Robtex

Up: 203.18.38.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.18.39.0/25
Down right: 203.18.39.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.18.39.3	A+PTR	gw-syd-1.cch.com.au
203.18.39.6	A+PTR	charon.cch.com.au
203.18.39.22	A+PTR	mailhost.cch.com.au
203.18.39.42	A	cts-downloads.cch.com.au
203.18.39.67	A	cch.co.nz
203.18.39.68	A	sd.wkasiapacific.com
203.18.39.69	A	ww5.cch.com.au
203.18.39.70	A	cchprosystem.com.au
203.18.39.70	A	cchsoftware.com.au
203.18.39.70	A	cchtaxintegrator.com
203.18.39.90	A	cchindia.co.in
203.18.39.90	A	cchindia.in
203.18.39.104	PTR	mailhost.cch.com.au
203.18.39.109	A+PTR	cbjftp.cch.com.au
203.18.39.117	A	sharepoint.cch.com.au
203.18.39.123	A	proxy.cch.com.au
203.18.39.124	A+PTR	proxy2.cch.com.au
203.18.39.146	PTR	sametime.cch.com.au
203.18.39.160	A+PTR	apsrvau23924.cch.com.au
203.18.39.161	A	gw-syd-2.cch.com.au
203.18.39.168	A+PTR	apsrvau23903.cch.com.au
203.18.39.202	A	apsrvau23918.cch.com.au
203.18.39.204	A	wkapatlas.cch.com.au
203.18.39.235	A+PTR	exchange.bpsonline.com.au
203.18.39.235	A	mail.paperbuster.com.au