Robtex

Up: 203.57.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 203.57.128.0/21
Down right: 203.57.136.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.57.129.126	A+PTR	noc-gw.kal.gold.net.au
203.57.129.134	A	per.gold.net.au
203.57.129.134	A	emerge.net.au
203.57.129.134	A	cpceng.com.au
203.57.129.169	A+PTR	mail.ruc.com.au
203.57.129.185	A+PTR	mx.obe.net.au
203.57.129.185	PTR	mx-01.team.onlinebe.com.au
203.57.129.185	A	team.onlinebe.com.au
203.57.129.214	A	brentsplace.swanvalleywa.com
203.57.129.214	A	home.swanvalleywa.com
203.57.129.230	A+PTR	postoffice.kal.gold.net.au
203.57.129.230	A	mail.kal.gold.net.au
203.57.129.234	A	mail.saltlake.com.au
203.57.129.242	A+PTR	mx-01.gbmofficenational.com.au
203.57.129.242	PTR	cust-onk.gold.net.au
203.57.129.246	PTR	customer-web.gold.net.au
203.57.129.246	A	goldnet.com.au
203.57.129.246	A	ledgold.com.au
203.57.130.10	PTR	mail.kalbould.wa.gov.au
203.57.130.10	PTR	cust-cokb.gold.net.au
203.57.130.10	A	imap.ckb.wa.gov.au
203.57.130.33	A	mail.bega.org.au
203.57.133.2	A	mail.lightningnickel.com.au
203.57.134.2	A+PTR	ns-01.gold.net.au
203.57.134.2	A	ns1.emerge.net.au
203.57.134.10	A	mail.emerge.net.au
203.57.134.14	A+PTR	rsv-01.kal.gold.net.au
203.57.135.2	A+PTR	ns-02.gold.net.au
203.57.135.2	A	ns2.emerge.net.au
203.57.136.6	A+PTR	mail.easterngoldfields.com.au
203.57.136.10	PTR	mail.easterngoldfields.com.au
203.57.136.10	PTR	mail.deltaman.com.au
203.57.136.10	A+PTR	mail.redbankcopper.com.au
203.57.140.20	A	*.rubiconresources.com.au
203.57.140.20	A	mopl.com.au
203.57.140.20	A	patleightonfca.com.au
203.57.140.34	A	onk.com.au
203.57.140.227	A+PTR	mail3.saracen.com.au