Robtex

Up: 117.0.144.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 117.0.152.0/22
Down right: 117.0.156.0/22

IP	Type	Hostname
117.0.152.98	PTR	localhost
117.0.156.1	PTR	localhost
117.0.156.10	PTR	localhost
117.0.156.34	PTR	localhost
117.0.156.43	PTR	localhost
117.0.156.48	PTR	localhost
117.0.156.56	PTR	localhost
117.0.156.64	PTR	localhost
117.0.156.74	PTR	localhost
117.0.156.91	PTR	localhost
117.0.156.107	PTR	localhost
117.0.156.112	PTR	localhost
117.0.156.113	PTR	localhost
117.0.156.115	PTR	localhost
117.0.156.120	PTR	localhost
117.0.156.130	PTR	localhost
117.0.156.131	PTR	localhost
117.0.156.139	PTR	localhost
117.0.156.145	PTR	localhost
117.0.156.146	PTR	localhost
117.0.156.184	PTR	localhost
117.0.156.185	PTR	localhost
117.0.156.195	PTR	localhost
117.0.156.200	PTR	localhost
117.0.156.202	PTR	localhost
117.0.156.208	PTR	localhost
117.0.156.216	PTR	localhost
117.0.156.217	PTR	localhost
117.0.156.232	PTR	localhost
117.0.158.128	PTR	localhost