Robtex

Up: 203.213.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.213.8.0/23
Down right: 203.213.10.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.213.8.3	PTR	mail.bluezoo.com.au
203.213.8.3	A	mail.bluezoo.net.au
203.213.8.3	A	mail.gmdemo.com.au
203.213.8.38	A+PTR	remote.jupiterenergy.com
203.213.8.46	A	mail.datapel.com
203.213.8.66	PTR	203-213-8-66.static.tpgi.com.au
203.213.8.102	A	mail.primeprojects.net
203.213.8.130	A	mail.dcswa.com.au
203.213.8.178	A	mail.thegigshop.com.au
203.213.8.184	A	mail.tleng.com.au
203.213.8.187	PTR	203-213-8-187.static.tpgi.com.au
203.213.8.187	A	tleng.com.au
203.213.8.194	A	matera3.onthewifi.com
203.213.8.198	A+PTR	203-213-8-198.static.tpgi.com.au
203.213.8.198	A	mail.donrussellhomes.com.au
203.213.8.214	A	remote.atrumcoal.com
203.213.8.226	A	mail.cartridgeworld.com.au
203.213.8.230	A	remote.rsh.com.au
203.213.8.238	A+PTR	mx1.primeprojects.net.au
203.213.8.238	A	outlook.primeprojects.net.au
203.213.8.238	A	mail.primeprojects.net.au
203.213.8.254	PTR	203-213-8-254.static.tpgi.com.au
203.213.8.254	A	mail.saramaresources.com
203.213.10.2	PTR	203-213-10-2.tpgi.com.au
203.213.10.2	A	mta2.zetronaustralasia.com
203.213.10.97	A	vpn.fairlightau.com
203.213.10.98	PTR	203-213-10-98.static.tpgi.com.au
203.213.10.98	A	mail.fairlightau.com
203.213.10.98	A	mail.fairlight.com.au
203.213.10.99	PTR	203-213-10-99.static.tpgi.com.au
203.213.10.99	A	fairlight.com.au
203.213.10.144	A+PTR	203-213-10-144.static.tpgi.com.au
203.213.10.144	A	mail.secomtech.com.au
203.213.10.144	A	support.secomtech.com.au
203.213.10.145	PTR	203-213-10-145.static.tpgi.com.au
203.213.10.145	A	xchange.secomtech.com.au
203.213.10.148	A+PTR	203-213-10-148.static.tpgi.com.au
203.213.10.148	A	mail.oakdenehouse.org.au
203.213.10.148	A	cloudmail.secomtech.com.au
203.213.10.174	A	mail.theschoolphotographer.com.au
203.213.10.206	A	mail.mothprojects.com
203.213.10.218	PTR	mail.priorityplanners.com.au
203.213.10.218	A	203-213-10-218.tpgi.com.au
203.213.10.218	A	mail.themarxes.com.au
203.213.10.222	A	mail.primaplas.com
203.213.10.222	A	tpg.primaplas.com.au
203.213.10.230	A	mail.wincrest.com.au
203.213.10.254	PTR	203-213-10-254.static.tpgi.com.au
203.213.10.254	A	a72mbx01.mundipharma.com.au
203.213.11.2	A	203-213-11-2.tpgi.com.au
203.213.11.34	A	server1.nowrakubota.com.au
203.213.11.34	A	server1.canberrakubota.com.au
203.213.11.49	A+PTR	203-213-11-49.tpgi.com.au
203.213.11.102	A+PTR	mail.fanuli.com.au
203.213.11.114	A+PTR	mail.austcor.com
203.213.11.166	PTR	203-213-11-166.tpgi.com.au
203.213.11.166	A	mail.protocomtech.com.au
203.213.11.166	A	mail.protocomtechnology.com
203.213.11.170	PTR	203-213-11-170.tpgi.com.au
203.213.11.170	A	mail.p4ps.com.au
203.213.11.230	A	mail.calderflower.com.au
203.213.11.230	A	mx1.calderflower.com.au