Robtex

Up: 193.104.166.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 193.104.167.0/25
Down right: 193.104.167.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.104.167.15	PTR	machine15.abc4it.com
193.104.167.26	PTR	machine26.abc4it.com
193.104.167.26	PTR	observer.abc4it.com
193.104.167.30	PTR	machine30.abc4it.com
193.104.167.30	A	dns2.hostparc.com
193.104.167.40	A+PTR	machine4.abc4it.com
193.104.167.40	A	mail.abc4it.net
193.104.167.40	A	mail.lokalregional.ch
193.104.167.41	PTR	mail.abc4it.net
193.104.167.41	A	ns2.abc4it.net
193.104.167.41	A	dns2.abc4it.net
193.104.167.55	A	dns1.abc4it.de
193.104.167.55	A	abc4it.de
193.104.167.55	A	lanniemcafee.blog.colors.ch
193.104.167.60	PTR	machine6.abc4it.com
193.104.167.60	A	dns6.abc4it.com
193.104.167.61	A	ns6.abc4it.com
193.104.167.69	PTR	machine14.abc4it.com
193.104.167.70	PTR	machine7.abc4it.com
193.104.167.70	A	ns7.abc4it.ch
193.104.167.85	A	dns1.blogout.ch
193.104.167.85	A	mail.blogout.ch
193.104.167.86	A	dns2.blogout.ch
193.104.167.90	A+PTR	machine90.abc4it.com
193.104.167.90	A	ns2.rackpark.net
193.104.167.95	PTR	machine95.abc4it.com
193.104.167.95	PTR	exchange.machine95.abc4it.com
193.104.167.95	PTR	sharepoint.machine95.abc4it.com
193.104.167.100	PTR	machine100.maildog.ch
193.104.167.100	A	mail.madmail.ch
193.104.167.100	A	mail.maildog.ch
193.104.167.101	A	dns2.maildog.ch
193.104.167.105	A+PTR	machine105.intranet4u.com
193.104.167.105	A	mail.intranet4u.com
193.104.167.105	A	intranet4u.com
193.104.167.106	A	dns2.intranet4u.com
193.104.167.110	A+PTR	machine110.host4u.ch
193.104.167.110	A	dns1.host4u.ch
193.104.167.110	A	netisign.ch
193.104.167.111	A	dns2.host4u.ch
193.104.167.120	A	dns1.hosting4u.ch
193.104.167.120	A	hosting4u.ch
193.104.167.120	A	mail.hosting4u.ch
193.104.167.160	A	ns1.irdisch.ch
193.104.167.160	A	dns.irdisch.ch
193.104.167.160	A	machine160.abc4it.com
193.104.167.180	PTR	machine1.abc4it.com
193.104.167.181	A	dns2.abc4it.org
193.104.167.182	A+PTR	machine2.abc4it.com
193.104.167.182	A	ns.abc4it.org
193.104.167.182	A	abc4it.com
193.104.167.183	A+PTR	mail.abc4it.com
193.104.167.183	A	dns2.abc4it.com
193.104.167.184	A	ns.abc4it.info
193.104.167.184	A	ns.abc4it.us
193.104.167.184	A	mail.abc4it.eu
193.104.167.185	A	ns1.abc4it.com
193.104.167.186	A	ns2.abc4it.com
193.104.167.187	PTR	machine12.abc4it.com
193.104.167.189	A+PTR	machine189.abc4it.com
193.104.167.189	A	mail.open-club.ch
193.104.167.189	A	mail.abc4it.biz
193.104.167.210	PTR	machine21.abc4it.com
193.104.167.210	PTR	machine21.host10.ch
193.104.167.210	A	mail.typo3now.com
193.104.167.211	A	dns2.host10.ch
193.104.167.211	A	mail.host10.ch
193.104.167.223	PTR	machine22.nametrade.ch
193.104.167.223	PTR	machine22.abc4it.com
193.104.167.223	A	spargeln.com
193.104.167.230	PTR	machine23.abc4it.com
193.104.167.230	A	it-stuff.ch
193.104.167.230	A	mail.caipi.ch
193.104.167.231	A	dns2.shopstick.ch
193.104.167.237	PTR	machine237.abc4it.com
193.104.167.237	A+PTR	nl.abc4it.com
193.104.167.238	PTR	machine238.abc4it.com
193.104.167.238	PTR	nl.abc4it.com
193.104.167.240	PTR	machine24.abc4it.com
193.104.167.240	A	perret.us
193.104.167.240	A	mail.junis.ch
193.104.167.241	A	dns2.perret.net
193.104.167.254	PTR	center.abc4it.com