Robtex

Up: 72.11.64.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 72.11.96.0/20
Down right: 72.11.112.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.11.96.10	A	couriersystems.com
72.11.96.194	A+PTR	mail.toraxmedical.com
72.11.96.250	A	mail.hotdog-vet.com
72.11.96.250	A	mail.vetwarming.com
72.11.96.250	A	mail.augustinebiomedical.com
72.11.97.17	A	donkramer.com
72.11.98.6	A	homeindustry.com
72.11.98.74	PTR	mail.group-1.com
72.11.98.138	A+PTR	mail.exhibitormagazine.com
72.11.98.138	A	mail.exhibitornet.com
72.11.98.138	A	mail.exhibitoronline.com
72.11.98.154	PTR	mail.jlmdesignbuild.com
72.11.98.212	PTR	mail02.omnetics.com
72.11.98.212	A	nano-connectors.com
72.11.98.238	PTR	mail.cuttingedgetile.com
72.11.99.6	PTR	mail.jobview.com
72.11.99.68	A+PTR	mail.yostbaill.com
72.11.99.69	A	snirt.net
72.11.99.122	A+PTR	email.appdev.com
72.11.99.123	PTR	mail2.learnnowonline.com
72.11.100.154	A	mail.sclep.org
72.11.100.154	A	sclep.org
72.11.100.163	A	capexmail.com
72.11.102.54	PTR	mail.qed-inc.com
72.11.102.54	A	qed-inc.com
72.11.102.66	A	sbs.newwavecomponents.com
72.11.102.82	PTR	omega-mgt.com
72.11.102.134	A	mail.mcfay.com
72.11.102.170	A+PTR	mail.serveminnesota.org
72.11.103.151	A	tsgserverandstorage.com
72.11.103.151	A	tsg-usa.com
72.11.103.203	A	mail.smilemn.com
72.11.104.86	PTR	webmail.artekacompanies.com
72.11.104.90	A	webmail.advisornet.com
72.11.104.90	A	mail.swensonanderson.com
72.11.104.90	A	mailgate.advisornet.com
72.11.104.116	A	vickibenson.com
72.11.104.158	PTR	mail.gfabstract.com
72.11.104.158	A	mail.pcabstract.com
72.11.104.238	PTR	mail.swbinc.com
72.11.105.202	A	baxtercomputers.com
72.11.106.186	PTR	static.cmfexpress.com
72.11.106.186	A	mail.consulting-sdc.com
72.11.106.186	A	consulting-sdc.com
72.11.107.26	A	email.mnaidsproject.org
72.11.107.26	A	email.transitionalhousingprogram.org
72.11.107.130	A+PTR	mail.bbcmpls.org
72.11.107.139	PTR	mail.weathermod.com
72.11.107.141	PTR	weathermod.com
72.11.109.46	A	mail.wfjltd.com
72.11.109.181	PTR	lab-ext.eivia.com
72.11.109.195	PTR	mail.e-m-i.com
72.11.110.74	PTR	mail.coredevservices.com
72.11.110.74	PTR	mail.d-w-f.com
72.11.110.74	PTR	mail.designwisefurnishings.com
72.11.110.106	A	mail.gallipot.com
72.11.110.203	A	cottensinc.com
72.11.111.11	A	taierzhuang.org
72.11.111.43	A+PTR	mail.bonfe.com
72.11.111.43	A+PTR	mail.bonfes.com
72.11.111.43	PTR	mail.rjmiller.com
72.11.111.186	A	mail.hocmn.org
72.11.111.246	A	mail2.gruggen.com
72.11.112.192	A	mail.automotiveproductsinc.com
72.11.113.61	A	dynicusasales.com
72.11.113.66	A	mail.rothmiller.com
72.11.113.130	PTR	oregoninfragard.org
72.11.113.139	PTR	mail.valogdencenter.org
72.11.113.139	A	valogdencenter.org
72.11.113.147	PTR	calysto.focussemi.com
72.11.115.116	A	mail.telemed.org
72.11.115.116	A	mail2.telemed.org
72.11.115.118	A	trc.telemed.org
72.11.115.163	A	mail.triadmachinery.com
72.11.115.182	PTR	clackamas.pmrmtg.com
72.11.115.206	PTR	mail.trinetech.com
72.11.115.234	A	*.buyweston.com
72.11.116.85	PTR	mail.hayden-engineers.com
72.11.116.158	A	mx1.surface-home.com
72.11.117.226	A	mail.ptoncall.com
72.11.117.226	A	mail.therapyplacementservices.com
72.11.117.234	PTR	mail.jjdavidson.com
72.11.118.90	PTR	ryonetcorporation.com
72.11.118.90	A	icecomunications.com
72.11.118.90	A	hendersonbayproducts.com
72.11.118.106	A	mail2.cinetopiatheaters.com
72.11.120.4	PTR	mail.dressforsuccessoregon.org
72.11.120.76	PTR	mail.romanogatlandnw.com
72.11.120.96	A	mx.enaclark.com
72.11.120.115	PTR	mail.t-a-inc.com
72.11.120.115	A	mail.teamallianceusa.com
72.11.120.174	PTR	ccs06.correaconsulting.com
72.11.120.246	A	mail.thehealthcarecollaborativegroup.com
72.11.122.58	A	mail.macromfg.com
72.11.122.98	A	mail.downtowndevgrp.com
72.11.122.148	A	mail.tozmoz.net
72.11.122.149	A	greshamtoyota.info
72.11.122.149	A	mail.greshamtoyota.info
72.11.122.162	PTR	ns1.eescoc.com
72.11.123.101	PTR	mail.pre1.com
72.11.123.103	PTR	pdfpreview.com
72.11.125.10	PTR	mail.lifeworksnw.org
72.11.125.66	A+PTR	mail.postergarden.com
72.11.125.66	A	mail.flowerbox.com
72.11.125.66	A	mail.postergarden.ca
72.11.125.195	PTR	mail.multnomah.edu
72.11.126.150	PTR	denali.mapscu.com
72.11.126.162	PTR	mail.irwinhodsongroup.com
72.11.127.27	A	smtp.parksmetal.com
72.11.127.169	A	mail.extremetire.net