Robtex

Up: 72.20.128.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 72.20.128.0/20
Down right: 72.20.144.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.20.128.30	PTR	ns1.cfisd.net
72.20.129.58	A	lock.technology
72.20.129.60	A	rocketmco.com
72.20.129.83	A+PTR	mail.trenddevelopment.com
72.20.129.83	A	mail.poco-bueno.com
72.20.129.83	A	mail.jbecpa.com
72.20.129.93	A	ip3app.com
72.20.129.98	PTR	scimail01.seismiccity.com
72.20.129.98	A	ns1.seismiccity.com
72.20.129.98	A	ns2.seismiccity.com
72.20.129.250	A	mail.apluscommunication.com
72.20.129.252	PTR	mail.tri-starpetroleum.com
72.20.129.252	A	mail.apluscommunication.com
72.20.129.252	A	mail.kronosminerals.com
72.20.130.29	A	mywhirlwindsteel.com
72.20.130.32	PTR	72-20-130-32.phonoscope.com
72.20.130.34	PTR	72-20-130-34.phonoscope.com
72.20.130.64	PTR	72-20-130-64.cgg.com
72.20.130.166	A	harriscountycheckrecovery.com
72.20.130.190	A	mail.acmlogistics.com
72.20.130.250	A	ns1.advrealtime.com
72.20.131.5	A	mx3.techradium.com
72.20.131.22	A	mx1.techradium.com
72.20.131.43	A	mx5.techradium.com
72.20.131.43	A	ns11.techradium.net
72.20.131.43	A	*.techradium.net
72.20.131.77	A	mail.runpunchstudios.com
72.20.131.77	A	*.runpunchstudios.com
72.20.131.100	A	nexbillpayalert.com
72.20.132.6	A	gwtools.dickinsonisd.org
72.20.132.6	A	mail.dickinsonisd.org
72.20.132.9	A	mail2.dickinsonisd.org
72.20.132.16	A	pda.dickinsonisd.org
72.20.133.4	PTR	www.pearlandisd.org
72.20.133.20	A	ns2.phonoscope.com
72.20.133.21	A	ns3.phonoscope.com
72.20.133.36	A	gw.hitchcockisd.org
72.20.133.53	A	hisd-grade.hitchcockisd.org
72.20.133.54	A	library.hitchcockisd.org
72.20.133.55	A	odyssey.hitchcockisd.org
72.20.133.74	A	dlx-b17.texmemsys.com
72.20.133.89	A	dpe-d37.texmemsys.com
72.20.133.100	A+PTR	mail.tti-corp.com
72.20.133.100	A	*.tti-corp.com
72.20.133.100	A	www.tti-corp.com
72.20.133.103	PTR	shop.tifco.com
72.20.133.106	PTR	mail01.tti-corp.com
72.20.133.153	A	dts.sorcer.com
72.20.133.181	A	freedomalloys.com
72.20.133.181	A	www.freedomalloys.com
72.20.134.2	PTR	2.vendorsafe.com
72.20.134.2	A	ns0.iwaterways.com
72.20.134.4	A	isg1000-a.netsurion.com
72.20.134.4	A	isg1000-a.vendorsafe.com
72.20.134.5	A	ns2.iwaterways.com
72.20.134.35	PTR	35.vendorsafe.com
72.20.134.35	A	prxy.c.mxof.com
72.20.134.35	A	interstatecontrols.com.b.mxof.com
72.20.134.64	PTR	redirector.aerohive.com
72.20.134.131	PTR	131.vendorsafe.com
72.20.134.160	PTR	160.vendorsafe.com
72.20.134.161	PTR	161.vendorsafe.com
72.20.134.192	PTR	192.vendorsafe.com
72.20.134.194	PTR	194.vendorsafe.com
72.20.134.205	A	ns4.vsti.org
72.20.134.224	PTR	224.vendorsafe.com
72.20.134.225	PTR	225.vendorsafe.com
72.20.134.226	PTR	226.vendorsafe.com
72.20.134.236	A	hcesd60.org
72.20.135.69	PTR	mail.choiceenergy.com
72.20.135.69	A	elitebrokers.net
72.20.135.69	A	mail.blackbarrelenergy.com
72.20.135.164	A	pixmfa.phonoscope.com
72.20.135.197	A+PTR	barracuda.ci.friendswood.tx.us
72.20.135.197	A	mail.ci.friendswood.tx.us
72.20.135.197	A	cof-exchange.ci.friendswood.tx.us
72.20.135.217	PTR	ftp.swiftenergy.com
72.20.136.84	A	blueskydev.net
72.20.136.85	PTR	mail.kenmontcap.com
72.20.136.85	A	mail.blueskydev.net
72.20.136.131	A+PTR	hcdevpn.hcde-texas.org
72.20.136.141	PTR	webmail.hcde-texas.org
72.20.136.142	A+PTR	ns7.hcde-texas.org
72.20.136.149	A	ns6.hcde-texas.org
72.20.136.154	A	whatishcde.net
72.20.136.160	A+PTR	mail-gateway.hcde-texas.org
72.20.136.161	A	hcdeonline.hcde-texas.org
72.20.136.169	PTR	tms.hcde-texas.org
72.20.136.169	A	via-tx.com
72.20.136.169	A	houstonp16council.com
72.20.136.174	A	via-tx.com
72.20.137.26	A	fronterrageosciences.com
72.20.137.36	A	mail.apnix.net
72.20.137.101	A	huddlestonco.com
72.20.137.101	A	mail.huddlestonco.com
72.20.137.101	A	*.huddlestonco.com
72.20.137.137	A	scjrq.com
72.20.137.137	A	www.hd.co.harris.tx.us
72.20.137.137	A	hd.co.harris.tx.us
72.20.137.212	A	email.seanamic.com
72.20.137.212	A	email.hl-tech.net
72.20.137.212	A	mail.geocables.com
72.20.138.4	A	scriptassure.com
72.20.138.61	A	wearesj.com
72.20.138.61	A	wearesj.net
72.20.138.61	A	wearesj.org
72.20.138.62	PTR	gw.spa1000.com
72.20.138.62	A	francis.strakejesuit.org
72.20.138.167	A	members.hfbc.org
72.20.138.171	A+PTR	mail.hfba.org
72.20.138.172	A	mail2.hfba.org
72.20.138.180	A	smtp.hfbc.org
72.20.138.186	A	smtp.hfbc.org
72.20.138.236	A+PTR	mail.etoco.com
72.20.138.236	A	remote.etoco.com
72.20.139.137	A	ccisdmail03.ccisd.net
72.20.139.138	A	ccisdmail04.ccisd.net
72.20.139.140	A	my.ccisd.net
72.20.139.144	A	sec06.ccisd.net
72.20.139.177	A+PTR	eduphoria.ccisd.net
72.20.140.61	A	mail.video-insight.com
72.20.140.61	A	mail.liquidcampussecurity.com
72.20.140.73	A+PTR	barracudamail.cityofwebster.com
72.20.140.73	A	mail.cityofwebster.com
72.20.140.83	A	mail.nassaubay.com
72.20.140.84	A	mail1.nassaubay.com
72.20.140.155	PTR	astros.modec.com
72.20.140.156	PTR	astros.modec.com
72.20.141.22	A	mail.pmoseley.com
72.20.141.36	PTR	vsa.txgrp.com
72.20.141.38	PTR	titan.txgrp.com
72.20.141.44	A+PTR	tritechtx.com
72.20.141.44	PTR	mail.tritechtx.com
72.20.141.45	A	mail.tritechtx.com
72.20.141.45	A	mail.tri-tech-surveying.com
72.20.141.52	A	pixjobit.phonoscope.com
72.20.141.80	A	mail.lpisd.org
72.20.141.85	A	ftp.lpisd.org
72.20.141.94	A	igprojh.lpisd.org
72.20.141.164	A	gw.mfah.org
72.20.141.165	PTR	mail.mfah.org
72.20.141.165	A	static.mfah.com
72.20.141.165	A	mfah.org
72.20.141.166	PTR	acd.mfah.org
72.20.141.211	A	mail.deltasteel.com
72.20.141.212	A	ftp.deltasteel.com
72.20.142.25	A	mail.urinternational.com
72.20.142.25	A	smtp.urinternational.com
72.20.142.26	A	demo.urinternational.com
72.20.142.29	A	urinternational.com
72.20.142.146	A	mail.terryfoundation.org
72.20.142.147	A	terryfoundation.org
72.20.142.155	A	catalyst.cdtech.com
72.20.142.181	A	mail2.aesbus.com
72.20.142.181	A	mail.aesbus.com
72.20.142.181	A	*.aesbus.com
72.20.143.45	A	mail.upstreamenergy.com
72.20.143.80	PTR	ns.hess.com
72.20.143.80	A	hessmall.com
72.20.143.80	A	roustabout.com
72.20.143.91	PTR	mailhost1.hess.com
72.20.143.99	A	viewstatementsonline.com
72.20.143.134	PTR	mail.oneillhill.com
72.20.143.157	A	mail.bayouonthebend.com
72.20.143.213	A+PTR	mail.koalacenters.com
72.20.143.213	A	mail.koalacenters.us
72.20.143.250	A	mail.iegdemo.net
72.20.143.250	A	iegdemo.net
72.20.146.130	A+PTR	cpe-72-20-146-130.cmts2.phonoscopecable.net
72.20.146.130	A	com-exch-02.com.edu
72.20.146.132	A	mailto.com.edu
72.20.146.133	A	webmail.com.edu
72.20.146.163	A	de-old.com.edu
72.20.146.165	A	beta.com.edu
72.20.146.187	A	cpe-72-20-146-187.cmts2.phonoscopecable.net
72.20.146.187	A	vpnportal.com.edu
72.20.146.241	A	ns.com.edu
72.20.146.243	A	online.com.edu
72.20.146.245	A	comcat.com.edu
72.20.146.246	A	ezproxy.com.edu
72.20.147.85	A	cpe-72-20-147-85.cmts2.phonoscopecable.net
72.20.147.239	A	cpe-72-20-147-239.cmts2.phonoscopecable.net
72.20.147.255	A	cpe-72-20-147-255.cmts2.phonoscopecable.net
72.20.148.3	A	smtp.erfw.net
72.20.148.3	A	mail.erfwireless.net
72.20.148.3	A	mail.erfw.net
72.20.148.23	A	natest.fmcti.com
72.20.148.52	A	ns4.fmcti.com
72.20.148.52	A	ns3.fmcti.com
72.20.148.52	A	ns3.fmcti.com.lb-fmcti.com
72.20.148.138	A	myaccount.erfw.net
72.20.149.255	A	cpe-72-20-149-255.cmts2.phonoscopecable.net
72.20.150.26	A	server.airflowtx.com
72.20.150.45	A+PTR	mail.pantetech.com
72.20.150.87	A	videoconf.phillipsakers.com
72.20.150.88	A	webmail.phillipsakers.com
72.20.150.90	A	voicemail.phillipsakers.com
72.20.150.108	A	gw.wealthcareassetmgmt.com
72.20.150.133	A+PTR	mail.x-analog.com
72.20.150.133	A	x-analog.com
72.20.150.134	A	cpvaughn.com
72.20.150.146	A	jancapro.com
72.20.150.228	A	s2.jmmllp.com
72.20.150.229	A	s1.jmmllp.com
72.20.150.245	A	mail.mcorealty.com
72.20.150.245	A	mail.mxminc.com
72.20.151.137	A	cpe-72-20-151-137.cmts8.phonoscopecable.net
72.20.151.255	A	cpe-72-20-151-255.cmts8.phonoscopecable.net
72.20.153.2	PTR	72-20-153-2.gccisd.phonoscope.com
72.20.153.2	A	webserver.gccisd.net
72.20.153.2	A	gccisd.net
72.20.153.3	PTR	72-20-153-3.gccisd.phonoscope.com
72.20.153.3	A	mail.gccisd.net
72.20.153.10	A	smtp.gccisd.net
72.20.153.33	A	teams.gccisd.net
72.20.153.42	A	gcdns01.gccisd.net
72.20.154.6	A+PTR	dns01.dnsparkhere.com
72.20.154.7	A+PTR	dns02.dnsparkhere.com
72.20.154.8	A	dns01.tech-stars.com
72.20.154.9	A	smtp02.houhost.com
72.20.154.43	A	mx02.pcmarys.net
72.20.154.43	A	marysbridal.mobi
72.20.154.43	A	karelinasposa.info
72.20.154.82	A	internationalsaverscorp.com
72.20.154.82	A	bsclb.com
72.20.154.82	A	insurancesavingscorp.com
72.20.154.85	A	mail.providentamerican.com
72.20.154.96	A	4banner.com
72.20.154.97	A	art-studio.com
72.20.154.98	A	studio500.com
72.20.154.99	A	tech-stars.com
72.20.154.138	A	psisconsulting.com
72.20.154.138	A	geowebnews.com
72.20.154.138	A	www.geowebservices.com
72.20.154.144	PTR	glorypress.com
72.20.154.160	PTR	mail.houstonwebdesign.net
72.20.154.160	A	www.cosmeticdentistshouston.com
72.20.154.160	A	mail.bocacoldlaser.com
72.20.154.161	PTR	mail.softscience.com
72.20.154.218	PTR	72-20-154-218.static.webglue.net
72.20.154.218	A	mu.fanoozle.com
72.20.154.218	A	*.john.mu.fanoozle.com
72.20.154.224	A	72-20-154-224.static.webglue.net
72.20.155.5	A	webctrl.fisdk12.net
72.20.155.14	A	byod.fisdk12.net
72.20.155.35	A+PTR	ls1.fisdk12.net
72.20.155.155	PTR	blue.fisdk12.net
72.20.155.159	A+PTR	sta0.fisdk12.net
72.20.155.160	A+PTR	pam1.fisdk12.net
72.20.155.162	A	sync.fisdk12.net
72.20.156.5	A	secure.lcisd.org
72.20.156.5	A	skinner.lcisd.org
72.20.156.6	A	skinner2.lcisd.org
72.20.156.76	A	skyward.lcisd.org
72.20.156.80	A	www.lcisd.org
72.20.156.80	A	lcisd.org
72.20.157.20	A	mail.doubletalk.net
72.20.157.25	A	smtp1.doubletalk.net
72.20.157.99	A	mail.m3law.com
72.20.158.221	A	cameronenrollment.com
72.20.158.222	A	onesubseaenrollment.com
72.20.158.224	A	cameronwellness.com
72.20.158.225	A	onesubseawellness.com
72.20.159.51	PTR	ftp.laportetx.gov
72.20.159.51	PTR	www.laportetx.gov
72.20.159.51	PTR	ftp.ci.la-porte.tx.us
72.20.159.114	A	remote.mectx.com