Robtex

Up: 203.118.56.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.118.56.0/25
Down right: 203.118.56.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.118.56.118	A	smtp2.jetstarasia.com
203.118.56.122	PTR	jetstarasia.com
203.118.56.123	PTR	jetstarasia.com
203.118.56.123	A+PTR	smtp123.jetstarasia.com
203.118.56.149	A	mx3.e-dchl.com
203.118.56.149	A	mx3.edouardpinaud.com
203.118.56.149	A	mx3.dchl.com.sg
203.118.56.177	PTR	mail.asiantour.com
203.118.56.177	A	mail.myshopglobal.com