Robtex

Up: 203.23.232.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.23.236.0/23
Down right: 203.23.238.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.23.236.41	A	dlns.comcen.com.au
203.23.236.49	A+PTR	203-23-236-49-cpe.spintel.net.au
203.23.236.66	PTR	comcen.comcen.com.au
203.23.236.66	A	ns1.comcen.com.au
203.23.236.66	A	209.1.210.in-addr.arpa
203.23.236.68	A+PTR	secure.comcen.com.au
203.23.236.68	A	secure.spin.net.au
203.23.236.69	PTR	angel.comcen.com.au
203.23.236.69	A	ns2.comcen.com.au
203.23.236.69	A	mel.comcen.com.au
203.23.236.72	PTR	star2.comcen.com.au
203.23.236.73	A+PTR	xavier.comcen.com.au
203.23.236.73	A	mail.spraci.com
203.23.236.77	A+PTR	alpine.spintel.net.au
203.23.236.79	PTR	archon.comcen.com.au
203.23.236.79	A	ns3.spintel.net.au
203.23.236.84	A+PTR	nebula.comcen.com.au
203.23.236.84	A	pluto.comcen.com.au
203.23.236.84	A	myaccount.australis.com.au
203.23.236.88	A+PTR	havok.spintel.net.au
203.23.236.88	A	mail.midweeker.com.au
203.23.236.88	A	dogtrainingmelbourne.com.au
203.23.236.90	PTR	www.spintel.net.au
203.23.236.95	A	diallns.comcen.com.au
203.23.236.96	PTR	voip.comcen.com.au
203.23.236.96	A	sip.australis.com.au
203.23.236.96	A	voip.spin.net.au
203.23.236.98	A	demon.comcen.com.au
203.23.236.99	A	lns1.comcen.com.au
203.23.236.100	A+PTR	havok.spintel.net.au
203.23.236.100	A	robertgollagher.com
203.23.236.100	A	cornellgroup.net
203.23.236.101	PTR	havok.spintel.net.au
203.23.236.107	A+PTR	alpha.comcen.com.au
203.23.236.107	A	mx0.spin.net.au
203.23.236.107	A	iblis.comcen.com.au
203.23.236.108	PTR	raptor.spintel.net.au
203.23.236.108	A	mx1.comcen.com.au
203.23.236.108	A	mx1.spin.net.au
203.23.236.112	A+PTR	epsilon.spintel.net.au
203.23.236.112	A	mx2.spintel.net.au
203.23.236.112	A	mx2.comcen.com.au
203.23.236.114	A	polaris.spintel.net.au
203.23.236.118	A+PTR	havok-smtp2.spintel.net.au
203.23.236.118	A	ness.com.au
203.23.236.118	A	mail.raevietnamassociation.org
203.23.236.120	A+PTR	havok-smtp.spintel.net.au
203.23.236.120	A	havok.spintel.net.au
203.23.236.120	A	mail.birchwood.com.au
203.23.236.123	PTR	203-23-236-123-cpe.spintel.net.au
203.23.236.131	A	namic.comcen.com.au
203.23.236.225	PTR	pipedc2-bdr1.brisbane.sonet.net.au
203.23.236.237	A+PTR	ns1.cyberstriker.com
203.23.236.237	A	gw1.cyberstriker.com
203.23.236.237	A	ns1.cyberstriker.com.au
203.23.236.254	A+PTR	ebill.spin.net.au
203.23.237.11	A	snugmail2.ltkit.org
203.23.237.65	A+PTR	core-melb.comcen.com.au
203.23.237.65	A	libra.comcen.com.au
203.23.237.65	A	cancer.comcen.com.au
203.23.237.66	A	ns4.comcen.com.au
203.23.237.71	A	envy.comcen.com.au
203.23.237.76	A	jupiter.comcen.com.au
203.23.237.84	A	cluster.comcen.com.au
203.23.237.96	PTR	mel5200.comcen.com.au
203.23.237.129	PTR	meloffice2500.comcen.com.au
203.23.237.129	A	host1.starhost.com.au
203.23.237.129	A	dns2.crossworks.com.au
203.23.237.130	PTR	anthony.comcen.com.au
203.23.237.135	A	the-gallery.comcen.com.au
203.23.237.136	A	maddy.comcen.com.au
203.23.237.139	A+PTR	danielh.comcen.com.au
203.23.237.140	A	it-melb.comcen.com.au
203.23.237.196	PTR	zelda.stylin.com.au
203.23.237.196	A	mail.taurustf.com.au
203.23.237.200	PTR	hosting.wireless.org.au
203.23.237.200	A	3.au.pool.ntp.org
203.23.237.200	A	1.freebsd.pool.ntp.org
203.23.237.202	PTR	mail.stylin.com.au
203.23.237.207	PTR	mail.cosmic.net.au
203.23.237.240	PTR	mail.precisionmail.com.au
203.23.237.250	PTR	203-23-237-250-cpe.spintel.net.au
203.23.238.48	A	herpaderpa.com
203.23.239.65	A	support.insmart.com