Robtex

Up: 203.80.160.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.80.160.0/25
Down right: 203.80.160.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.80.160.5	PTR	mail.busivid.com
203.80.160.5	A	mail.buzzcard.com
203.80.160.5	A	mail.4842.net.au
203.80.160.6	A	soundsreal.com
203.80.160.7	A	soundsreal.com.au
203.80.160.8	A+PTR	soundsreal.co.nz
203.80.160.9	A+PTR	buzzcard.com
203.80.160.9	A	buzzcards.com.au