Robtex

Up: 217.65.166.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 217.65.166.0/25
Down right: 217.65.166.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
217.65.166.8	A+PTR	ns3.dns.clearhost.co.uk
217.65.166.8	A	ns3.uk.umis.net
217.65.166.10	A+PTR	consoles.ixe1.uk.umis.net
217.65.166.22	PTR	web6.ixe1.uk.umis.net
217.65.166.22	A	reallymad.org
217.65.166.22	A	arccan.co.uk
217.65.166.34	A+PTR	ns0.uk.umis.co.uk
217.65.166.34	A	ns0.dico.co.uk
217.65.166.34	A	ns2.dico.net
217.65.166.35	A+PTR	ns1.uk.umis.net
217.65.166.35	A	ns1.dico.net.uk
217.65.166.36	A+PTR	relay1.mail.clearhost.co.uk
217.65.166.36	A	mx1.uk.umis.net
217.65.166.36	A	mail.themusicindustry.com
217.65.166.37	A+PTR	relay2.mail.clearhost.co.uk
217.65.166.37	A	mx1.uk.umis.net
217.65.166.37	A	mail.themusicindustry.com
217.65.166.38	A+PTR	relay3.mail.clearhost.co.uk
217.65.166.38	A	mail.themusicindustry.com
217.65.166.38	A	umx3.prtsystems.net
217.65.166.39	A+PTR	relay4.mail.clearhost.co.uk
217.65.166.39	A	mail.themusicindustry.com
217.65.166.39	A	umx3.neo-tel.net
217.65.166.40	A+PTR	smtp1.mail.clearhost.co.uk
217.65.166.40	A	smtp5.uk.umis.net
217.65.166.40	A	smtp.mail.clearhost.co.uk
217.65.166.41	A+PTR	smtp2.mail.clearhost.co.uk
217.65.166.41	A	smtp.mail.clearhost.co.uk
217.65.166.42	A+PTR	smtp3.mail.clearhost.co.uk
217.65.166.42	A	smtp.mail.clearhost.co.uk
217.65.166.42	A	smtp7.uk.umis.net
217.65.166.43	A	smtp.mail.clearhost.co.uk
217.65.166.43	A	smtp4.mail.clearhost.co.uk
217.65.166.44	A+PTR	res1.dns.clearhost.co.uk
217.65.166.44	A	galadriel.mail.clearhost.co.uk
217.65.166.66	A+PTR	japan.ixe1.uk.umis.net
217.65.166.66	A	mylesforrester.com
217.65.166.66	A	fatbloke.com