Robtex

Up: 203.34.12.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.34.12.0/25
Down right: 203.34.12.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.34.12.7	A	ast.mcmedia.com.au
203.34.12.7	A	listserv.mcmedia.com.au
203.34.12.51	A+PTR	secure.mcmedia.com.au
203.34.12.51	A	ingv.mcmedia.com.au
203.34.12.51	A	localclassies.com
203.34.12.220	PTR	mail.mitchellshire.vic.gov.au