Robtex

Up: 51.81.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 51.81.128.0/18
Down right: 51.81.192.0/18
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
51.81.130.1	A	save10percent.net
51.81.131.129	A	slpmx.com
51.81.131.142	A	www.animalremovalandmore.com
51.81.131.192	PTR	ip192.ip-51-81-131.us
51.81.131.192	A	greekdishesbynausika.com
51.81.131.192	A	registry2.1.quietfountain.com
51.81.133.0	A	calie.org
51.81.133.130	PTR	ip130.ip-51-81-133.us
51.81.133.186	A	myfirstsexteacher.us
51.81.133.244	A	sexvideox.net
51.81.134.37	A	russiansex.info
51.81.134.49	A	scaleitco.com
51.81.134.77	A	pornhub5.com
51.81.134.79	A	more-lesbian.com
51.81.135.9	A	xnxxsex.org
51.81.135.13	A	younggayporn.net
51.81.135.83	A	saem.co.in
51.81.135.113	A	gothchicks.net
51.81.136.109	A	japanesexy.com
51.81.137.66	PTR	ip66.ip-51-81-137.us
51.81.137.147	PTR	ip147.ip-51-81-137.us
51.81.137.177	A	mx1106.weboperations.net
51.81.137.198	A	mail.pc-logix.com
51.81.137.224	A	edu.ink
51.81.138.0	A	ns20.webmasters.com
51.81.138.0	A	webmail.squanconstruction.com
51.81.138.14	A	diprato.com
51.81.138.35	A	55-a.webmasters.com
51.81.139.40	A	mail.enchantedattire.com
51.81.139.251	PTR	smtp.host1782.idealcuisines.com
51.81.141.100	A	internetmodeling.com
51.81.142.55	A	vicolinker.net
51.81.142.81	PTR	hl1.hlinkservers.xyz
51.81.142.221	A	grillo-leaks.com
51.81.144.1	A	mail.seltzerworks.com
51.81.144.15	A	odns2.osiriscomm.com
51.81.149.64	A	ns2.dbcmobile.com.br
51.81.149.72	PTR	ip72.ip-51-81-149.us
51.81.150.75	PTR	hml01.clicket.info
51.81.151.166	PTR	ns2.server351.iseencloud.com
51.81.151.210	A	suncoastzanzibartours.com
51.81.152.36	A	robertoreyna.com
51.81.152.36	A	notimundord.com
51.81.152.36	A	euromariela.com
51.81.152.54	PTR	voyager-c.vis-hosting.com
51.81.153.58	A	asl-ofc-msoffice.com
51.81.153.84	A	asir.cjb.net
51.81.153.84	A	internetclinic.cjb.net
51.81.153.84	A	kissadvice.cjb.net
51.81.153.197	A	admobilex.com
51.81.154.40	A	cdn-us-o101.pornone.com
51.81.154.55	A	s3.tebi.io
51.81.154.86	A	ediselita.com
51.81.154.140	PTR	server.cpuenterprises.com
51.81.154.177	A	zil.farm
51.81.164.182	PTR	ip182.ip-51-81-164.us
51.81.165.131	A	smsseva.com
51.81.165.158	PTR	ip158.ip-51-81-165.us
51.81.171.54	A	filmy-porno.org
51.81.171.62	A	maturemegafuck.com
51.81.172.219	PTR	ip219.ip-51-81-172.us
51.81.174.80	PTR	smtp.host1783.idealcuisines.com
51.81.174.82	PTR	smtp.host1784.idealcuisines.com
51.81.174.86	PTR	smtp.host1786.idealcuisines.com
51.81.174.128	A	downloads.ziddu.com
51.81.174.128	A	ziddu.com
51.81.174.230	PTR	web-nola1.rootpal.com
51.81.176.222	A	chaulet.ru
51.81.178.92	PTR	dns2.cloud-hoston.com.br
51.81.178.121	A	mexiserver.org
51.81.178.121	A	radioretro.com.mx
51.81.178.129	PTR	mail.redconnet.com
51.81.182.253	PTR	s01-pdx.lumouscloud.net
51.81.182.255	PTR	ip255.ip-51-81-182.us
51.81.185.125	PTR	hil1-relay.sendergen.com
51.81.185.211	PTR	ns1008416.ip-51-81-185.us
51.81.186.86	PTR	vps-4ed4e57c.vps.ovh.us
51.81.186.170	A	leedao.com
51.81.186.201	A	dl2.wireshark.net
51.81.186.219	A	borneoartifact.com
51.81.187.26	A	az2.org
51.81.188.11	A	*.brawash0.soup.io
51.81.188.11	A	getguru.soup.io
51.81.188.11	A	colony6detail.soup.io
51.81.188.63	PTR	new.stgabriels.church
51.81.190.5	PTR	web-volt1.rootpal.com
51.81.190.6	PTR	ip6.ip-51-81-190.us
51.81.192.180	A	ns2.katycompanies.com
51.81.193.73	A	blrbt.com
51.81.193.200	PTR	ip200.ip-51-81-193.us
51.81.193.215	PTR	ip215.ip-51-81-193.us
51.81.198.226	A	atebits.com
51.81.202.78	PTR	nvmeusa1.cloudprivatedns.net
51.81.203.8	PTR	hpdesignjet750.club
51.81.203.81	PTR	mail.thnol.com
51.81.205.32	A	scrapdigest.com
51.81.205.39	A	pvplive.net
51.81.205.45	A	ultraimg.com
51.81.206.211	PTR	ip211.ip-51-81-206.us
51.81.206.212	PTR	ip212.ip-51-81-206.us
51.81.207.8	PTR	barraca.phcco.com
51.81.208.116	PTR	web-wave.rootpal.com
51.81.209.9	PTR	underseadrifting.info
51.81.209.130	PTR	nvmewest.cloudprivatedns.net
51.81.210.145	PTR	vps-c6156548.vps.ovh.us
51.81.214.216	PTR	weborange.com
51.81.214.243	PTR	ip243.ip-51-81-214.us
51.81.215.145	A	ns2.nethostingsac.com
51.81.217.130	PTR	ip130.ip-51-81-217.us
51.81.224.98	A	www.peliton.net
51.81.224.141	PTR	gigante.nano-servidor.rio.br
51.81.224.141	A	ns1.megaredehost.com.br
51.81.224.145	A+PTR	ip145.ip-51-81-224.us
51.81.224.145	A	theultracubes.com
51.81.224.167	PTR	www.garagedoorrepairstmichael.com
51.81.224.167	A	garagedoorrepairstmichael.com
51.81.224.173	PTR	www.garagedoorrepairfarmington.com
51.81.226.32	PTR	ultra.ownmyserver.com
51.81.226.32	A	worldonlinesolutions.com
51.81.226.32	A	prideoverseas.com
51.81.226.33	PTR	ultra.ownmyserver.com
51.81.226.34	PTR	ultra.ownmyserver.com
51.81.226.35	PTR	ultra.ownmyserver.com
51.81.227.120	A+PTR	ip120.ip-51-81-227.us
51.81.227.120	A	zonecloudastra.com
51.81.227.224	PTR	mars.hostcloudstore.com
51.81.227.224	A	garminupdatecenter.com
51.81.227.224	A	mail.garminupdatecenter.com
51.81.227.225	PTR	ns11.hostcloudstore.com
51.81.227.226	PTR	ns12.hostcloudstore.com
51.81.228.4	A+PTR	ip4.ip-51-81-228.us
51.81.228.4	A	goodtogomortgage.com
51.81.228.5	PTR	ip5.ip-51-81-228.us
51.81.228.5	A	ns1.historicvending.com
51.81.228.5	A	ns2.historicvending.com
51.81.228.153	A+PTR	ip153.ip-51-81-228.us
51.81.228.153	A	attachcraft.com
51.81.229.12	PTR	educacionejecutivos.com
51.81.229.13	A	ieisystems.com
51.81.229.33	A+PTR	ip33.ip-51-81-229.us
51.81.229.33	A	247womens.com
51.81.229.35	PTR	ip35.ip-51-81-229.us
51.81.229.35	A	thebillcruncher.com
51.81.229.155	A+PTR	ip155.ip-51-81-229.us
51.81.229.155	A	mail.buykratomstock.com
51.81.229.155	A	buykratomstock.com
51.81.229.156	A+PTR	altis.thetrailerpark.us
51.81.229.157	PTR	ip157.ip-51-81-229.us
51.81.230.47	A+PTR	ip47.ip-51-81-230.us
51.81.230.47	A	ns1.greexta.com
51.81.230.47	A	greexta.com
51.81.230.133	A+PTR	ip133.ip-51-81-230.us
51.81.230.133	A	paper-io.site
51.81.230.133	A	ns1.paper-io.site
51.81.230.135	PTR	ip135.ip-51-81-230.us
51.81.232.0	A+PTR	ns94.webmasters.com
51.81.232.0	A	mail.xnx.com
51.81.232.1	A	deathbydyeing.org
51.81.232.18	A	urb-garden.com
51.81.232.158	A+PTR	ip158.ip-51-81-232.us
51.81.232.158	A	kratomfunlife.com
51.81.232.158	A	mail.kratomfunlife.com
51.81.232.159	PTR	ip159.ip-51-81-232.us
51.81.232.159	A	mail.kratomfunusa.com
51.81.232.161	PTR	ip161.ip-51-81-232.us
51.81.232.162	PTR	ip162.ip-51-81-232.us
51.81.233.184	A	dc-5149d08f4c5b.videos.com
51.81.233.184	A	ns79.webmasters.com
51.81.233.188	PTR	ip188.ip-51-81-233.us
51.81.233.188	A	kamapechasesex.videos.com
51.81.233.188	A	jokes.videos.com
51.81.236.60	PTR	ip60.ip-51-81-236.us
51.81.236.60	A	ava-host.com
51.81.236.60	A	ava-hosting.com
51.81.236.179	A+PTR	ip179.ip-51-81-236.us
51.81.236.179	A	vegasdaveshop.com
51.81.236.180	A+PTR	ip180.ip-51-81-236.us
51.81.236.180	A	www.trustedcontest.com
51.81.236.201	PTR	ip201.ip-51-81-236.us
51.81.237.102	PTR	mx2.atabyte.net
51.81.238.1	A+PTR	ip1.ip-51-81-238.us
51.81.238.1	A	joeybforsenate2020.com
51.81.238.1	A	varietyfoxstore.com
51.81.238.3	PTR	ip3.ip-51-81-238.us
51.81.238.4	PTR	ip4.ip-51-81-238.us
51.81.238.5	PTR	ip5.ip-51-81-238.us
51.81.238.177	A+PTR	ip177.ip-51-81-238.us
51.81.238.177	A	x9xs.com
51.81.238.178	A	u.nf
51.81.238.217	A+PTR	ip217.ip-51-81-238.us
51.81.238.227	PTR	ip227.ip-51-81-238.us
51.81.239.168	A+PTR	ip168.ip-51-81-239.us
51.81.239.168	A	theparadigmresume.com
51.81.239.168	A	mail.theparadigmresume.com
51.81.239.173	A+PTR	ip173.ip-51-81-239.us
51.81.239.176	PTR	manage1.em6logistics.com
51.81.239.179	PTR	ip179.ip-51-81-239.us
51.81.240.8	A+PTR	ip8.ip-51-81-240.us
51.81.240.8	A	quadrosoluciones.com
51.81.240.39	A+PTR	ip39.ip-51-81-240.us
51.81.240.39	A	ns6.thewebhostbox.com
51.81.240.49	PTR	ip49.ip-51-81-240.us
51.81.240.145	A+PTR	ip145.ip-51-81-240.us
51.81.240.177	PTR	mail.eurisko.ws
51.81.240.212	PTR	www.oftalmosalud.net
51.81.240.212	A	oftalmosalud.net
51.81.240.240	PTR	ip240.ip-51-81-240.us
51.81.240.240	A	mail.nattycomm.com
51.81.240.240	A	nattycomm.com
51.81.241.43	A	linuxserver.shinedezign.com
51.81.241.80	A+PTR	ar80.hostsrv.org
51.81.241.80	A	ns1.agenciadonald.com.br
51.81.241.81	PTR	ip81.ip-51-81-241.us
51.81.241.81	A	ar2.hostsrv.org
51.81.241.83	PTR	ip83.ip-51-81-241.us
51.81.242.59	A	mx03.oxsus-vadesecure.net
51.81.242.150	A	mx04.oxsus-vadesecure.net
51.81.243.5	A	pmh.cl
51.81.243.12	PTR	server.cloud-hoston.com.br
51.81.243.12	A	ns2.hoservers.com.br
51.81.243.12	A	vivendobauru.com.br
51.81.243.140	A	s3.tebi.io
51.81.244.196	PTR	server.idevdirect.com
51.81.244.230	PTR	ns1003899.ip-51-81-244.us
51.81.245.2	A+PTR	ns106914.ip-51-81-245.us
51.81.245.2	A	241sa.0707cdn.com
51.81.245.15	A	lst.law
51.81.245.16	A	241uk.0707cdn.com
51.81.245.19	A	241uk.0707cdn.com
51.81.245.20	A	241uk.0707cdn.com
51.81.245.21	A	241uk.0707cdn.com
51.81.245.35	A	241uk.0707cdn.com
51.81.245.148	A	vgtvon2.com
51.81.245.159	A	colbyknox.com
51.81.245.184	A	beamer.rip
51.81.245.234	A	milordcasa.com.tw
51.81.246.143	A+PTR	ip143.ip-51-81-246.us
51.81.246.143	A	tydalmc.com
51.81.246.222	A+PTR	ip222.ip-51-81-246.us
51.81.246.222	A	preblacve.com
51.81.247.1	A+PTR	ip1.ip-51-81-247.us
51.81.247.5	A+PTR	mail.fluxnode.io
51.81.247.88	A+PTR	premium9-pp1.pinpointlocalhosting.com
51.81.248.129	PTR	ip129.ip-51-81-248.us
51.81.248.129	A	davidjentauctions.com
51.81.248.129	A	dreammakerweddings.net
51.81.248.134	PTR	ip134.ip-51-81-248.us
51.81.248.135	PTR	ip135.ip-51-81-248.us
51.81.249.23	PTR	ip23.ip-51-81-249.us
51.81.249.114	A	fr.freepik.com
51.81.249.114	A	ru.freepik.com
51.81.249.114	A	jp.freepik.com
51.81.250.16	A	mail.zapcam.com
51.81.250.19	A	dns4.webmasters.com
51.81.250.21	A	mail.onlinechat.com
51.81.250.21	A	mail.bf.com
51.81.250.40	PTR	ip40.ip-51-81-250.us
51.81.250.81	A	241sa.0707cdn.com
51.81.250.82	A	241sa.0707cdn.com
51.81.250.83	A	241sa.0707cdn.com
51.81.250.84	A	241sa.0707cdn.com
51.81.250.85	A	241sa.0707cdn.com
51.81.250.128	PTR	web-wave.rootpal.com
51.81.251.21	A	oldmanfuck.net
51.81.251.23	A	milfpornhd.net
51.81.251.59	A+PTR	ip59.ip-51-81-251.us
51.81.251.59	A	jnvlegal.com
51.81.251.60	PTR	ip60.ip-51-81-251.us
51.81.251.130	A+PTR	ip130.ip-51-81-251.us
51.81.251.162	A+PTR	ip162.ip-51-81-251.us
51.81.251.162	A	server-ovh105885-relay.screenconnect.com
51.81.251.165	A	apaginadistribuidora.com.br
51.81.252.0	A	ns102a.avahost.net
51.81.252.0	A	ns1010a.avahost.net
51.81.252.0	A	ns274a.avahost.net
51.81.252.13	PTR	ip13.ip-51-81-252.us
51.81.252.84	PTR	mx19.s.smtp-out.byo-email.com
51.81.252.139	PTR	ip139.ip-51-81-252.us
51.81.253.34	A	www.vldeo.bf.com
51.81.253.34	A	bf.com
51.81.253.34	A	www.xxx.bf.com
51.81.253.164	A+PTR	wellman.capitalassetssite.com
51.81.253.164	A	ns1.capitalassetssite.com
51.81.253.164	A	capitalassetssite.com
51.81.253.165	A+PTR	oodles.capitalassetssite.com
51.81.253.195	PTR	ip195.ip-51-81-253.us
51.81.253.213	PTR	ferk-oucan.grindpet.net
51.81.254.52	A	ip52.ip-51-81-254.us
51.81.254.52	A	vaycy.com
51.81.254.253	A+PTR	ip253.ip-51-81-254.us
51.81.254.253	A	login.iptvcompany.org
51.81.255.123	A	pornofans.net
51.81.255.126	A	usaporno.net
51.81.255.128	PTR	ns9.nethostingsac.com
51.81.255.130	PTR	srv.otarvasq.com
51.81.255.158	A+PTR	ip158.ip-51-81-255.us
51.81.255.158	A	ns1.konnectera.com
51.81.255.158	A	konnectera.com
51.81.255.159	PTR	ip159.ip-51-81-255.us
51.81.255.159	A	ns2.konnectera.com