Robtex

Up: 103.9.48.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 103.9.52.0/23
Down right: 103.9.54.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
103.9.52.68	PTR	103-9-52-68.anttel.com.au
103.9.52.69	PTR	103-9-52-69.anttel.com.au
103.9.52.73	A	webmail.thefolk.com
103.9.52.73	A	mailserver.thefolk.com
103.9.52.116	PTR	103-9-52-116.anttel.com.au
103.9.52.184	PTR	103-9-52-184.anttel.com.au
103.9.52.184	A	mail.134tow.com.au
103.9.52.184	A	mail.nationwidetowing.com.au
103.9.52.234	PTR	103-9-52-234.anttel.com.au
103.9.52.254	A+PTR	mail.gpsi.com.au
103.9.53.11	A	dc.pritaneo.com
103.9.53.19	PTR	103-9-53-19.anttel.com.au
103.9.53.19	A	ns1.anttel.net.au
103.9.53.19	A	ns01.anttel.com.au
103.9.53.38	PTR	mx.martinjonkersmotors.com.au
103.9.53.38	A	mx.cabooltureyamaha.com.au
103.9.53.38	A	mx.cabmoto.com.au
103.9.53.42	A	exchange.anttel.net.au
103.9.53.42	A	exchange.anttel.com.au
103.9.53.50	PTR	103-9-53-50.anttel.com.au
103.9.53.54	PTR	103-9-53-54.anttel.com.au
103.9.53.54	A	ns1.anttel.com.au
103.9.53.74	PTR	103-9-53-74.anttel.com.au
103.9.53.106	A	ns3.dnshostingservers.com
103.9.53.106	A	dns3.dnshostingservers.com
103.9.53.120	PTR	103-9-53-120.anttel.com.au
103.9.53.120	A	cpanelproduction.anttel.com.au
103.9.53.120	A	c21ballina.com.au
103.9.53.142	PTR	103-9-53-142.anttel.com.au
103.9.53.142	A	mail.channelt.com.au
103.9.53.146	A+PTR	mail.pl.com.au
103.9.53.146	A	mail.cc.net.au
103.9.53.162	PTR	103-9-53-162.anttel.com.au
103.9.53.162	A	remote.tlkpartners.com.au
103.9.53.182	PTR	103-9-53-182.anttel.com.au
103.9.53.230	A	mail-mx.axcess.com.au
103.9.54.17	PTR	103-9-54-17.anttel.com.au
103.9.54.26	A	printithere.com.au
103.9.54.26	A	myxtex.com
103.9.54.50	PTR	103-9-54-50.anttel.com.au
103.9.54.66	PTR	103-9-54-66.anttel.com.au
103.9.54.75	PTR	103-9-54-75.anttel.com.au
103.9.54.75	A	portalserver.com.au
103.9.54.76	A	portal-server.com.au
103.9.54.101	PTR	103-9-54-101.anttel.com.au
103.9.54.101	A	briggatemedical.com
103.9.54.101	A	patslide.com
103.9.54.183	PTR	103-9-54-183.anttel.com.au
103.9.55.23	A	vehiclecomponents.com.au
103.9.55.42	PTR	103-9-55-42.anttel.com.au
103.9.55.42	A	mail.nsaaust.com
103.9.55.42	A	mail.nsaintl.com
103.9.55.45	A	mail.myfuture-online.com
103.9.55.45	A	mail.netman.com.au
103.9.55.45	A	mail.welbournegroup.com
103.9.55.70	PTR	103-9-55-70.anttel.com.au
103.9.55.70	A	mail.spl.com.au
103.9.55.94	A	mail.prdleichhardt.com
103.9.55.94	A	mail.prdstrata.com
103.9.55.94	A	mail.mstreet.com.au
103.9.55.110	A+PTR	remote.zenra.com.au
103.9.55.110	PTR	mail.zenra.com.au
103.9.55.122	PTR	103-9-55-122.anttel.com.au
103.9.55.122	A	sarah.net.au
103.9.55.122	A	www.sarah.net.au
103.9.55.172	A	mxmail.eurekavillages.com.au
103.9.55.202	PTR	103-9-55-202.anttel.com.au
103.9.55.202	A	mail.ivgpl.com
103.9.55.229	A	conceptlogistics.com.au
103.9.55.254	A	mail2.tesselaar.net.au
103.9.55.255	PTR	103-9-55-255.anttel.com.au