Robtex

Up: 199.168.12.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 199.168.13.0/25
Down right: 199.168.13.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.168.13.30	A	zenoss.nature.com
199.168.13.37	A+PTR	babylon.nature.com
199.168.13.37	A	appserver5.nature.com
199.168.13.41	A	peabody.nature.com
199.168.13.44	A+PTR	sherlock.nature.com
199.168.13.70	A+PTR	npg.nature.com
199.168.13.70	A+PTR	press.nature.com
199.168.13.70	A+PTR	refams.nature.com
199.168.13.71	A	macmedcoms.es
199.168.13.71	A	webadmin.palgrave-journals.com
199.168.13.71	A	macmillanmedical.jp
199.168.13.75	A	uandf.nature.com
199.168.13.75	A	www.palgraveconnect.com
199.168.13.75	A	ns.nature.com
199.168.13.77	PTR	scientificamericapathways.com
199.168.13.77	A	nephrology-gateway.org
199.168.13.77	A	responses.ealert.nature.com
199.168.13.78	A+PTR	test-sp.macmillan.com
199.168.13.79	A+PTR	webadmin.nature.com
199.168.13.95	A	naturepreceedings.com
199.168.13.95	A	heredityblog.com
199.168.13.95	A	www.natureprotocols.com
199.168.13.104	A	j2ee1.nature.com
199.168.13.156	A+PTR	mtsbigip.nature.com
199.168.13.156	A	mts-li.nature.com
199.168.13.156	A	mts-scsandc.nature.com
199.168.13.159	A+PTR	smtp1.mts.nature.com
199.168.13.252	A	connotea.com
199.168.13.252	A	connotea.net
199.168.13.252	A	connotea.org