Robtex

Up: 123.255.212.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 123.255.214.0/24
Down right: 123.255.215.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
123.255.215.209	A+PTR	mail.rslwahq.org.au
123.255.215.209	A	mail.rslwa.org.au
123.255.215.226	PTR	mercury.orionsat.net
123.255.215.228	PTR	pop.reachnet.com.au
123.255.215.228	A	orionsat.net
123.255.215.228	A	reachnet.com.au
123.255.215.237	A+PTR	ns0.orionsat.net
123.255.215.237	A	ns2.orionsat.net