Robtex

Up: 72.28.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 72.28.64.0/21
Down right: 72.28.72.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.28.64.58	A	static-72-28-64-58.gtcust.grouptelecom.net
72.28.64.166	A	aicadsl.com
72.28.68.83	PTR	static-72-28-68-83.gtcust.grouptelecom.net
72.28.68.83	A	datingsolutions.com
72.28.70.52	A	ns1-hosting.bell.ca
72.28.70.53	A+PTR	ns1.hosting.bell.ca
72.28.70.53	A	ns2-hosting.bell.ca
72.28.70.60	A+PTR	www.as577.net
72.28.70.71	PTR	portalold.hosting.bell.ca
72.28.70.71	A	mail.bellnhs.ca
72.28.70.71	A	mail.hosting.bell.ca
72.28.70.86	A	ns4.bellnhs.ca
72.28.70.96	A	pointclickcare.net
72.28.70.96	A	www.pointclickcare.net
72.28.70.96	A	www1.pointclickcare.com
72.28.70.124	A	sha2only.pointclickcare.ca
72.28.70.164	PTR	ecexfront.easternconstruction.com
72.28.70.183	A	www.tbcdsb.on.ca
72.28.70.196	A	altusquebec.com
72.28.70.196	A	altusrsga.com
72.28.70.198	A	helyar.com
72.28.70.198	A	andrewspartnership.com
72.28.70.208	A	owa.altusgroup.com
72.28.70.208	A	outlook.altusgroup.com
72.28.70.208	A	ews.altusgroup.com
72.28.70.212	A	mail.groupegeocom.com
72.28.70.246	A	2320643ontarioinc.com
72.28.71.6	A	www.aramark.ca
72.28.71.20	A	xstratacopper-kiddmine-ea.com
72.28.71.42	A	www.academyol.com
72.28.71.46	A	lms.academyoflearning.net
72.28.71.52	A	courses.trainingat360.com
72.28.71.59	A	ns2.launchlifeinternational.org
72.28.71.60	A	ns1.launchlifeinternational.org
72.28.71.101	PTR	mailman2.questrade.com
72.28.71.101	A	questradeusa.com
72.28.71.103	A	appv2.ixactcontact.com
72.28.71.103	A	4xuniversity.com
72.28.71.129	PTR	nhswsp145708wss.bbsi.ca
72.28.71.129	A	ns2.scalar.ca
72.28.71.140	A	smtp1.scalar.ca
72.28.71.140	A	mx2.scalarmail.ca
72.28.71.140	A	oanda.mx2.scalarmail.ca
72.28.71.186	PTR	mail2.musicrypt.com
72.28.71.187	PTR	mail.musicrypt.com
72.28.71.213	A	yyz-acropolis.imanet.net
72.28.71.214	A	yyz-db1.imanet.net
72.28.71.253	A+PTR	mail.altusgroup.com
72.28.71.253	A	mail.paddisons.co.uk
72.28.71.253	A	mail.ratesrecovery.com
72.28.72.16	PTR	static-72-28-72-16.gtcust.grouptelecom.net
72.28.72.16	A	flagstone-mosaic.bm
72.28.72.17	A	mail1.flagstonere.bm
72.28.72.17	A	mail1.westend.bm
72.28.73.1	PTR	static-72-28-73-1.gtcust.grouptelecom.net
72.28.76.16	PTR	static-72-28-76-16.gtcust.grouptelecom.net
72.28.76.109	A	cgy.3.britec.com
72.28.76.109	A	cgy.mx1.britec.com
72.28.76.134	A	services.reconpetro.com
72.28.76.136	A	mail.experthearingsolutions.com
72.28.76.138	A	missionreadysi.com
72.28.76.139	A	mail.workforce-edge.com
72.28.76.149	A	mail.workforce-edge.com
72.28.76.156	A	mail.estreams.ca
72.28.76.156	A	mail.che-s.ca
72.28.76.158	A	mail.profocuscoaching.com
72.28.76.165	A	corpmail.hgcareers.com
72.28.76.165	A	mail2.hgcareers.com
72.28.76.201	A	mail.partscanada.net
72.28.76.201	A	mail.dragspecialties.ca
72.28.76.201	A	dealers.partscanada.com
72.28.76.210	PTR	static-72-28-76-210.gtcust.grouptelecom.net
72.28.76.210	A	powertwins.com
72.28.76.210	A	www.partscanada.com
72.28.77.104	A	eggworks.ca
72.28.77.165	A	mail.dmcl.ca
72.28.77.165	A	mail.dmch.com
72.28.77.168	A	owa.dmcl.ca