Robtex

Up: 220.233.228.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 220.233.230.0/24
Down right: 220.233.231.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
220.233.230.0	A+PTR	0.230.233.220.static.exetel.com.au
220.233.230.115	PTR	115.230.233.220.static.exetel.com.au
220.233.230.115	A	mail2.recruitadvantage.com.au
220.233.230.129	PTR	129.230.233.220.static.exetel.com.au
220.233.230.178	A+PTR	dust.sunshadeseyewear.com.au
220.233.230.178	A	mx01.systemredirect.net
220.233.230.178	A	mail2.sunshadeseyewear.com.au
220.233.230.179	PTR	mail.sunshadeseyewear.com.au
220.233.230.193	PTR	193.230.233.220.static.exetel.com.au
220.233.230.193	A	mail.berkleyapac.com
220.233.230.233	A+PTR	233.230.233.220.static.exetel.com.au
220.233.230.233	A	ns2.scsimice.com
220.233.230.233	A	expressrepairservices.com.au
220.233.230.237	PTR	237.230.233.220.static.exetel.com.au
220.233.230.237	A	exchange.fonebiz.com.au
220.233.231.0	A	0.231.233.220.static.exetel.com.au
220.233.231.12	A+PTR	12.231.233.220.static.exetel.com.au
220.233.231.12	A	mail.seoc.com.au
220.233.231.82	A+PTR	82.231.233.220.static.exetel.com.au
220.233.231.82	A	mail.hes.edu.au
220.233.231.161	PTR	161.231.233.220.static.exetel.com.au
220.233.231.161	A	mail.nswtf.org.au
220.233.231.167	A	167.231.233.220.static.exetel.com.au
220.233.231.220	A+PTR	220.231.233.220.static.exetel.com.au
220.233.231.220	A	mail.iee.com.au
220.233.231.220	A	mail.iopen.com.au
220.233.231.221	A+PTR	221.231.233.220.static.exetel.com.au
220.233.231.227	A	mail.chinatravel.com.au
220.233.231.228	A	cloud.chinatravel.com.au