Robtex

Up: 27.100.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 27.100.0.0/22
Down right: 27.100.4.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
27.100.0.1	PTR	syd1-igw1.lanier.com.au
27.100.0.1	A	0.100.27.in-addr.arpa
27.100.0.64	A	admin.mydi.com.au
27.100.0.65	A+PTR	cloud.mydi.com.au
27.100.0.68	A	beavereng.com.au
27.100.0.68	A	taylorau.com.au
27.100.0.72	PTR	syd1-www2.mydi.com.au
27.100.0.73	A	receiver.mydi.com.au
27.100.0.75	A	orion.inspireit.com.au
27.100.0.81	A	vcloud.mydi.com.au
27.100.0.149	A	mail.inspireit.com.au
27.100.0.152	A+PTR	ns1.mydi.com.au
27.100.0.152	A	dns0.imc.net.au
27.100.0.152	A	ns1.inspireit.com.au
27.100.0.211	A	saviit.com.au
27.100.0.219	A+PTR	mail.wymap.com.au
27.100.0.219	A	mail.securelogistics.com.au
27.100.0.219	A	server.wymap.com.au
27.100.0.241	A	webmail.jeminex.com
27.100.1.1	PTR	syd1-igw.ricoh.com.au
27.100.1.1	A	1.100.27.in-addr.arpa
27.100.1.2	PTR	27-100-1-2.rev.ricohitservices.com.au
27.100.1.21	A	msp.inspireit.com.au
27.100.1.34	A	exchange.campquality.org.au
27.100.1.34	A	mail.campquality.org.au
27.100.1.42	PTR	27-100-1-42.rev.ricohitservices.com.au
27.100.1.81	A+PTR	mail.agha.com.au
27.100.1.81	A	mail.homeandgiving.com
27.100.1.85	PTR	agha.com.au
27.100.1.85	A	www.agha.com.au
27.100.1.86	A	thehollowlog.com.au
27.100.2.1	A	2.100.27.in-addr.arpa
27.100.3.1	A	3.100.27.in-addr.arpa
27.100.7.133	A	www.cdnisp.com
27.100.7.134	A	mail.cdnisp.com