Robtex

Up: 203.58.18.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.58.18.0/25
Down right: 203.58.18.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.58.18.1	A	wag-gw.tpgi.com.au
203.58.18.12	PTR	203-58-18-012.static.tpgi.com.au
203.58.18.58	A+PTR	mail.rgis.com.au
203.58.18.58	A	www.rgis.com.au
203.58.18.58	A	rgis.co.nz
203.58.18.90	PTR	203-58-18-090.static.tpgi.com.au
203.58.18.105	A+PTR	203-58-18-105.static.tpgi.com.au
203.58.18.106	A+PTR	203-58-18-106.static.tpgi.com.au
203.58.18.107	A+PTR	203-58-18-107.static.tpgi.com.au
203.58.18.136	A	203-58-18-136.static.tpgi.com.au
203.58.18.147	A+PTR	203-58-18-147.static.tpgi.com.au
203.58.18.153	A+PTR	203-58-18-153.static.tpgi.com.au
203.58.18.182	A+PTR	203-58-18-182.static.tpgi.com.au
203.58.18.186	A+PTR	203-58-18-186.static.tpgi.com.au
203.58.18.188	PTR	203-58-18-188.static.tpgi.com.au
203.58.18.188	A	lkp2.racingvictoria.com
203.58.18.196	A	203-58-18-196.static.tpgi.com.au
203.58.18.203	A	src.racingvictoria.net.au
203.58.18.208	A	www1.racingvictoria.net.au
203.58.18.227	PTR	mail.racingvictoria.net.au
203.58.18.232	A+PTR	bareed.racingvictoria.net.au
203.58.18.232	A	mail02.racing.com
203.58.18.232	A	mail2.winningpost.com.au
203.58.18.243	A+PTR	203-58-18-243.static.tpgi.com.au