Robtex

Up: 221.169.160.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 221.169.168.0/22
Down right: 221.169.172.0/22

IP	Type	Hostname
221.169.168.2	PTR	sw169-168-2.static.seed.net.tw
221.169.168.3	PTR	sw169-168-3.static.seed.net.tw
221.169.168.8	PTR	sw169-168-8.static.seed.net.tw
221.169.168.11	PTR	sw169-168-11.static.seed.net.tw
221.169.168.24	PTR	sw169-168-24.static.seed.net.tw
221.169.168.40	PTR	sw169-168-40.static.seed.net.tw
221.169.168.43	PTR	sw169-168-43.static.seed.net.tw
221.169.168.51	PTR	sw169-168-51.static.seed.net.tw
221.169.168.57	PTR	sw169-168-57.static.seed.net.tw
221.169.168.59	PTR	sw169-168-59.static.seed.net.tw
221.169.168.65	PTR	sw169-168-65.static.seed.net.tw
221.169.168.66	PTR	sw169-168-66.static.seed.net.tw
221.169.168.67	PTR	sw169-168-67.static.seed.net.tw
221.169.168.72	PTR	sw169-168-72.static.seed.net.tw
221.169.168.104	PTR	sw169-168-104.static.seed.net.tw
221.169.168.129	PTR	sw169-168-129.static.seed.net.tw
221.169.168.130	PTR	sw169-168-130.static.seed.net.tw
221.169.168.136	PTR	sw169-168-136.static.seed.net.tw
221.169.168.137	PTR	sw169-168-137.static.seed.net.tw
221.169.168.144	PTR	sw169-168-144.static.seed.net.tw
221.169.168.153	PTR	sw169-168-153.static.seed.net.tw
221.169.168.154	PTR	sw169-168-154.static.seed.net.tw
221.169.168.155	PTR	sw169-168-155.static.seed.net.tw
221.169.168.170	PTR	sw169-168-170.static.seed.net.tw
221.169.168.171	PTR	sw169-168-171.static.seed.net.tw
221.169.168.202	PTR	sw169-168-202.static.seed.net.tw
221.169.168.218	PTR	sw169-168-218.static.seed.net.tw
221.169.168.219	PTR	sw169-168-219.static.seed.net.tw
221.169.168.232	PTR	sw169-168-232.static.seed.net.tw
221.169.168.233	PTR	sw169-168-233.static.seed.net.tw
221.169.168.242	PTR	sw169-168-242.static.seed.net.tw
221.169.168.249	PTR	sw169-168-249.static.seed.net.tw
221.169.169.140	A	dns.fun4u.tw
221.169.169.149	PTR	sw169-169-149.static.seed.net.tw
221.169.175.81	PTR	sw169-175-81.static.seed.net.tw