Robtex

Up: 203.87.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.87.20.0/23
Down right: 203.87.22.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.87.21.33	PTR	33.21.87.203.static.sa.chariot.net.au
203.87.21.33	A	mail.cartercorporation.com.au
203.87.21.86	A+PTR	remote.djc.com.au
203.87.21.101	A	gethelp.it
203.87.21.103	PTR	203-87-21-103.tpgi.com.au
203.87.21.103	A	mxbackup.cititec.com.au
203.87.21.137	A	www.arcitecta.com
203.87.21.154	PTR	203-87-21-154.tpgi.com.au
203.87.21.154	A	mail.mermaidcleaning.com.au
203.87.21.253	PTR	253.21.87.203.static.sa.chariot.net.au
203.87.21.253	A	chapleygroup.com.au
203.87.21.253	A	mail.yourfoodland.com
203.87.22.4	A+PTR	dns1.chariot.net.au
203.87.22.4	A	dns.chariot.net.au
203.87.22.4	A	dns3.chariot.net.au
203.87.23.4	A+PTR	dns2.chariot.net.au
203.87.23.4	A	dns2.chariot.com.au
203.87.23.4	A	dns2.eventsballarat.com