Robtex

Up: 123.243.248.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 123.243.252.0/23
Down right: 123.243.254.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
123.243.252.23	A	pcmail.com.au
123.243.252.50	PTR	123-243-252-50.static.tpgi.com.au
123.243.252.50	A	mail.jbncs.com
123.243.252.50	A	mail.brightnet.net.au
123.243.252.72	A+PTR	123-243-252-72.static.tpgi.com.au
123.243.252.98	PTR	123-243-252-98.static.tpgi.com.au
123.243.252.98	A	mail.niazkitchens.com
123.243.252.118	A	mail.acbridge.com.au
123.243.252.142	A+PTR	123-243-252-142.tpgi.com.au
123.243.252.142	A	123-243-252-142.static.tpgi.com.au
123.243.252.170	A	123-243-252-170.static.tpgi.com.au
123.243.252.182	A+PTR	mail.fallsdell.com.au
123.243.252.204	A	mail.dollak.com
123.243.252.204	A	dollak.com
123.243.252.252	PTR	123-243-252-252.static.tpgi.com.au
123.243.252.252	A	mail.magentagolf.com.au
123.243.253.21	A	mail.garlandengineering.com.au
123.243.253.66	PTR	123-243-253-66.static.tpgi.com.au
123.243.253.66	A	mail.clements.net.au
123.243.253.66	A	mail.rrtaylor.com.au
123.243.253.141	PTR	123-243-253-141.static.tpgi.com.au
123.243.253.185	PTR	mail.lbau.com.au
123.243.253.185	A	lbau.com.au
123.243.253.217	A	russellhome.com
123.243.253.217	A	itprojectcoaching.com
123.243.253.248	PTR	123-243-253-248.static.tpgi.com.au
123.243.253.248	A	mail.herbertpartners.com.au
123.243.254.61	PTR	123-243-254-61.static.tpgi.com.au
123.243.254.105	A	123-243-254-105.static.tpgi.com.au
123.243.254.117	A	wilsonna.com
123.243.255.27	A	gateoflife.com.au
123.243.255.39	A	www.databasegurus.com
123.243.255.39	A	ex.dbgurus.com.au
123.243.255.103	A	123-243-255-103.static.tpgi.com.au
123.243.255.156	A	farmworks.net.au
123.243.255.187	A	mail.pathwayfinancial.com.au
123.243.255.187	A	mail.pathwayaccounting.com.au
123.243.255.197	PTR	123-243-255-197.static.tpgi.com.au
123.243.255.208	A+PTR	123-243-255-208.static.tpgi.com.au
123.243.255.242	A+PTR	mail.dwyer-inst.com.au
123.243.255.255	PTR	123-243-255-255.static.tpgi.com.au