Robtex

Up: 210.66.0.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 210.66.0.0/23
Down right: 210.66.2.0/23

IP	Type	Hostname
210.66.1.2	A	210-66-1-2.adsl.dynamic.seed.net.tw
210.66.1.73	A+PTR	210-66-1-73.adsl.dynamic.seed.net.tw
210.66.1.221	A+PTR	210-66-1-221.adsl.dynamic.seed.net.tw
210.66.2.1	A+PTR	sw66-2-1.adsl.seed.net.tw
210.66.2.2	A+PTR	sw66-2-2.adsl.seed.net.tw