Robtex

Up: 123.243.96.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 123.243.100.0/23
Down right: 123.243.102.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
123.243.100.17	A+PTR	123-243-100-17.tpgi.com.au
123.243.100.68	A	secure.imperialcrest.com.au
123.243.100.94	A+PTR	123-243-100-94.tpgi.com.au
123.243.100.124	A+PTR	123-243-100-124.tpgi.com.au
123.243.100.143	A	123-243-100-143.tpgi.com.au
123.243.100.181	PTR	undercat.net
123.243.100.181	A	mail.undercat.net
123.243.100.181	A	trup16.net
123.243.100.187	PTR	123-243-100-187.tpgi.com.au
123.243.100.187	A	mailbox.amgcad.com
123.243.100.208	A	slyfox.net.au
123.243.100.214	A	123-243-100-214.tpgi.com.au
123.243.100.220	A	123-243-100-220.tpgi.com.au
123.243.101.33	A+PTR	123-243-101-33.static.tpgi.com.au
123.243.101.33	A	phaedrus.lucidsw.com.au
123.243.101.149	A	battletron.com
123.243.101.240	A	mail.collabspaces.com
123.243.102.29	A	123-243-102-29.static.tpgi.com.au
123.243.102.50	PTR	123-243-102-50.static.tpgi.com.au
123.243.102.52	PTR	123-243-102-52.static.tpgi.com.au
123.243.102.52	A	codepleb.com
123.243.102.73	A	mitchkarafili.com.au
123.243.102.91	A+PTR	123-243-102-91.static.tpgi.com.au
123.243.102.224	A+PTR	123-243-102-224.static.tpgi.com.au
123.243.103.7	A	sambhodi.org
123.243.103.12	A+PTR	123-243-103-12.static.tpgi.com.au
123.243.103.30	A	visualsynth.com
123.243.103.30	A	newlife-movie.com
123.243.103.43	PTR	123-243-103-43.static.tpgi.com.au
123.243.103.123	A+PTR	123-243-103-123.static.tpgi.com.au
123.243.103.146	A+PTR	123-243-103-146.static.tpgi.com.au
123.243.103.161	A+PTR	123-243-103-161.static.tpgi.com.au
123.243.103.161	A	blaze.awd.com.au
123.243.103.161	A	blaze.awebd.com.au
123.243.103.216	A	server.domoneyarchitecture.com
123.243.103.234	PTR	manwithavan.com.au