Robtex

Up: 72.11.64.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 72.11.64.0/20
Down right: 72.11.80.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.11.64.76	A	nwneuropsych.com
72.11.64.88	A	mail.seattleapartmentsearch.com
72.11.64.88	A	mail.rentalsinseattle.com
72.11.64.101	A+PTR	mail.go-vsi.com
72.11.64.114	A	mail.barnard.com
72.11.64.139	PTR	mail.cosmos-group.com
72.11.64.143	PTR	mail.utilikilts.com
72.11.64.180	PTR	public.jobincorporated.com
72.11.65.10	A	mail.merrimancapital.com
72.11.65.91	A+PTR	mail.bordeaux-wine-locators.com
72.11.65.91	A	mail.bordeauxwinelocators.com
72.11.65.115	A	mail.pmadm.com
72.11.65.150	PTR	mtgimx01.mantis-tgi.com
72.11.65.169	A+PTR	mail.cerep.com
72.11.65.202	A	mail.onconome.com
72.11.66.51	PTR	mail.hermanson.com
72.11.66.62	PTR	mail.reeveshima.com
72.11.66.62	A	cust-72-11-66-62.integraonline.com
72.11.66.66	PTR	rosepointnav.com
72.11.67.45	A	jasonmorrisette.com
72.11.67.45	A	test-mx.jasonmorrisette.com
72.11.67.118	A	mail.whf.org
72.11.68.35	PTR	mail.lalnet.com
72.11.68.91	PTR	mail.lcnw.org
72.11.68.123	A	72-11-68-123.oasisevents.com
72.11.68.131	A	mail1.capitalplanningcorp.com
72.11.68.142	A	brabhamclan.com
72.11.68.205	A	exchange.uproarseattle.com
72.11.68.241	PTR	sea-mountain.com
72.11.69.117	A	mail.bradlee.net
72.11.69.210	A	sulari.net
72.11.70.42	A+PTR	rww.spacesavernw.com
72.11.70.42	A	mail.spacesavernw.com
72.11.70.67	A+PTR	mail.pnts.com
72.11.70.67	A	mail.superbowlseats.com
72.11.70.67	A	mail.pioneer-tickets.com
72.11.70.90	PTR	usa-foreclosure.com
72.11.70.130	A+PTR	portal.gly.com
72.11.70.130	A	apps.gly.com
72.11.70.130	A	glydr2.chi03.gly.com
72.11.70.147	PTR	smtp.gly.com
72.11.70.195	A+PTR	mail.seitelsystems.com
72.11.70.195	A	mail.sla.com
72.11.70.195	A	scan.sla.com
72.11.70.226	PTR	mail.northwestconstruction.com
72.11.70.226	A	mail.northwestconst.com
72.11.71.154	A	mail.bskd.com
72.11.71.162	PTR	denomillikan.com
72.11.71.162	A	firegate.dmdd.com
72.11.71.187	A	mail.rappus.com
72.11.72.9	A	ibm.premoco.com
72.11.72.35	A+PTR	mail.sage-env.com
72.11.72.50	A	exchange.tbgroup.org
72.11.72.181	A	fiestaco.com
72.11.73.194	PTR	mail.mgpclaw.com
72.11.73.221	A	ostasiewski.com
72.11.73.232	PTR	mail.dimallc.com
72.11.73.232	A	72.11.73.232.markmarine.com
72.11.73.232	A	232.mwpromo.com
72.11.74.229	PTR	mail.xennsoft.com
72.11.75.87	A	mail.arrowheaddental.com
72.11.76.8	PTR	mail.isipeo.com
72.11.76.42	A	mail.sagefa.com
72.11.76.72	A	mail.slcit.com
72.11.76.99	A	mx2.rivierafitness.com
72.11.76.99	A	mail2.rivierafitness.com
72.11.76.198	A	remote.american-ws.com
72.11.76.245	PTR	incoming.slchamber.com
72.11.77.50	PTR	mail.wardeg.com
72.11.77.190	A	loganrivertrails.com
72.11.78.6	PTR	psnet.cc
72.11.78.34	PTR	mail.mrioa.com
72.11.78.45	A	mail.mrioa.com
72.11.78.46	A	mail2.mrioa.com
72.11.78.178	A	mail.cedslc.com
72.11.78.218	PTR	gw.lowratesusa.com
72.11.78.219	PTR	lowratesusa.com
72.11.78.220	PTR	mail.lowratesusa.com
72.11.78.220	A	mail.manufacturedloans.com
72.11.79.58	A+PTR	staynercpa.com
72.11.79.58	A	mail.staynercpa.com
72.11.80.38	PTR	mail.internal.oregonfirst.com
72.11.80.38	A	relay.tiffanyrealproperty.com
72.11.80.78	A	mail.evancemd.com
72.11.80.130	PTR	hme.hickeymarine.com
72.11.80.228	A	mail.bioject.com
72.11.81.117	PTR	rev.microniche.com
72.11.81.117	A	mail.clinicalmicrostat.com
72.11.81.251	A	bench.whitsell-test.com
72.11.81.252	A	mail.whitsell-test.com
72.11.83.154	A+PTR	mail.chevalier-adv.com
72.11.84.83	PTR	mail.peer-tech.com
72.11.84.83	A	mailmp.peer-tech.com
72.11.84.130	PTR	mail2.articsheetmetal.com
72.11.84.130	A	mail.loadfresh.com
72.11.84.130	A	mail2.arcticsheetmetal.com
72.11.84.162	A+PTR	mailhost2.rlpi.com
72.11.84.243	A	mail.chernofflaw.com
72.11.85.18	PTR	mail.shorebankpacific.com
72.11.85.19	PTR	mail.sbpac.com
72.11.85.58	A	mail.nwnewborn.com
72.11.85.58	A	mail.nnspc.com
72.11.85.134	A	mail.venerableproperties.com
72.11.85.138	A	mail.coastcutlery.com
72.11.85.194	PTR	mail.gohollywood.com
72.11.86.10	PTR	public.unitedsalad.com
72.11.86.43	A	owss.com
72.11.86.74	A+PTR	mail.eoplaw.com
72.11.86.82	PTR	mail.lanepr.com
72.11.86.186	A+PTR	mail.kga.cc
72.11.86.186	A	mail.kramer-gehlen.com
72.11.86.202	PTR	iselinursery.com
72.11.87.65	A	mail.mackroberts.com
72.11.87.171	A+PTR	mail.imerjent.com
72.11.87.177	A	ns1.systemsolutionstech.com
72.11.88.2	A+PTR	mail.pathfinder-logistics.com
72.11.88.93	PTR	mail.cumminsgoodman.com
72.11.88.110	A	mail.pdxvisitingangels.com
72.11.89.42	PTR	mail.portlandmechanical.com
72.11.89.42	A	mail.sheplerinc.com
72.11.89.183	A	eregon.com
72.11.89.183	A	mail.eregon.com
72.11.89.183	A	mail.snarf.net
72.11.89.185	A	web2.snarf.net
72.11.90.37	A	firstplan.info
72.11.90.116	A+PTR	mail.myfamilyfirm.com
72.11.90.148	A	tlandislaw.com
72.11.90.195	PTR	mail.wweek.com
72.11.91.6	PTR	mail.oregonhalfwayhouse.org
72.11.91.26	A	mail1.newfocusfinancial.com
72.11.91.26	A	mail1.newfocusfinancial.net
72.11.91.50	A	mail.adelsheimvineyard.com
72.11.91.51	PTR	mhloans.com
72.11.91.102	A+PTR	mail.elkcove.com
72.11.91.137	A+PTR	mail.certifiedlanguages.com
72.11.91.137	A	mail.clilang.com
72.11.91.140	PTR	mail.certifiedlanguages.com
72.11.92.38	A	mail.mercantileportland.com
72.11.92.94	A	mail.rosecitymoving.com
72.11.92.114	A	mail.westernrivers.org
72.11.92.130	PTR	mail.uhcsolutions.com
72.11.94.18	PTR	hpfmailroot.horsepowerfreaks.com
72.11.94.19	PTR	mail.horsepowerfreaks.com
72.11.94.19	A	hpfreaks.us
72.11.94.42	A	mx3.nivelparts.com
72.11.94.82	PTR	mail.sagacitymedia.com
72.11.94.162	A	mail.alliedsystemsco.com
72.11.95.54	A	mail.fujiiproduce.com
72.11.95.62	A	mail.columbiarubbermills.com