Robtex

Up: 202.81.0.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 202.81.4.0/23
Down right: 202.81.6.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
202.81.4.3	A+PTR	mail.rosecrown.com.au
202.81.4.3	A	mail2.rosecrown.com.au
202.81.4.3	A	remote.rosecrown.com.au
202.81.4.5	A+PTR	mail.hssptyltd.com.au
202.81.4.9	A	remote.joycekrane.com
202.81.4.14	A+PTR	remote.scwa.com.au
202.81.4.20	A	helena.wa.edu.au
202.81.4.20	A	mail.helena.wa.edu.au
202.81.4.20	A	mail.helenacollege.wa.edu.au
202.81.4.50	A	pyroholdings.dyndns.org
202.81.4.78	A	mail.tfsltd.com.au
202.81.4.99	A	mail.australce.com
202.81.4.115	PTR	yilgarn.wa.gov.au
202.81.4.131	A	ns3.astelnetworks.com
202.81.4.131	A	ns3.datacellinfo.com
202.81.4.131	A	ns3.berkah.co.id
202.81.5.5	A+PTR	brough.net.au
202.81.5.5	A	broughrealestate.com.au
202.81.5.5	A	jbrough.com.au
202.81.5.8	A+PTR	mail.christmasvolling.com.au
202.81.5.19	A	pyroholdings.dyndns.org
202.81.5.19	A	corpadmin.com.au
202.81.5.19	A	mail.corpadmin.com.au
202.81.5.23	A	proxy.wycliffe.nsw.edu.au
202.81.5.26	A	mail.cuzeno.com.au
202.81.5.50	A	mail.datacentral.net.au
202.81.5.50	A	mail.datacentral.com.au
202.81.5.54	A+PTR	mail.bigpicture.com
202.81.5.65	A	mail2.medowiecs.nsw.edu.au
202.81.5.66	PTR	intranet.medowiecs.nsw.edu.au
202.81.5.66	A	mail.medowiecs.nsw.edu.au
202.81.5.77	A+PTR	mail.vertikote.com.au
202.81.5.115	PTR	mail.premierillawarra.com.au
202.81.5.115	A	www.premierillawarra.com.au
202.81.5.115	A	premierillawarra.com.au
202.81.5.116	A	premiercharters.com.au
202.81.5.116	A	www.premiercharters.com.au
202.81.5.117	A	www.podpi.com.au
202.81.6.2	A+PTR	mail.qcc.net.au
202.81.6.6	A	nqxray.com
202.81.6.58	A	mail.southernclassiccars.com.au
202.81.6.151	A	heebie.com.au
202.81.6.197	A	mail.mcrail.com.au