Robtex

Up: 117.2.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 117.2.80.0/23
Down right: 117.2.82.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
117.2.80.1	PTR	localhost
117.2.80.8	PTR	localhost
117.2.80.20	PTR	localhost
117.2.80.23	PTR	localhost
117.2.80.25	PTR	localhost
117.2.80.26	PTR	localhost
117.2.80.29	PTR	localhost
117.2.80.31	PTR	localhost
117.2.80.41	PTR	localhost
117.2.80.42	PTR	localhost
117.2.80.46	PTR	localhost
117.2.80.51	PTR	localhost
117.2.80.54	PTR	localhost
117.2.80.64	PTR	localhost
117.2.80.81	PTR	localhost
117.2.80.84	PTR	localhost
117.2.80.86	PTR	localhost
117.2.80.90	PTR	localhost
117.2.80.93	PTR	localhost
117.2.80.94	PTR	localhost
117.2.80.96	PTR	localhost
117.2.80.101	PTR	localhost
117.2.80.104	PTR	localhost
117.2.80.107	PTR	localhost
117.2.80.112	PTR	localhost
117.2.80.114	PTR	localhost
117.2.80.118	PTR	localhost
117.2.80.120	PTR	localhost
117.2.80.126	PTR	localhost
117.2.80.132	PTR	localhost
117.2.80.137	PTR	localhost
117.2.80.139	PTR	localhost
117.2.80.143	PTR	localhost
117.2.80.148	PTR	localhost
117.2.80.149	PTR	localhost
117.2.80.156	PTR	localhost
117.2.80.158	PTR	localhost
117.2.80.169	PTR	localhost
117.2.80.172	PTR	localhost
117.2.80.173	PTR	localhost
117.2.80.174	PTR	localhost
117.2.80.177	PTR	localhost
117.2.80.178	PTR	localhost
117.2.80.181	PTR	localhost
117.2.80.182	PTR	localhost
117.2.80.183	PTR	localhost
117.2.80.186	PTR	localhost
117.2.80.195	PTR	localhost
117.2.80.199	PTR	localhost
117.2.80.205	PTR	localhost
117.2.80.206	PTR	localhost
117.2.80.213	PTR	localhost
117.2.80.222	PTR	localhost
117.2.80.226	PTR	localhost
117.2.80.230	PTR	localhost
117.2.80.233	PTR	localhost
117.2.80.242	PTR	localhost
117.2.80.249	PTR	localhost
117.2.80.252	PTR	localhost
117.2.81.195	PTR	localhost
117.2.82.6	PTR	localhost
117.2.82.28	PTR	localhost
117.2.82.53	PTR	localhost
117.2.82.56	PTR	localhost
117.2.82.68	A	www.htbio.com.vn
117.2.82.68	A	truongchinhtrilamdong.com.vn
117.2.82.68	A	langbiang.gov.vn
117.2.82.70	PTR	localhost
117.2.82.72	PTR	localhost
117.2.82.85	PTR	localhost
117.2.82.127	PTR	localhost
117.2.82.129	PTR	localhost
117.2.82.133	PTR	localhost
117.2.82.139	PTR	localhost
117.2.82.143	PTR	localhost
117.2.82.178	PTR	localhost
117.2.82.179	PTR	localhost
117.2.82.183	PTR	localhost
117.2.82.208	PTR	localhost
117.2.82.223	PTR	localhost
117.2.82.232	PTR	localhost
117.2.82.237	PTR	localhost
117.2.82.254	PTR	localhost