Robtex

Up: 203.58.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 203.58.32.0/21
Down right: 203.58.40.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.58.32.1	A	dns1.ninemsn.com.au
203.58.32.2	A	dns2.ninemsn.com.au
203.58.36.39	A	c39.36.58.203.satellite.bigpond.com
203.58.36.61	A	c61.36.58.203.satellite.bigpond.com
203.58.36.65	A+PTR	c65.36.58.203.satellite.bigpond.com
203.58.36.97	A+PTR	c97.36.58.203.satellite.bigpond.com
203.58.36.112	A+PTR	c112.36.58.203.satellite.bigpond.com
203.58.36.127	A	c127.36.58.203.satellite.bigpond.com
203.58.36.138	A	c138.36.58.203.satellite.bigpond.com
203.58.36.190	A	c190.36.58.203.satellite.bigpond.com
203.58.36.218	A	c218.36.58.203.satellite.bigpond.com
203.58.36.237	A	c237.36.58.203.satellite.bigpond.com
203.58.37.110	A	c110.37.58.203.satellite.bigpond.com
203.58.39.6	A	c6.39.58.203.satellite.bigpond.com
203.58.39.153	A	kensell.com.au
203.58.39.244	A	c244.39.58.203.satellite.bigpond.com
203.58.41.223	A	mail1.downeredi.com.au
203.58.41.223	A	mail1.downerediengineering.com.au
203.58.41.223	A	mail1.downergroup.com
203.58.41.224	A	mail3.downergroup.com
203.58.41.224	A	mail3.downeredi.com.au
203.58.41.225	PTR	mail2.downerediengineering.com.au
203.58.41.225	A	mail2.downeredi.com.au
203.58.44.15	A+PTR	ns1.downerengineering.com.au
203.58.44.15	A	ns1.downerediengineering.com.au
203.58.44.18	A	csg.downerengineering.com.au
203.58.44.21	A	nfuse.downerengineering.com.au
203.58.44.40	A	mx1.downerengineering.com.au
203.58.44.40	A	mail-deg.corke.com.au
203.58.44.40	A	mx01.downerengineering.com.au
203.58.44.51	PTR	de-gla-pix-dmz-pool-002.deit.net.au