Robtex

Up: 123.243.208.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 123.243.212.0/23
Down right: 123.243.214.0/23

IP	Type	Hostname
123.243.212.99	A+PTR	123-243-212-99.static.tpgi.com.au
123.243.212.109	A	123-243-212-109.static.tpgi.com.au
123.243.212.152	A	123-243-212-152.static.tpgi.com.au
123.243.212.185	A+PTR	123-243-212-185.static.tpgi.com.au
123.243.212.251	A+PTR	123-243-212-251.static.tpgi.com.au
123.243.213.130	A	123-243-213-130.static.tpgi.com.au
123.243.213.153	A	dubbrothers.net
123.243.213.205	PTR	123-243-213-205.static.tpgi.com.au
123.243.213.205	A	mail.eldridgedatasystems.com.au
123.243.213.232	A	ljhq.net
123.243.214.21	A	123-243-214-21.static.tpgi.com.au
123.243.214.25	A	123-243-214-25.static.tpgi.com.au
123.243.214.50	PTR	123-243-214-50.static.tpgi.com.au
123.243.214.57	A+PTR	123-243-214-57.static.tpgi.com.au
123.243.214.76	A+PTR	123-243-214-76.static.tpgi.com.au
123.243.214.98	A+PTR	123-243-214-98.static.tpgi.com.au
123.243.214.153	A+PTR	123-243-214-153.static.tpgi.com.au
123.243.214.169	A+PTR	123-243-214-169.static.tpgi.com.au
123.243.214.177	A+PTR	123-243-214-177.static.tpgi.com.au
123.243.214.184	A+PTR	123-243-214-184.static.tpgi.com.au
123.243.214.185	A+PTR	123-243-214-185.static.tpgi.com.au
123.243.214.187	A+PTR	123-243-214-187.static.tpgi.com.au
123.243.214.189	A+PTR	123-243-214-189.static.tpgi.com.au
123.243.214.202	A+PTR	123-243-214-202.static.tpgi.com.au
123.243.214.233	A+PTR	123-243-214-233.static.tpgi.com.au
123.243.214.249	A+PTR	123-243-214-249.static.tpgi.com.au
123.243.215.70	A+PTR	123-243-215-70.static.tpgi.com.au
123.243.215.70	A	tez.id.au
123.243.215.82	A	toomanygigaflops.com
123.243.215.92	PTR	123-243-215-92.static.tpgi.com.au
123.243.215.158	A+PTR	123-243-215-158.static.tpgi.com.au
123.243.215.158	A	office.gunlake.com.au
123.243.215.182	PTR	123-243-215-182.static.tpgi.com.au
123.243.215.182	A	remote.dripsanddrains.com.au
123.243.215.185	A+PTR	123-243-215-185.static.tpgi.com.au
123.243.215.212	A	haynesclan.com