Robtex

Up: 123.240.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 123.240.32.0/20
Down right: 123.240.48.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
123.240.34.2	PTR	123-240-34-2.cctv.dynamic.tbcnet.net.tw
123.240.35.96	PTR	123-240-35-96.cctv.dynamic.tbcnet.net.tw
123.240.35.96	A	ns2.hot123.com.tw
123.240.35.96	A	ns2.kinge.com.tw
123.240.36.98	PTR	123-240-36-98.cctv.dynamic.tbcnet.net.tw
123.240.36.98	A	kingsuede.info
123.240.36.128	PTR	123-240-36-128.cctv.dynamic.tbcnet.net.tw
123.240.37.33	PTR	123-240-37-33.cctv.dynamic.tbcnet.net.tw
123.240.38.160	PTR	123-240-38-160.cctv.dy.tbcnet.net.tw
123.240.39.1	PTR	123-240-39-1.cctv.dynamic.tbcnet.net.tw
123.240.39.2	PTR	123-240-39-2.cctv.dynamic.tbcnet.net.tw
123.240.39.162	PTR	123-240-39-162.cctv.dynamic.tbcnet.net.tw
123.240.39.193	PTR	123-240-39-193.cctv.dynamic.tbcnet.net.tw
123.240.40.192	PTR	123-240-40-192.cctv.dynamic.tbcnet.net.tw
123.240.40.206	A	anatolia.ddns.net
123.240.45.97	PTR	123-240-45-97.cctv.dy.tbcnet.net.tw
123.240.47.1	PTR	123-240-47-1.cctv.dynamic.tbcnet.net.tw
123.240.47.72	A	as-tudio.com
123.240.48.97	PTR	123-240-48-97.cctv.dy.tbcnet.net.tw
123.240.48.160	PTR	123-240-48-160.cctv.dy.tbcnet.net.tw
123.240.49.225	PTR	123-240-49-225.cctv.dynamic.tbcnet.net.tw
123.240.51.224	PTR	123-240-51-224.cctv.dynamic.tbcnet.net.tw
123.240.53.19	A	mail.cottonpk.com
123.240.53.19	A	www.cottonpk.com
123.240.53.226	PTR	123-240-53-226.cctv.dynamic.tbcnet.net.tw
123.240.58.243	A	paco3838.com
123.240.59.224	PTR	123-240-59-224.cctv.dynamic.tbcnet.net.tw
123.240.61.99	A	wen-long.tk
123.240.63.225	PTR	123-240-63-225.cctv.dynamic.tbcnet.net.tw