Robtex

Up: 203.16.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.16.40.0/23
Down right: 203.16.42.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.16.41.10	A	ns1.rch.org.au
203.16.41.10	A	ns1.wch.org.au
203.16.41.12	A	vpn.rch.org.au
203.16.41.17	A	webmail.rch.org.au
203.16.41.20	A+PTR	mx3.rch.org.au
203.16.41.20	A	mx3.wch.org.au
203.16.41.21	A+PTR	razor.rch.org.au
203.16.41.21	A	mx1.wch.org.au
203.16.41.22	PTR	mx2.rch.org.au
203.16.41.24	A	rwh.org.au
203.16.41.24	A	wch.org.au
203.16.41.24	A	www.rch.unimelb.edu.au
203.16.41.32	A	pi.wch.org.au
203.16.41.37	A	lyris.wch.org.au
203.16.41.42	A	video.wch.org.au
203.16.41.45	A	qflow.rch.org.au
203.16.41.46	A	openclinica.mcri.edu.au
203.16.41.47	A+PTR	redcap.mcri.edu.au
203.16.41.48	A	dsdnetwork.mcri.edu.au
203.16.41.53	A	possumcore.com
203.16.41.53	A	prod.possumcore.com
203.16.41.55	A	hera.wch.org.au
203.16.41.55	A	mx1.mcri.edu.au
203.16.41.57	A	echemical.mcri.edu.au
203.16.41.62	A+PTR	helix.mcri.edu.au
203.16.41.62	A	eprem.org.au
203.16.41.88	A	www.ghsv.org.au
203.16.41.96	A	hopscotchdata.mcri.edu.au
203.16.41.99	A	vcgs.com.au
203.16.41.105	A	phda.rch.org.au
203.16.41.125	A+PTR	servicedesk.mcri.edu.au
203.16.41.126	A+PTR	eresearch.mcri.edu.au
203.16.41.135	A	mob.mcri.edu.au
203.16.41.139	A+PTR	re-ws.mcri.edu.au
203.16.41.146	A+PTR	kb.mcri.edu.au
203.16.41.149	A	rch.org.au
203.16.41.149	A	www.rch.org.au
203.16.41.149	A	cms1.rch.org.au
203.16.41.150	A	cms2.rch.org.au
203.16.41.152	A	www.cats-mcri.org.au
203.16.41.153	A	2000stories.org.au
203.16.41.161	A+PTR	outlook.rch.org.au
203.16.41.184	PTR	whatson.mcri.edu.au
203.16.41.184	A	australiangenomics.org.au
203.16.41.187	A+PTR	ce.rch.org.au
203.16.41.190	A	epic.rch.org.au
203.16.41.201	A	blogs.rch.org.au
203.16.41.204	PTR	cats.mcri.edu.au
203.16.41.204	A	ann.org.au
203.16.41.204	A	headcheck.com.au
203.16.41.212	A	servicedesk.mcri.edu.au
203.16.41.212	A	kb.mcri.edu.au
203.16.41.212	A	donate.mcri.edu.au
203.16.41.214	A	2000stories.org.au
203.16.41.219	A	saefvic.org.au
203.16.41.219	A	aefican.org.au
203.16.41.228	A	mx1.mcri.edu.au