Robtex

Up: 203.31.34.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.31.34.0/25
Down right: 203.31.34.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.31.34.0	A	au.viaip.com
203.31.34.7	PTR	203-31-34-7.au.viaip.com
203.31.34.8	PTR	203-31-34-8.au.viaip.com
203.31.34.10	A+PTR	webgw1.au.viaip.com
203.31.34.19	A	netops.au.viaip.com
203.31.34.32	PTR	203-31-34-32.au.viaip.com
203.31.34.34	PTR	oohopenvpn.oohopenvpn.com
203.31.34.34	PTR	mail.bcr.com.au
203.31.34.34	PTR	vpn.oohmedia.com.au
203.31.34.37	A	syd.millmaine.com.au
203.31.34.39	PTR	39.34.31.203.isphone.com.au
203.31.34.39	A	203-31-34-39.au.viaip.com
203.31.34.40	PTR	203-31-34-40.au.viaip.com
203.31.34.44	PTR	203-31-34-44.au.viaip.com
203.31.34.51	A	mail.guidedogs.com.au
203.31.34.64	PTR	203-31-34-64.au.viaip.com
203.31.34.70	PTR	203-31-34-70.au.viaip.com
203.31.34.71	PTR	203-31-34-71.au.viaip.com
203.31.34.74	PTR	203-31-34-74.au.viaip.com
203.31.34.75	PTR	203-31-34-75.au.viaip.com
203.31.34.81	PTR	203-31-34-81.au.viaip.com
203.31.34.84	PTR	mail.prestigeautobody.com.au
203.31.34.87	PTR	203-31-34-87.au.viaip.com
203.31.34.98	PTR	203-31-34-98.au.viaip.com
203.31.34.109	PTR	203-31-34-109.au.viaip.com
203.31.34.110	PTR	203-31-34-110.au.viaip.com
203.31.34.130	PTR	130.34.31.203.isphone.com.au
203.31.34.130	A	203-31-34-130.miss.net.au
203.31.34.138	A	aue.salvationarmy.org.au
203.31.34.140	PTR	203-31-34-140.au.viaip.com
203.31.34.141	PTR	203-31-34-141.au.viaip.com
203.31.34.147	PTR	203-31-34-147.au.viaip.com
203.31.34.158	A	mail.salvosdev.net
203.31.34.162	PTR	203-31-34-162.au.viaip.com
203.31.34.178	PTR	203-31-34-178.au.viaip.com
203.31.34.191	PTR	203-31-34-191.au.viaip.com
203.31.34.195	A+PTR	mailin1.au.viaip.com
203.31.34.195	A	mailin2.viaip.com
203.31.34.195	A	mailin1.viaip.com
203.31.34.199	PTR	extranet.oohmedia.com.au
203.31.34.199	PTR	signz.oohmedia.com.au
203.31.34.199	PTR	staging.oohmedia.com.au
203.31.34.200	PTR	mx-01.ses.au.viaip.com
203.31.34.200	A	mailin1.miss.net.au
203.31.34.200	A	mail1.miss.net.au
203.31.34.201	A+PTR	mx-01.ses.au.viaip.com
203.31.34.201	A	mx40.ses.au.viaip.com
203.31.34.201	A	mx30.ses.au.viaip.com
203.31.34.203	PTR	203-31-34-203.au.viaip.com
203.31.34.204	PTR	203-31-34-204.au.viaip.com
203.31.34.204	A	as38835.com
203.31.34.210	A+PTR	ns1.viaip.com
203.31.34.210	A	ns1.au.viaip.com
203.31.34.210	A	ns1.miss.net.au
203.31.34.211	A+PTR	ns2.viaip.com
203.31.34.211	A	ns2.miss.net.au
203.31.34.211	A	ns2.au.viaip.com
203.31.34.212	A	ns3.viaip.com
203.31.34.213	A	ns4.viaip.com
203.31.34.216	PTR	203-31-34-216.au.viaip.com
203.31.34.225	PTR	203-31-34-225.au.viaip.com
203.31.34.233	PTR	203-31-34-233.au.viaip.com
203.31.34.233	A	hurricanecompute.com.au
203.31.34.233	A	hurricanecomputer.com.au
203.31.34.237	PTR	203-31-34-237.au.viaip.com
203.31.34.243	PTR	203-31-34-243.au.viaip.com
203.31.34.243	A	viaip.com
203.31.34.243	A	miss.net.au
203.31.34.249	PTR	203-31-34-249.au.viaip.com