Robtex

Up: 203.187.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.187.12.0/23
Down right: 203.187.14.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.187.12.55	A+PTR	host-203-187-12-55.ip.kbtelecom.net
203.187.12.61	PTR	host-203-187-12-61.ip.kbtelecom.net
203.187.12.147	PTR	antispam.dmg.tv
203.187.12.236	PTR	host-203-187-12-236.ip.kbtelecom.net
203.187.13.14	A+PTR	host-203-187-13-14.ip.kbtelecom.net
203.187.14.72	A+PTR	host-203-187-14-72.ip.kbtelecom.net
203.187.14.107	A	host-203-187-14-107.ip.kbtelecom.net
203.187.14.112	A	friends.giga.net.tw
203.187.14.114	A	host-203-187-14-114.ip.kbtelecom.net
203.187.14.131	A	member.totalbb.net.tw
203.187.14.132	A+PTR	smtp3.totalbb.net.tw
203.187.14.133	A+PTR	smtp1.totalbb.net.tw
203.187.14.134	A+PTR	smtp2.totalbb.net.tw
203.187.14.134	A	u14-134.u203-187.giga.net.tw
203.187.14.160	A	host-203-187-14-160.ip.kbtelecom.net
203.187.14.170	A	host-203-187-14-170.ip.kbtelecom.net
203.187.14.201	PTR	smtp.totalbb.net.tw
203.187.14.202	A+PTR	pop3.totalbb.net.tw
203.187.14.202	A	totalbb.net.tw
203.187.14.202	A	smtp.totalbb.net.tw
203.187.15.6	A	eric.giga.net.tw
203.187.15.15	A	coco.giga.net.tw
203.187.15.34	A+PTR	host-203-187-15-34.ip.kbtelecom.net
203.187.15.34	A	rfc.giga.net.tw
203.187.15.34	A	ftp.giga.net.tw
203.187.15.37	A	freedial1.giga.net.tw
203.187.15.38	A	freedial2.giga.net.tw
203.187.15.41	A	kovu.giga.net.tw
203.187.15.42	A+PTR	kiara.giga.net.tw
203.187.15.223	PTR	host-203-187-15-223.ip.kbtelecom.net
203.187.15.225	A+PTR	host-203-187-15-225.ip.kbtelecom.net
203.187.15.236	PTR	mail.gigamedia.com.tw
203.187.15.248	PTR	gigamedia.com.tw
203.187.15.249	PTR	gigamedia.com.tw