Robtex

Up: 193.22.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 193.22.16.0/22
Down right: 193.22.20.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.22.17.71	A+PTR	paolo.bitburger.de
193.22.17.71	A	mailserver.bitburger-business.com
193.22.17.71	A	mailserver.bitburger-gastronomie.com
193.22.17.73	A+PTR	kuen.bitburger.de
193.22.22.127	PTR	ip-193022022127.multimetro.pl