Robtex

Up: 203.217.16.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 203.217.16.0/24
Down right: 203.217.17.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.217.16.1	A+PTR	ar-2-1.syd.hosted-servers.net
203.217.16.2	A	voip-1.syd.hosted-servers.net
203.217.16.14	A	alan.tdknights.com
203.217.16.18	A+PTR	smtp01.quantumsoftware.com.au
203.217.16.36	PTR	websitemanager.com.au
203.217.16.36	A	manage-it.com.au
203.217.16.36	A	cognito-online.com
203.217.16.43	PTR	203-217-16-43.perm.iinet.net.au
203.217.16.43	A	mail2.pnpsolutions.net
203.217.16.69	PTR	mail.iicp.com.au
203.217.16.69	A	mail.linkwm.com.au
203.217.16.97	A+PTR	203-217-16-97.perm.iinet.net.au
203.217.16.100	PTR	203-217-16-100.perm.iinet.net.au
203.217.16.100	A	mx.privacy.direct
203.217.16.100	A	www.cchoice.net
203.217.16.103	A	mail.accessfm.net
203.217.16.112	A	en-0-bl-1.sc-ma.net
203.217.16.113	A	en-0-bl-2.sc-ma.net
203.217.16.114	A	en-0-bl-3.sc-ma.net
203.217.16.115	A	en-0-bl-4.sc-ma.net
203.217.16.122	PTR	203-217-16-122.perm.iinet.net.au
203.217.16.122	A	e1-b3-d3.teleus.net
203.217.16.124	PTR	203-217-16-124.perm.iinet.net.au
203.217.16.124	A	en1-cl1-z3.privacydirect.net
203.217.16.146	A+PTR	www.webprint.net.au
203.217.16.146	A	webprint.net.au
203.217.16.153	A+PTR	203-217-16-153.perm.iinet.net.au
203.217.16.153	A	mail.westernweekender.com.au
203.217.16.153	A	mail1.realsavings.com.au
203.217.16.158	PTR	203-217-16-158.perm.iinet.net.au
203.217.16.158	A	mail.realmedia.com.au
203.217.16.158	A	mail.spotpress.com
203.217.16.162	A	vividinsights.com.au
203.217.16.222	PTR	203-217-16-222.perm.iinet.net.au
203.217.16.222	A	ns2.lookupdns.com.au
203.217.16.245	A	rmfsecurity.com.au
203.217.17.2	PTR	203-217-17-2.perm.iinet.net.au
203.217.17.8	PTR	mail.zero45.com
203.217.17.11	PTR	ns2.au2.com
203.217.17.21	A	mail.50centcloud.com
203.217.17.21	A	50centcloud.com
203.217.17.22	A+PTR	mail.neuronworks.com
203.217.17.34	A+PTR	203-217-17-34.perm.iinet.net.au
203.217.17.34	A	app01.lpac.com.au
203.217.17.34	A	a-link.com.au
203.217.17.37	A+PTR	ar-1-1.syd.hosted-servers.net
203.217.17.40	PTR	gekko.gasweldpenrith.com.au
203.217.17.46	A	csmarketing.com.au
203.217.17.75	PTR	app01.lpac.com.au
203.217.17.77	PTR	203-217-17-77.perm.iinet.net.au
203.217.17.77	A	remote.it-ss.com.au
203.217.17.77	A	mail.it-ss.com.au
203.217.17.89	A	arthurthornton.com
203.217.17.89	A	actionartphoto.com
203.217.17.89	A	askmedia.com.au
203.217.17.92	A+PTR	203-217-17-92.perm.iinet.net.au
203.217.17.98	A	mail.sea-english.com
203.217.17.114	PTR	remote.tapnet.com.au
203.217.17.114	A	bizintel.com.au
203.217.17.114	A	mail.tapnet.com.au
203.217.17.118	A+PTR	ift.com.au
203.217.17.118	A	mail.ift.com.au
203.217.17.126	A	storeserver-12.com
203.217.17.136	A	externus.tech-support.com.au
203.217.17.143	A	netitgroup.com.au
203.217.17.145	PTR	203-217-17-145.perm.iinet.net.au
203.217.17.145	A	mail.drillersworld.com.au
203.217.17.149	PTR	www.ozgames.com.au
203.217.17.149	A	procyclingseries.com
203.217.17.149	A	mail.bclp.com.au
203.217.17.151	PTR	coffee.homeunix.net
203.217.17.151	A	203-217-17-151.perm.iinet.net.au
203.217.17.162	PTR	203-217-17-162.perm.iinet.net.au
203.217.17.162	A	sbserver.tinytribe.com.au
203.217.17.165	PTR	mail.moxy.com.au
203.217.17.165	A	mail.colourpres.com.au
203.217.17.168	PTR	203-217-17-168.perm.iinet.net.au
203.217.17.168	A	remote.famitchell.com.au
203.217.17.171	A	mail.radincon.com.au
203.217.17.174	A+PTR	203-217-17-174.perm.iinet.net.au
203.217.17.175	PTR	vps.com.au
203.217.17.175	A	mail.vitalps.com.au
203.217.17.177	A	mail.cyberdweller.net
203.217.17.178	A	mail.mrburak.net
203.217.17.181	A+PTR	websitemanager.com.au
203.217.17.181	A	businessbites.com.au
203.217.17.181	A	mail.websitemanager.com.au
203.217.17.183	PTR	ns2.xsso.com.au
203.217.17.187	PTR	webmail.adre.com.au
203.217.17.187	A	mail.adre.com.au
203.217.17.199	A+PTR	mail.fs.com.au
203.217.17.206	A	mail2.grandcoral.com
203.217.17.206	A	iinet.grandcoralaustralia.com.au
203.217.17.216	PTR	marckean.com
203.217.17.241	PTR	203-217-17-241.perm.iinet.net.au
203.217.17.241	A	mail.fireflyinteractive.com
203.217.17.241	A	mail.fireflyinteractive.net
203.217.17.248	A	mail.darlingbrands.com
203.217.17.248	A	server.darlingbrands.com
203.217.17.251	A	www.ezitrack2.com
203.217.17.254	PTR	203-217-17-254.perm.iinet.net.au
203.217.17.254	A	infinight-email.infinight.net.au
203.217.17.254	A	prayertalk.community