Robtex

Up: 203.30.228.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 203.30.228.0/24
Down right: 203.30.229.0/24

IP	Type	Hostname
203.30.228.0	PTR	hosting.link1.com.au
203.30.228.7	A	mail.link1.com.au
203.30.228.18	A+PTR	mx2-nxm1-au.link1.com.au
203.30.228.19	A+PTR	mx1-nxm1-au.link1.com.au
203.30.228.19	A	smtp.link1.com.au
203.30.228.20	PTR	ex1-nxm1-au.link1.com.au
203.30.228.20	PTR	mail.link1.com.au
203.30.228.21	A	link1.com.au
203.30.228.22	A	ex2-nxm1-au.link1.com.au
203.30.228.23	A	ex3-nxm1-au.link1.com.au
203.30.228.24	PTR	mail.link1.com.au
203.30.228.50	A	mail.aboveleft.link1.com.au
203.30.228.51	A	aboveleft.link1.com.au
203.30.228.90	A	mail.netball.asn.au
203.30.228.151	A	thecareersgroup.com.au
203.30.228.151	A	fundedlearning.com.au
203.30.228.200	A	solveit.org
203.30.228.200	A	net2.co.za
203.30.228.200	A	mail.solveit.org
203.30.228.201	A+PTR	mx1.solveit.org
203.30.229.2	A	inet.communicat.com.au
203.30.229.4	A+PTR	dns-bris.cat.net.au
203.30.229.4	A	catsys.communicat.com.au
203.30.229.6	A+PTR	client-relay.cat.net.au
203.30.229.10	A	vpn.communicat.com.au
203.30.229.13	A	mail.communicat.com.au
203.30.229.20	A	cftest.communicat.com.au
203.30.229.21	PTR	mx3-ctmx-au.link1.com.au
203.30.229.21	A	mx3-ctm1-au.link1.com.au
203.30.229.29	A+PTR	bugzilla2.cat.net.au
203.30.229.29	A	git.cat.net.au
203.30.229.29	A	bugzilla.cat.net.au
203.30.229.34	A	git.cat.net.au
203.30.229.53	A+PTR	backup2.cat.net.au
203.30.229.255	PTR	brisbane-broadcast.cat.net.au