab1v4.lhr05.measurement-lab.org
212.113.31.9	A	mlab1.lhr05.measurement-lab.org
212.113.31.17	A	ispmon.samknows.mlab1v4.lhr05.measurement-lab.org
212.113.31.50	A	rs.realmedia.com
212.113.31.50	A	wsr.realmedia.com
212.113.31.51	A	oad-admin.realmedia.com
212.113.31.54	A	oad-test.realmedia.com
212.113.31.131	A	outbound.refine-group.com