Robtex

Up: 203.203.0.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 203.203.0.0/24
Down right: 203.203.1.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.203.0.0	PTR	host-203-203-0-0.dynamic.kbtelecom.net
203.203.0.2	A	host-203-203-0-2.dynamic.kbtelecom.net
203.203.0.100	A+PTR	host-203-203-0-100.dynamic.kbtelecom.net
203.203.0.100	A	dns2.yup.tw
203.203.0.100	A	dns2.inoac.com.tw
203.203.0.125	A+PTR	host-203-203-0-125.dynamic.kbtelecom.net
203.203.0.125	A	dns2.sdtv.net.tw
203.203.1.45	PTR	host-203-203-1-45.dynamic.kbtelecom.net
203.203.1.81	A+PTR	host-203-203-1-81.dynamic.kbtelecom.net
203.203.1.122	A+PTR	host-203-203-1-122.dynamic.kbtelecom.net
203.203.1.211	PTR	host-203-203-1-211.dynamic.kbtelecom.net