Robtex

Up: 203.18.20.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.18.20.0/25
Down right: 203.18.20.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.18.20.2	A+PTR	ice.netcore.com.au
203.18.20.3	A+PTR	rain.netcore.com.au
203.18.20.3	A	mail.netcore.com.au
203.18.20.3	A	gw.netcore.com.au
203.18.20.10	PTR	exchange.webworks.com.au
203.18.20.12	A	powakaddy.com.au
203.18.20.12	A	frankduketrees.com
203.18.20.12	A	ubucommunications.com
203.18.20.19	A+PTR	exchange.netcore.com.au
203.18.20.25	A	optus.netcore.com.au
203.18.20.26	A	kenny.netcore.com.au
203.18.20.30	A	mailman.netcore.com.au
203.18.20.48	PTR	www.netcore.com.au
203.18.20.48	A	powakaddy.com.au
203.18.20.48	A	ubucommunications.com
203.18.20.49	A	ssl.netcore.com.au
203.18.20.49	A	secure.thefinancialfence.com
203.18.20.50	A	ncs-nt.nationalcomputers.com.au
203.18.20.51	A	line1.netcore.com.au
203.18.20.52	PTR	www.linenmoore.com.au
203.18.20.54	PTR	www.coolgalah.com.au
203.18.20.54	A	coolgalah.com.au
203.18.20.55	PTR	line5.netcore.com.au
203.18.20.56	A	abndirect.com.au
203.18.20.57	A+PTR	line7.netcore.com.au
203.18.20.57	A	www.echidnawalkabout.com.au
203.18.20.57	A	echidnawalkabout.com.au
203.18.20.58	PTR	line8.netcore.com.au
203.18.20.58	A	koalaclancyfoundation.org.au
203.18.20.58	A	www.koalaclancyfoundation.org.au
203.18.20.59	A+PTR	line9.netcore.com.au
203.18.20.59	A	elkgolf.com
203.18.20.60	A+PTR	line10.netcore.com.au
203.18.20.60	A	powerongolf.com.au
203.18.20.61	A	line11.netcore.com.au
203.18.20.64	A	line14.netcore.com.au
203.18.20.65	A	melbourneviptours.com.au
203.18.20.70	A	line20.netcore.com.au
203.18.20.72	A+PTR	line22.netcore.com.au
203.18.20.75	A	line25.netcore.com.au
203.18.20.102	PTR	webworks.com.au
203.18.20.104	PTR	barcrusher.com.au
203.18.20.105	A+PTR	rcpaqapa.netcore.com.au
203.18.20.106	A+PTR	runnersworld.com.au
203.18.20.121	A+PTR	shop.theworldgame.com.au
203.18.20.124	A	statistical.com.au
203.18.20.125	A	womensactionalliance.com.au
203.18.20.126	PTR	kenchong.com.au
203.18.20.128	A+PTR	melbmap.com.au
203.18.20.128	A	www.melbmap.com.au
203.18.20.139	A+PTR	zeolite.com.au
203.18.20.142	PTR	derivative.com.au
203.18.20.143	PTR	trendz.com.au
203.18.20.156	A	obandp.com.au
203.18.20.161	A	ssl.netcore.com.au
203.18.20.166	PTR	acllab.com.au
203.18.20.169	A+PTR	rogergould.com.au
203.18.20.172	A	emubottom.com.au
203.18.20.177	A	bugsbgone.com.au
203.18.20.183	A+PTR	millsomhoists.com.au
203.18.20.185	PTR	labworks.com.au
203.18.20.186	A+PTR	paulclarkecreative.com.au
203.18.20.188	A+PTR	artspectrum.com.au
203.18.20.196	PTR	primeconsulting.com.au
203.18.20.199	PTR	elajon.com.au
203.18.20.204	A+PTR	winnerscirclestables.com.au
203.18.20.212	A+PTR	yican.com.au
203.18.20.213	A+PTR	industricoat.com.au
203.18.20.221	PTR	cristyspitroast.com.au
203.18.20.222	A+PTR	magcore.com.au
203.18.20.223	PTR	bdb.com.au
203.18.20.224	PTR	geicp.com
203.18.20.227	PTR	ilaa.com.au
203.18.20.236	PTR	afya.com
203.18.20.253	A+PTR	linksys.netcore.com.au
203.18.20.254	A	gateway.netcore.com.au