Robtex

Up: 220.244.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 220.244.20.0/23
Down right: 220.244.22.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
220.244.21.144	A+PTR	220-244-21-144.tpgi.com.au
220.244.21.227	A+PTR	220-244-21-227.tpgi.com.au
220.244.23.23	A	mx2.ipsg.com.au
220.244.23.29	A	mail.bcanational.com.au
220.244.23.29	A	mail.bcanational.com
220.244.23.54	PTR	efaspam01.mcadsl.com
220.244.23.54	A	ns3.wiphosting.net
220.244.23.54	A	ns12.netgecko.com.au
220.244.23.89	A	mail.absa.net.au
220.244.23.92	A+PTR	mail.absa.net.au
220.244.23.98	A	mail.duraflexgroup.com.au
220.244.23.106	PTR	220-244-23-106.static.tpgi.com.au
220.244.23.106	A	sourceinstinct.com
220.244.23.106	A	ddrit.info
220.244.23.122	A	mail.nrc.nsw.gov.au
220.244.23.130	PTR	mail.theorthopractice.com.au
220.244.23.130	A	mail.orthopractice.com.au
220.244.23.193	A+PTR	220-244-23-193.static.tpgi.com.au
220.244.23.193	A	220-244-23-193.tpgi.com.au
220.244.23.226	A+PTR	mail.germany.org.au
220.244.23.250	A+PTR	220-244-23-250.static.tpgi.com.au
220.244.23.254	A+PTR	mail.wish.com.au
220.244.23.254	A	mail2.wish.com.au