Robtex

Up: 220.244.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 220.244.16.0/22
Down right: 220.244.20.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
220.244.16.139	A	220-244-16-139.static.tpgi.com.au
220.244.17.14	A	mail.fenixrealestate.com
220.244.17.14	A	220-244-17-14.static.tpgi.com.au
220.244.17.18	A	mail.yourhomeawayfromhome.com.au
220.244.17.34	A	220-244-17-34.static.tpgi.com.au
220.244.17.116	A	220-244-17-116.static.tpgi.com.au
220.244.17.162	A	mail.h2hfinishes.com.au
220.244.17.200	A	220-244-17-200.static.tpgi.com.au
220.244.18.111	A	220-244-18-111.static.tpgi.com.au
220.244.19.26	A+PTR	220-244-19-26.static.tpgi.com.au
220.244.19.26	A	mail.evc.net.au
220.244.19.62	A	mail.planit.net.au
220.244.19.65	A+PTR	220-244-19-65.static.tpgi.com.au
220.244.19.65	A	staff.planit.net.au
220.244.19.68	A+PTR	220-244-19-68.static.tpgi.com.au
220.244.19.174	A	mail.techpatrol.com.au
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