Robtex

Up: 193.98.216.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 193.98.216.0/23
Down right: 193.98.218.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.98.217.74	PTR	mail.jvu.de
193.98.217.130	PTR	mail.kvr.de
193.98.217.130	A	mail.3d-ruhr.de
193.98.217.131	A	fliegendes-rathaus.de
193.98.217.131	A	mail.wissensmetropoleruhr.de
193.98.217.131	A	mail.masterplanung-rvr.de
193.98.217.132	A	mail.un-weit.de
193.98.217.135	PTR	mailgw.kvr.de
193.98.217.136	A	ruhrtal-events.de
193.98.217.136	A	mail.ruhrtal.de
193.98.217.136	A	naturforum.info