Robtex

Up: 31.3.104.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 31.3.104.0/25
Down right: 31.3.104.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
31.3.104.2	A	rtr2.bit-2.tuxis.net
31.3.104.3	A+PTR	rtr2.core.tuxis.net
31.3.104.9	A	tuxis-hosts-gw.tuxis.net
31.3.104.21	A	pdu03.infra.tuxis.net
31.3.104.26	A+PTR	br1.bit2c.tuxis.net
31.3.104.26	A	sw1.bit-2.tuxis.net
31.3.104.31	PTR	zstore01.tuxis.net
31.3.104.33	A	tuxis-vm-gw.tuxis.net
31.3.104.37	PTR	smtp2.tuxis.nl
31.3.104.37	A	www.tuxis.net
31.3.104.37	A	host01.tuxis.net
31.3.104.38	A+PTR	mx1.tuxis.nl
31.3.104.38	A	mx1.tuxis.net
31.3.104.39	PTR	host02.tuxis.net
31.3.104.39	A	mail.tuxis.nl
31.3.104.40	PTR	fastnetmon.tuxis.net
31.3.104.40	A	cdn.tuxis.net
31.3.104.40	A	mondhygienist-utrecht.nl
31.3.104.41	PTR	stats.tuxis.net
31.3.104.41	A	netflow.tuxis.net
31.3.104.42	A+PTR	nagios.tuxis.net
31.3.104.43	A+PTR	nlnogring.tuxis.net
31.3.104.49	A+PTR	operator.tuxis.net
31.3.104.50	A	puppetmaster.tuxis.net
31.3.104.51	A	nscache1.tuxis.net
31.3.104.52	A+PTR	nscache2.tuxis.net
31.3.104.54	A+PTR	nssecauth1.tuxis.net
31.3.104.54	A	ns1.kopcloud.nl
31.3.104.57	A	syslog.tuxis.net
31.3.104.58	A	otrs.tuxis.net
31.3.104.60	A+PTR	debmirror.tuxis.net
31.3.104.60	A	nl.pool.ntp.org
31.3.104.60	A	0.nl.pool.ntp.org
31.3.104.61	A+PTR	nscache1.tuxis.nl
31.3.104.62	A+PTR	nscache2.tuxis.nl
31.3.104.117	A	lb1.tuxis.net
31.3.104.118	A+PTR	lb2.tuxis.net
31.3.104.121	A+PTR	loadbalanced.tuxis.nl
31.3.104.121	A	tuxis.net
31.3.104.121	A	bestandonline.nl
31.3.104.122	PTR	http.tuxis.nl
31.3.104.122	A	in2care.in
31.3.104.122	A	hosted-kerio.com
31.3.104.151	A+PTR	icewarp.tuxis.net
31.3.104.151	A	icewarp.tuxis.nl
31.3.104.190	A	bestandonline.nl
31.3.104.190	A	bestand-online.nl
31.3.104.190	A	https-ict.nl