Robtex

Up: 66.241.128.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 66.241.128.0/23
Down right: 66.241.130.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.241.128.12	A+PTR	smtp.cogecodata.com
66.241.128.13	A+PTR	postoffice.cogecodata.com
66.241.128.14	A+PTR	dns1.cogecodata.com
66.241.128.15	A+PTR	dns2.cogecodata.com
66.241.128.17	PTR	ftp1.cogecodata.com
66.241.128.33	A+PTR	smtp1.cogecodata.com
66.241.128.33	A	backup.relay.mtotelecom.com
66.241.128.33	A	backup.mx.mtotelecom.com
66.241.128.131	PTR	mail.tsh.to
66.241.128.179	A+PTR	exet01.havergal.on.ca
66.241.128.180	A	excas01.havergal.on.ca
66.241.128.181	A+PTR	mx.havergal.on.ca
66.241.128.193	A+PTR	sol.radkefilms.com
66.241.128.194	A+PTR	phoebe.radkefilms.com
66.241.128.197	A	luna.radkefilms.com
66.241.128.198	A	helios.radkefilms.com
66.241.128.198	A	helios.opc.tv
66.241.128.201	PTR	europa.radkefilms.com
66.241.128.201	A	europa.vapormusic.com
66.241.128.201	A	europa.undefined.tv
66.241.128.204	A	io.everythingsgonegreen.com
66.241.128.204	A	calypso.radkefilms.com
66.241.128.208	A+PTR	vulcan.radkefilms.com
66.241.128.210	A+PTR	grus.radkefilms.com
66.241.128.212	A	mimosa.radkefilms.com
66.241.128.214	A	situla.radkefilms.com
66.241.128.215	A+PTR	galileo.radkefilms.com
66.241.128.216	A	alcor.radkefilms.com
66.241.128.217	A	chertan.radkefilms.com
66.241.128.218	A	himalia.radkefilms.com
66.241.128.219	A	iapetus.radkefilms.com
66.241.128.220	A	janus.radkefilms.com
66.241.128.221	A	epimetheus.radkefilms.com
66.241.128.222	A	selene.373k.tv
66.241.128.222	A	selene.125george.tv
66.241.128.249	A	ns3.reamined.ca
66.241.129.69	A	mail.esispecialists.com
66.241.129.72	PTR	thti-0403406
66.241.129.73	PTR	thti-0403406
66.241.129.74	A	dam.roots.com
66.241.129.75	PTR	thti-0403406
66.241.129.76	PTR	thti-0403406
66.241.129.77	PTR	thti-0403406
66.241.129.78	PTR	thti-0403406
66.241.129.100	A	smtp.evanovradio.com
66.241.129.101	PTR	mail.evanovradio.com
66.241.129.105	A	alpha.sherbourne.on.ca
66.241.129.105	A	healthbus.ca
66.241.129.106	A+PTR	mail.sherbourne.on.ca
66.241.129.106	A	host1.vizible.com
66.241.129.107	A	host1.vizible.com
66.241.129.109	A	thiing.ca
66.241.129.130	A	webmail.coc.ca
66.241.129.131	A+PTR	mail.coc.ca
66.241.129.132	A+PTR	ftp.coc.ca
66.241.129.134	A	remote.coc.ca
66.241.129.137	PTR	corcare.net
66.241.129.137	A	mx.corcare.net
66.241.129.138	A+PTR	corcare.org
66.241.129.138	A	mail.corcare.org
66.241.129.163	A+PTR	office.cdho.org
66.241.129.197	A+PTR	smtp2.sw.ca
66.241.129.198	A+PTR	smtp.sw.ca
66.241.129.198	A	smtp2.wchospital.ca
66.241.129.198	A	smtp2.sunnybrook.ca
66.241.129.202	A	mail.it-dept.ca
66.241.129.206	A	remote.alleen.com
66.241.129.206	A	mail.alleen.com
66.241.129.206	A	mail1.alleen.com
66.241.129.219	A	cameras.ccat.on.ca
66.241.129.220	PTR	exchange.ccat.on.ca
66.241.129.221	PTR	mail.ccat.on.ca
66.241.129.222	A+PTR	ccat.on.ca
66.241.129.222	A	cc-fs.ca
66.241.129.241	A	external.alliancefilms.com
66.241.129.244	PTR	mail.alliancefilms.com
66.241.130.70	A	piratemap.ca
66.241.130.74	A	ps-secure.com
66.241.130.101	A	portal.onezone.ca
66.241.131.14	A	portal.directenergy.com
66.241.131.15	A	portal.wturetailenergy.com
66.241.131.16	A	portal.cplretailenergy.com
66.241.131.20	PTR	mail1.ngwi.com
66.241.131.20	A	spf.bchydro.com
66.241.131.20	A	mail1.deml.com
66.241.131.23	A+PTR	bulkmailer.communications.directenergy.com
66.241.131.34	A	itmakeover.com
66.241.131.34	A	codenotes.com
66.241.131.34	A	mail.jeprs.com
66.241.131.37	A	webmail.infusiondev.com
66.241.131.40	PTR	project.extranet.infusiondev.com
66.241.131.41	A	jhnt.codenotes.com
66.241.131.41	A	mail.codenotes.com
66.241.131.52	A	webmail.infusiondevlab.com
66.241.131.56	A	infusiondev.com
66.241.131.56	A	www.infusiondev.com
66.241.131.67	PTR	ns1.fitcanada.com
66.241.131.68	PTR	ns2.fitcanada.com
66.241.131.70	A	exchange.techinspirations.com
66.241.131.74	PTR	mail.ocsa.on.ca
66.241.131.76	A	butterflydays.org
66.241.131.77	A	*.rjm56.com
66.241.131.77	A	mail.rjm56.com
66.241.131.77	A	rjm56.com
66.241.131.80	A	youdle.ca
66.241.131.80	A	canadiandemo.ca
66.241.131.80	A	canadiandemolition.ca
66.241.131.82	PTR	agmail2.achieveglobal.ca
66.241.131.84	PTR	mail.ocsa.on.ca
66.241.131.87	A	cibc.rolerview.com
66.241.131.87	A	cibcadmin.rolerview.com
66.241.131.97	PTR	h97-131-241.66.datawire.net
66.241.131.100	A+PTR	support.datawire.net
66.241.131.101	A+PTR	stagingsupport.datawire.net
66.241.131.163	A	mail.konverge.com
66.241.131.164	A	mail.jrfamily.com
66.241.131.164	A	jrfamily.com
66.241.131.198	A	dap.geosoft.com
66.241.131.212	A+PTR	mail.geosoft.com
66.241.131.214	A+PTR	lyris.geosoft.com
66.241.131.215	A	license.geosoft.com
66.241.131.230	A	telepark.us
66.241.131.230	A	telepark.ca
66.241.131.230	A	www.telepark.ca
66.241.131.240	A	exchange.preciserd.ca
66.241.131.241	A	ns1.preciseparklinkusa.com
66.241.131.241	A	preciseparklinkusa.com
66.241.131.241	A	ns1.preciserd.com
66.241.131.245	A	hpasscustomer.preciserd.com