Robtex

Up: 203.70.200.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.70.200.0/23
Down right: 203.70.202.0/23

IP	Type	Hostname
203.70.201.182	A+PTR	203-70-201-182.adsl.dynamic.seed.net.tw
203.70.203.0	A+PTR	203-70-203-0.adsl.dynamic.seed.net.tw
203.70.203.15	PTR	203-70-203-15.adsl.dynamic.seed.net.tw
203.70.203.116	A+PTR	203-70-203-116.adsl.dynamic.seed.net.tw