Robtex

Up: 192.72.240.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 192.72.240.0/22
Down right: 192.72.244.0/22

IP	Type	Hostname
192.72.241.0	PTR	h0-192-72-241.seed.net.tw
192.72.241.10	PTR	h10-192-72-241.seed.net.tw
192.72.241.24	PTR	h24-192-72-241.seed.net.tw
192.72.241.32	PTR	h32-192-72-241.seed.net.tw
192.72.241.40	PTR	h40-192-72-241.seed.net.tw
192.72.241.49	PTR	h49-192-72-241.seed.net.tw
192.72.241.56	PTR	h56-192-72-241.seed.net.tw
192.72.241.58	PTR	h58-192-72-241.seed.net.tw
192.72.241.64	PTR	h64-192-72-241.seed.net.tw
192.72.241.72	PTR	h72-192-72-241.seed.net.tw
192.72.241.73	PTR	h73-192-72-241.seed.net.tw
192.72.241.91	PTR	h91-192-72-241.seed.net.tw
192.72.241.96	PTR	h96-192-72-241.seed.net.tw
192.72.241.99	PTR	h99-192-72-241.seed.net.tw
192.72.241.105	PTR	h105-192-72-241.seed.net.tw
192.72.241.112	PTR	h112-192-72-241.seed.net.tw
192.72.241.114	PTR	h114-192-72-241.seed.net.tw
192.72.241.130	PTR	h130-192-72-241.seed.net.tw
192.72.241.136	PTR	h136-192-72-241.seed.net.tw
192.72.241.139	PTR	h139-192-72-241.seed.net.tw
192.72.241.147	PTR	h147-192-72-241.seed.net.tw
192.72.241.153	PTR	h153-192-72-241.seed.net.tw
192.72.241.154	PTR	h154-192-72-241.seed.net.tw
192.72.241.169	PTR	h169-192-72-241.seed.net.tw
192.72.241.170	PTR	h170-192-72-241.seed.net.tw
192.72.241.176	PTR	h176-192-72-241.seed.net.tw
192.72.241.192	PTR	h192-192-72-241.seed.net.tw
192.72.241.208	PTR	h208-192-72-241.seed.net.tw
192.72.241.216	PTR	h216-192-72-241.seed.net.tw
192.72.241.217	PTR	h217-192-72-241.seed.net.tw
192.72.241.233	PTR	h233-192-72-241.seed.net.tw
192.72.241.234	PTR	h234-192-72-241.seed.net.tw
192.72.241.235	PTR	h235-192-72-241.seed.net.tw
192.72.241.242	PTR	h242-192-72-241.seed.net.tw
192.72.241.243	PTR	h243-192-72-241.seed.net.tw
192.72.241.248	PTR	h248-192-72-241.seed.net.tw
192.72.241.250	PTR	h250-192-72-241.seed.net.tw