Robtex

Up: 123.204.240.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 123.204.248.0/22
Down right: 123.204.252.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
123.204.249.33	A	123-204-249-33.adsl.dynamic.seed.net.tw
123.204.249.58	A	123-204-249-58.adsl.dynamic.seed.net.tw
123.204.249.87	A	123-204-249-87.adsl.dynamic.seed.net.tw
123.204.249.135	PTR	123-204-249-135.adsl.dynamic.seed.net.tw
123.204.249.138	A+PTR	123-204-249-138.adsl.dynamic.seed.net.tw
123.204.249.229	PTR	123-204-249-229.adsl.dynamic.seed.net.tw
123.204.250.17	A	dns11.hoolan.org
123.204.250.17	A	dns12.hoolan.org
123.204.250.111	A	mail.pvzone.com
123.204.250.118	A	digiland.tw
123.204.250.118	A	www.digiland.tw
123.204.250.118	A	mail.digiland.tw
123.204.250.130	A	handy.idv.tw
123.204.250.247	A	introdme.com
123.204.251.94	PTR	123-204-251-94.static.seed.net.tw
123.204.251.105	A	bonkids.com
123.204.251.109	PTR	123-204-251-109.static.seed.net.tw
123.204.251.109	A	server.jans.com.tw
123.204.251.109	A	www.joing.com.tw
123.204.251.130	PTR	123-204-251-130.static.seed.net.tw
123.204.251.144	A	www.2twn.com
123.204.251.193	PTR	123-204-251-193.static.seed.net.tw
123.204.251.193	A	hueinerng.com
123.204.252.43	PTR	123-204-252-43.static.seed.net.tw
123.204.252.43	A	dns.skycity.com.tw
123.204.252.43	A	dns1.sky-city.com.tw
123.204.252.62	A	mail.moncila.org
123.204.252.62	A	master.idv.tw
123.204.252.62	A	dns2.kmdog.com.tw
123.204.252.72	A	tinglecapital.com
123.204.252.79	A	asoldcosmetics.com.tw
123.204.252.122	PTR	123-204-252-122.static.seed.net.tw
123.204.252.136	A	www.eeoo.idv.tw
123.204.252.150	A	ns1.doudousports.com
123.204.252.150	A	doudousynergy.com
123.204.252.169	PTR	123-204-252-169.static.seed.net.tw
123.204.252.169	A	pikajob.com
123.204.252.173	A	ipglory.com
123.204.255.1	PTR	123-204-255-1.static.seed.net.tw
123.204.255.3	PTR	123-204-255-3.static.seed.net.tw
123.204.255.17	PTR	123-204-255-17.static.seed.net.tw
123.204.255.18	PTR	123-204-255-18.static.seed.net.tw
123.204.255.24	PTR	123-204-255-24.static.seed.net.tw
123.204.255.33	PTR	123-204-255-33.static.seed.net.tw
123.204.255.41	PTR	123-204-255-41.static.seed.net.tw
123.204.255.42	PTR	123-204-255-42.static.seed.net.tw
123.204.255.58	PTR	123-204-255-58.static.seed.net.tw
123.204.255.74	PTR	123-204-255-74.static.seed.net.tw
123.204.255.82	PTR	123-204-255-82.static.seed.net.tw
123.204.255.104	PTR	123-204-255-104.static.seed.net.tw
123.204.255.105	PTR	123-204-255-105.static.seed.net.tw
123.204.255.113	PTR	123-204-255-113.static.seed.net.tw
123.204.255.114	PTR	123-204-255-114.static.seed.net.tw
123.204.255.136	PTR	123-204-255-136.static.seed.net.tw
123.204.255.137	PTR	123-204-255-137.static.seed.net.tw
123.204.255.145	PTR	123-204-255-145.static.seed.net.tw
123.204.255.152	PTR	123-204-255-152.static.seed.net.tw
123.204.255.155	PTR	123-204-255-155.static.seed.net.tw
123.204.255.160	PTR	123-204-255-160.static.seed.net.tw
123.204.255.161	PTR	123-204-255-161.static.seed.net.tw
123.204.255.162	PTR	123-204-255-162.static.seed.net.tw
123.204.255.163	PTR	123-204-255-163.static.seed.net.tw
123.204.255.168	PTR	123-204-255-168.static.seed.net.tw
123.204.255.178	PTR	123-204-255-178.static.seed.net.tw
123.204.255.185	PTR	123-204-255-185.static.seed.net.tw
123.204.255.186	PTR	123-204-255-186.static.seed.net.tw
123.204.255.187	PTR	123-204-255-187.static.seed.net.tw
123.204.255.200	PTR	123-204-255-200.static.seed.net.tw
123.204.255.201	PTR	123-204-255-201.static.seed.net.tw
123.204.255.210	PTR	123-204-255-210.static.seed.net.tw
123.204.255.217	PTR	123-204-255-217.static.seed.net.tw
123.204.255.232	PTR	123-204-255-232.static.seed.net.tw
123.204.255.234	PTR	123-204-255-234.static.seed.net.tw
123.204.255.235	PTR	123-204-255-235.static.seed.net.tw
123.204.255.241	PTR	123-204-255-241.static.seed.net.tw
123.204.255.242	PTR	123-204-255-242.static.seed.net.tw
123.204.255.243	PTR	123-204-255-243.static.seed.net.tw
123.204.255.248	PTR	123-204-255-248.static.seed.net.tw
123.204.255.251	PTR	123-204-255-251.static.seed.net.tw