Robtex

Up: 61.63.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 61.63.84.0/23
Down right: 61.63.86.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
61.63.84.2	PTR	edm2.ctinews.com
61.63.84.3	PTR	edm3.ctinews.com
61.63.84.4	PTR	edm5.ctinews.com
61.63.84.11	PTR	cla-e2k3-fe.chinatimes.com
61.63.84.11	PTR	it.chinatimes.com
61.63.84.11	PTR	pop3.chinatimes.com
61.63.84.12	PTR	edm12.chinatimes.com
61.63.85.227	A+PTR	61-63-85-host227.kbtelecom.net.tw
61.63.85.227	A	dns3.insrea.com.tw
61.63.85.234	PTR	61-63-85-host234.kbtelecom.net.tw
61.63.85.234	A	5fcap.com
61.63.86.12	A+PTR	61-63-86-host12.kbtelecom.net.tw
61.63.86.13	A+PTR	61-63-86-host13.kbtelecom.net.tw
61.63.86.36	PTR	61-63-86-host36.kbtelecom.net.tw
61.63.86.100	A+PTR	61-63-86-host100.kbtelecom.net.tw
61.63.86.193	A+PTR	61-63-86-host193.kbtelecom.net.tw
61.63.86.224	A+PTR	61-63-86-host224.kbtelecom.net.tw
61.63.87.5	PTR	tw.panasonic.com
61.63.87.5	PTR	mail.panasonic.com.tw
61.63.87.5	PTR	outmail.panasonic.com.tw
61.63.87.11	A+PTR	61-63-87-host11.kbtelecom.net.tw
61.63.87.13	A+PTR	61-63-87-host13.kbtelecom.net.tw
61.63.87.15	A+PTR	61-63-87-host15.kbtelecom.net.tw
61.63.87.21	A+PTR	61-63-87-host21.kbtelecom.net.tw
61.63.87.29	A+PTR	61-63-87-host29.kbtelecom.net.tw
61.63.87.46	A+PTR	61-63-87-host46.kbtelecom.net.tw
61.63.87.54	A+PTR	61-63-87-host54.kbtelecom.net.tw
61.63.87.57	A+PTR	61-63-87-host57.kbtelecom.net.tw
61.63.87.69	A+PTR	61-63-87-host69.kbtelecom.net.tw
61.63.87.89	A+PTR	61-63-87-host89.kbtelecom.net.tw
61.63.87.138	A+PTR	61-63-87-host138.kbtelecom.net.tw
61.63.87.250	A+PTR	61-63-87-host250.kbtelecom.net.tw