Robtex

Up: 117.4.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 117.4.80.0/21
Down right: 117.4.88.0/21

IP	Type	Hostname
117.4.80.51	PTR	localhost
117.4.80.131	PTR	localhost
117.4.80.145	PTR	localhost
117.4.80.192	PTR	localhost
117.4.80.210	PTR	localhost
117.4.81.35	PTR	localhost
117.4.81.242	PTR	localhost
117.4.82.18	PTR	localhost
117.4.82.82	PTR	localhost
117.4.82.224	PTR	localhost
117.4.83.32	PTR	localhost
117.4.83.80	PTR	localhost
117.4.83.128	PTR	localhost
117.4.83.195	PTR	localhost
117.4.83.208	PTR	localhost
117.4.84.240	A	lms.tnu.edu.vn
117.4.88.64	PTR	localhost
117.4.88.97	PTR	localhost
117.4.88.112	PTR	localhost
117.4.88.114	PTR	localhost
117.4.88.129	PTR	localhost
117.4.88.193	PTR	localhost
117.4.89.1	PTR	localhost
117.4.89.65	PTR	localhost
117.4.89.80	PTR	localhost
117.4.89.115	PTR	localhost
117.4.89.162	PTR	localhost
117.4.89.163	PTR	localhost
117.4.91.19	PTR	localhost
117.4.91.128	PTR	localhost
117.4.91.130	PTR	localhost
117.4.92.17	PTR	localhost
117.4.92.75	A	www.als.edu.vn
117.4.92.75	A	*.als.edu.vn
117.4.92.75	A	als.edu.vn
117.4.92.101	A	www.citad.vn
117.4.92.112	PTR	localhost
117.4.93.2	PTR	localhost
117.4.93.162	PTR	localhost
117.4.93.163	PTR	localhost
117.4.93.176	PTR	localhost
117.4.93.192	PTR	localhost
117.4.93.193	PTR	localhost
117.4.94.16	PTR	localhost
117.4.94.17	PTR	localhost
117.4.94.83	PTR	localhost
117.4.94.211	PTR	localhost
117.4.95.1	PTR	localhost
117.4.95.17	PTR	localhost
117.4.95.33	PTR	localhost
117.4.95.83	PTR	localhost
117.4.95.195	PTR	localhost
117.4.95.243	PTR	localhost