Robtex

Up: 203.16.208.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.16.208.0/25
Down right: 203.16.208.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.16.208.0	A+PTR	eth1.act.adsl.internode.on.net
203.16.208.16	A+PTR	eth17.act.adsl.internode.on.net
203.16.208.17	PTR	ns2.case.org.au
203.16.208.17	A	mail.communitylists.org.au
203.16.208.17	A	guymer.id.au
203.16.208.42	A+PTR	eth43.act.adsl.internode.on.net
203.16.208.53	PTR	eth54.act.adsl.internode.on.net
203.16.208.53	A	redback.lesmills.net.au
203.16.208.61	PTR	eth62.act.adsl.internode.on.net
203.16.208.61	A	mail.catholicwelfare.com.au
203.16.208.61	A	mail.centacare.com.au
203.16.208.73	A+PTR	eth74.act.adsl.internode.on.net
203.16.208.74	A	mail.answerz.com
203.16.208.83	PTR	eth84.act.adsl.internode.on.net
203.16.208.83	A	accessipcc.info
203.16.208.84	PTR	eth85.act.adsl.internode.on.net
203.16.208.84	A	publicknowledge.com.au
203.16.208.85	A+PTR	eth86.act.adsl.internode.on.net
203.16.208.85	A	qwert.net
203.16.208.85	A	flixco.info
203.16.208.93	A	mullion.group
203.16.208.95	A	mail.hostalpha.com.au
203.16.208.101	A	mail.ozpropertylaw.com.au
203.16.208.101	A	mail.ozpropertylaw.com
203.16.208.101	A	mail.nicholasdibb.com
203.16.208.140	A+PTR	mail.corverandco.com.au
203.16.208.140	A	mail.amato.com.au
203.16.208.144	A	mail.forresthotel.com
203.16.208.161	PTR	eth162.act.adsl.internode.on.net
203.16.208.172	A+PTR	eth173.act.adsl.internode.on.net
203.16.208.178	PTR	eth179.act.adsl.internode.on.net
203.16.208.178	A	act.nghenvironmental.com.au
203.16.208.190	A+PTR	eth191.act.adsl.internode.on.net
203.16.208.190	A	mail.energystrategies.com.au
203.16.208.192	A	eth193.act.adsl.internode.on.net
203.16.208.192	A	mail.stjohnscanberra.org
203.16.208.196	A+PTR	eth197.act.adsl.internode.on.net
203.16.208.201	A	mail.ozminers.club
203.16.208.202	A	ozminers.club
203.16.208.204	A	flickyourfood.com
203.16.208.210	A	mail.gardevie.com