Robtex

Up: 213.170.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 213.170.0.0/20
Down right: 213.170.16.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.170.0.11	PTR	mail-1.fido.net
213.170.0.11	A	mx10.fido.im
213.170.0.11	A	gateway.spamblock.co
213.170.0.12	A	mx10.fido.im
213.170.0.12	A	lon-1.spamcloud.info
213.170.0.12	A	mx10.as8282.net
213.170.0.45	PTR	mail.headjog.co.uk
213.170.0.45	A	courierinleeds.co.uk
213.170.0.45	A	sealfilms.co.uk
213.170.0.49	PTR	d5aa0031.web-21.server.fido.net
213.170.0.53	PTR	ns4.server.fido.net
213.170.0.65	PTR	fido-dev.net
213.170.0.70	A	jonmorby.com
213.170.0.70	A	mail.jonmorby.com
213.170.0.88	A	mail.searchforyourdomainhere.net
213.170.0.88	A	mail.searchforyourdomainhere.com
213.170.0.97	A	mail.lottoxpert.com
213.170.0.97	A	soeasycorp.com
213.170.0.97	A	lotto-xpert.com
213.170.0.100	PTR	hb.fido.net
213.170.0.137	A	horsespirit.co.uk
213.170.0.139	A	www.rubble.org
213.170.0.142	A	mail.mobilefonemedia.com
213.170.0.142	A	mobilefonemedia.com
213.170.0.162	A+PTR	prompt.mx
213.170.0.162	A	mail.prompt.mx
213.170.0.168	A	mail.dyrms.net
213.170.0.168	A	dyrms.net
213.170.0.197	A	morby.org
213.170.0.197	A	mail.morby.org
213.170.0.209	A	mail-1-209.fido.net
213.170.0.212	A	mail-1-212.fido.net
213.170.0.231	A	mail-2-231.fido.net
213.170.0.232	A	mail-2-232.fido.net
213.170.0.234	A	mail-2-234.fido.net
213.170.0.236	A	mail-2-236.fido.net
213.170.1.11	PTR	pbx.fido.net
213.170.6.21	A	prompt.so
213.170.10.110	A	vc00.kvm.ifonic.net
213.170.10.140	PTR	web.ifonic.net
213.170.10.162	PTR	cu.kvm.may.be
213.170.10.254	A	gw.ifonic.net