Robtex

Up: 202.137.192.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 202.137.192.0/23
Down right: 202.137.194.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
202.137.192.3	PTR	e-span.com.au
202.137.192.3	PTR	mx2.e-span.com.au
202.137.192.3	PTR	nameserver1.e-span.com.au
202.137.192.9	PTR	nameserver2.e-span.com.au
202.137.192.9	PTR	ns2.e-span.com.au
202.137.193.13	PTR	gcs-client-193-13.spr.e-span.com.au
202.137.193.14	PTR	gcs-client-193-14.spr.e-span.com.au
202.137.193.19	PTR	cci-client-193-19.spr.e-span.com.au
202.137.193.23	PTR	cci-client-193-23.spr.e-span.com.au
202.137.193.25	PTR	cci-client-193-25.spr.e-span.com.au
202.137.193.38	PTR	fleetcare-client-193-38.spr.e-span.com.au
202.137.193.44	PTR	ngis-client-193-44.spr.e-span.com.au
202.137.193.59	PTR	csa-client-193-59.spr.e-span.com.au
202.137.193.65	A+PTR	remotebackup.rnas.com.au
202.137.193.65	A	ns2.adityabirla.com.au
202.137.193.67	PTR	markovic.com.au
202.137.193.67	PTR	rnas.com.au
202.137.193.67	PTR	mail.needsbeer.com
202.137.193.71	A+PTR	r-box.com.au
202.137.193.71	A+PTR	elev8.r-box.com.au
202.137.193.152	PTR	mike-ap.spr.e-span.com.au
202.137.193.204	PTR	webcat.ngis.com.au