Robtex

Up: 203.204.112.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 203.204.120.0/22
Down right: 203.204.124.0/22

IP	Type	Hostname
203.204.123.107	A	host-203-204-123-107.static.kbtelecom.net
203.204.125.161	A+PTR	host-203-204-125-161.static.kbtelecom.net
203.204.125.163	A	203-204-125-163.adsl.static.giga.net.tw
203.204.125.251	PTR	host-203-204-125-251.static.kbtelecom.net