Robtex

Up: 123.243.224.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 123.243.224.0/25
Down right: 123.243.224.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
123.243.224.63	A+PTR	123-243-224-63.static.tpgi.com.au
123.243.224.71	PTR	123-243-224-71.static.tpgi.com.au
123.243.224.75	PTR	123-243-224-75.static.tpgi.com.au
123.243.224.75	A	mail.genesysit.com.au
123.243.224.75	A	ns1.genesysit.com.au
123.243.224.95	A+PTR	123-243-224-95.static.tpgi.com.au
123.243.224.100	A+PTR	123-243-224-100.static.tpgi.com.au
123.243.224.111	A+PTR	123-243-224-111.static.tpgi.com.au
123.243.224.113	A+PTR	123-243-224-113.static.tpgi.com.au
123.243.224.147	A+PTR	123-243-224-147.static.tpgi.com.au
123.243.224.147	A	mail.unixservice.com.au
123.243.224.147	A	naomi.unixservice.com.au
123.243.224.168	A+PTR	123-243-224-168.static.tpgi.com.au
123.243.224.177	A+PTR	123-243-224-177.static.tpgi.com.au
123.243.224.184	A+PTR	123-243-224-184.static.tpgi.com.au
123.243.224.198	A+PTR	123-243-224-198.static.tpgi.com.au
123.243.224.216	A+PTR	123-243-224-216.static.tpgi.com.au
123.243.224.220	A+PTR	123-243-224-220.static.tpgi.com.au
123.243.224.241	A+PTR	123-243-224-241.static.tpgi.com.au