Robtex

Up: 123.51.212.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 123.51.212.0/24
Down right: 123.51.213.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
123.51.213.2	A	ns50.tty.com.tw
123.51.213.2	A	gw.tty.com.tw
123.51.213.5	A	dns1.atbpi.com
123.51.213.5	A	dns1.tty.com.tw
123.51.213.5	A	dns1.enhanxbiopharm.com
123.51.213.6	A	dns2.tty.com.tw
123.51.213.12	A	mailserver.tty.com.tw
123.51.213.34	A+PTR	mxserver.ttybiopharm.com
123.51.213.34	PTR	mxserver.atbpi.com
123.51.213.34	A+PTR	mxserver.tty.com.tw
123.51.213.37	A	www.painkyl.com.tw
123.51.213.41	A	www.s-1.com.tw
123.51.213.41	A	www.ts1.com.tw
123.51.213.42	A	lauming.com