Robtex

Up: 123.243.232.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 123.243.236.0/23
Down right: 123.243.238.0/23

IP	Type	Hostname
123.243.236.11	A+PTR	123-243-236-11.static.tpgi.com.au
123.243.236.18	A+PTR	123-243-236-18.static.tpgi.com.au
123.243.236.22	A	adamcolinna.com
123.243.236.81	A	123-243-236-81.static.tpgi.com.au
123.243.236.122	A+PTR	123-243-236-122.static.tpgi.com.au
123.243.236.123	A+PTR	123-243-236-123.static.tpgi.com.au
123.243.236.178	PTR	mail.durackmc.com.au
123.243.238.74	A+PTR	123-243-238-74.static.tpgi.com.au
123.243.238.75	PTR	123-243-238-75.static.tpgi.com.au
123.243.238.75	A	mail.redcliffersl.com.au
123.243.238.131	A	mail.mitchellrealestate.com.au
123.243.239.13	A	123-243-239-13.static.tpgi.com.au
123.243.239.53	A	123-243-239-53.static.tpgi.com.au
123.243.239.56	A	123-243-239-56.static.tpgi.com.au
123.243.239.69	A	123-243-239-69.static.tpgi.com.au
123.243.239.76	A	123-243-239-76.static.tpgi.com.au
123.243.239.91	A	123-243-239-91.static.tpgi.com.au
123.243.239.116	A+PTR	123-243-239-116.static.tpgi.com.au
123.243.239.137	A	123-243-239-137.static.tpgi.com.au
123.243.239.209	A	mail.bfmp.net.au
123.243.239.225	A+PTR	123-243-239-225.static.tpgi.com.au
123.243.239.225	A	ns2.valhalla.ws