Robtex

Up: 123.243.210.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 123.243.210.0/25
Down right: 123.243.210.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
123.243.210.152	A+PTR	123-243-210-152.static.tpgi.com.au
123.243.210.152	A	mail.fullhecticninjas.com
123.243.210.185	A+PTR	123-243-210-185.static.tpgi.com.au
123.243.210.192	A+PTR	123-243-210-192.static.tpgi.com.au
123.243.210.192	A	acttech.com
123.243.210.192	A	hostmaster.acttech.com
123.243.210.246	A+PTR	123-243-210-246.static.tpgi.com.au