Robtex

Up: 203.16.242.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.16.243.0/25
Down right: 203.16.243.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.16.243.48	A	blastswimmers.com
203.16.243.55	PTR	mail.stachost.net
203.16.243.55	A	mail.sydneyharbourchallenge.com
203.16.243.55	A	mail.blanchfield.com.au
203.16.243.251	PTR	hosti.stachost.net
203.16.243.251	A+PTR	hosti1.stachost.net
203.16.243.251	A	hosti1.stachost.com
203.16.243.252	PTR	host2.stachost.net
203.16.243.252	A+PTR	hosti2.stachost.net
203.16.243.252	A	hosti2.stachost.org