Robtex

Up: 193.101.64.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 193.101.68.0/23
Down right: 193.101.70.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.101.68.1	PTR	education.wickhill.de
193.101.68.2	A+PTR	mail.versendeservice.de
193.101.68.15	PTR	securemail.wickhill.de
193.101.68.18	A+PTR	mail.wickhill.de
193.101.68.18	A	mail.ewickhill.de
193.101.68.18	A	mail.wickhill.at
193.101.68.27	A	mail.schuschelmubser.de
193.101.68.77	PTR	matthiasg.wickhill.de
193.101.68.81	PTR	edgesupport1.wickhill.de
193.101.68.82	A	mail.safewire.de
193.101.68.83	A	mail.safewire.de
193.101.68.89	A	mail.pgp.wickhill.de
193.101.68.90	PTR	symcloud.wickhill.de
193.101.68.90	PTR	mail.symcloud.wickhill.de
193.101.68.91	PTR	zenprise.pgp.wickhill.de
193.101.68.101	PTR	netilla.wickhill.de
193.101.68.141	A+PTR	crl.wickhill.de
193.101.71.15	A	gzs-paymaster.de