Robtex

Up: 66.9.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 66.9.48.0/21
Down right: 66.9.56.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.9.48.19	PTR	mail.monumentinsurance.co.uk
66.9.48.41	PTR	external-email-london.lombardrisk.com
66.9.49.210	PTR	mail.rlam.co.uk
66.9.49.210	A	mail.rlam.co.gg
66.9.50.195	A+PTR	relay01.centrictelecom.net
66.9.50.197	PTR	ns1.centrictelecom.com
66.9.50.210	A+PTR	europe01.intellispace.net
66.9.50.226	PTR	auth2.uk.intellispace.net
66.9.50.242	A+PTR	europe02.intellispace.net
66.9.53.60	PTR	yli.co.uk
66.9.53.114	A+PTR	smtp.exchange-tower.co.uk
66.9.53.114	A	smtp.exchange-tower.info
66.9.53.114	A	smtp.exchange-tower.com
66.9.53.123	PTR	mail.tower42.com
66.9.53.130	A	neutrogenawinter.com
66.9.53.130	A	betfairtennis.com
66.9.53.172	PTR	dns0.tartarus.org
66.9.53.193	A	xsys193.jobsite.co.uk
66.9.53.198	A	xsys198.jobsite.co.uk
66.9.53.199	A	xsys199.jobsite.co.uk
66.9.53.200	A	xsys200.jobsite.co.uk
66.9.53.240	A	cc-notes1.cc.net
66.9.53.241	A+PTR	mail.worldstone.com
66.9.54.0	A	ip-66-9-54-0.autorev.intellispace.net
66.9.55.2	A	ns1.allsector.net
66.9.55.21	A	leadinghire.org
66.9.55.23	A	leadinghiremetrodc.org
66.9.55.25	A	parnossahworkscincinnati.org
66.9.55.27	A	parnossahworksfegs.org
66.9.55.32	A	parnossahworkschicago.org
66.9.55.34	A	sendtrac.com
66.9.55.47	A	allsectorhelpdesk.com
66.9.55.50	A	xbrm.com
66.9.55.50	A	*.hr-dynamics.com
66.9.55.50	A	hrdynamicsnyc.com
66.9.55.80	A	mail3.allsector.com
66.9.55.158	A	mail.mggpclaw.com
66.9.56.78	A	mail2.fisci.com
66.9.56.140	PTR	mail.lalame.com
66.9.56.197	PTR	mail.gny.com
66.9.58.99	PTR	mail.hachroselaw.com
66.9.58.99	A	mx.lohrsoft.com
66.9.58.99	A	lohrsoft.com
66.9.59.131	PTR	mail.steeliteusa.com
66.9.59.179	A	remote.premiertaxandfinancial.com
66.9.60.60	A+PTR	smtp.collegiateschool.org
66.9.60.194	A	www.kenneshepherd.com
66.9.60.194	A	kenneshepherd.com
66.9.60.195	A	teslatelcom.com
66.9.60.195	A	printpromotions.com
66.9.61.5	PTR	ln2.telestogroup.com
66.9.61.5	A	ln1.telestogroup.com
66.9.61.46	PTR	sbs.simplesolve.com
66.9.61.160	PTR	sida.vilario.com
66.9.61.189	PTR	mail.vilario.com
66.9.61.205	A+PTR	sbs.imarketingltd.com
66.9.61.219	PTR	raptor.gear3.com