Robtex

Up: 123.243.130.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 123.243.131.0/25
Down right: 123.243.131.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
123.243.131.5	A+PTR	123-243-131-5.static.tpgi.com.au
123.243.131.33	A+PTR	123-243-131-33.static.tpgi.com.au
123.243.131.37	A+PTR	123-243-131-37.static.tpgi.com.au
123.243.131.48	A	123-243-131-48.static.tpgi.com.au
123.243.131.50	A+PTR	123-243-131-50.static.tpgi.com.au
123.243.131.50	A	o-synce.com.au
123.243.131.50	A	bianchi.com.au
123.243.131.51	A	mail.awassociates.net
123.243.131.68	PTR	123-243-131-68.static.tpgi.com.au
123.243.131.76	A	123-243-131-76.static.tpgi.com.au
123.243.131.84	A	123-243-131-84.static.tpgi.com.au
123.243.131.86	A+PTR	123-243-131-86.static.tpgi.com.au
123.243.131.98	A+PTR	123-243-131-98.static.tpgi.com.au
123.243.131.116	PTR	123-243-131-116.static.tpgi.com.au
123.243.131.123	A	123-243-131-123.static.tpgi.com.au
123.243.131.145	A+PTR	123-243-131-145.static.tpgi.com.au
123.243.131.163	A	animalimports.dyndns.org
123.243.131.163	A	lancivil.dyndns.org
123.243.131.163	A	ochc.dyndns.org
123.243.131.183	A+PTR	123-243-131-183.static.tpgi.com.au