Robtex

Up: 123.243.40.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 123.243.40.0/24
Down right: 123.243.41.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
123.243.40.23	A+PTR	mail.in2business.com.au
123.243.40.120	PTR	123-243-40-120.static.tpgi.com.au
123.243.40.120	A	mail.compliancewhs.com.au
123.243.40.120	A	mail.complianceohs.com.au
123.243.40.150	A	123-243-40-150.tpgi.com.au
123.243.40.153	PTR	123-243-40-153.static.tpgi.com.au
123.243.40.153	A	eyeq.com.au
123.243.41.22	A	123-243-41-22.static.tpgi.com.au
123.243.41.37	A	promisewatcher.com
123.243.41.37	A	mail.itshouldbefree.com
123.243.41.37	A	isbf1.itshouldbefree.com
123.243.41.80	A	123-243-41-80.tpgi.com.au
123.243.41.81	A+PTR	123-243-41-81.static.tpgi.com.au
123.243.41.88	PTR	mail.robles.com.au
123.243.41.88	A	robles.com.au
123.243.41.145	PTR	123-243-41-145.static.tpgi.com.au
123.243.41.145	A	mail.priorityplusplumbing.com.au
123.243.41.168	PTR	piko.openlink.com.au
123.243.41.168	A	nano.predloge.com
123.243.41.168	A	www.openlink.com.au
123.243.41.175	PTR	123-243-41-175.static.tpgi.com.au
123.243.41.175	A	mail.stpatssutherland.org.au
123.243.41.223	A	123-243-41-223.static.tpgi.com.au
123.243.41.224	A+PTR	123-243-41-224.static.tpgi.com.au
123.243.41.224	A	visionlp.net.au
123.243.41.224	A	vlpgroup.com.au
123.243.41.243	PTR	mail.avrevolution.com.au