Robtex

Up: 117.4.240.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 117.4.240.0/23
Down right: 117.4.242.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
117.4.240.22	PTR	bip.com.vn
117.4.240.49	A	pvps.vn
117.4.240.104	A	aitcvn.com
117.4.240.130	PTR	localhost
117.4.240.140	A	vcc.vnisg.com
117.4.240.140	A	mail.pinexco.com
117.4.240.140	A	vnisg.com
117.4.240.186	PTR	pa.host999.net
117.4.240.186	A	mail.raovat.info
117.4.240.186	A	*.vieclam.info
117.4.240.198	PTR	localhost
117.4.240.214	PTR	localhost
117.4.240.239	PTR	localhost
117.4.241.3	PTR	localhost
117.4.241.17	PTR	localhost
117.4.241.17	A	mail.hdtex.group
117.4.241.17	A	mail.canifa.com
117.4.241.20	A	trangtraithudo.com
117.4.241.20	A	hostmaster.sieubanle.com
117.4.241.20	A	www.tinhoc24h.com
117.4.241.34	PTR	localhost
117.4.241.61	PTR	localhost
117.4.241.61	A	mail.ifcvietnam.com.vn
117.4.241.81	PTR	localhost
117.4.241.129	PTR	localhost
117.4.241.131	PTR	localhost
117.4.241.135	PTR	localhost
117.4.241.135	A	uchi.vn
117.4.241.135	A	www.adfilex.vn
117.4.241.160	PTR	localhost
117.4.241.187	PTR	localhost
117.4.241.212	PTR	localhost
117.4.242.11	PTR	localhost
117.4.242.46	A	mail.hvcgroup.net
117.4.242.48	PTR	localhost
117.4.242.84	PTR	localhost
117.4.242.84	A	kiddywatch.vn
117.4.242.84	A	mail.tiokids.com
117.4.242.94	PTR	localhost
117.4.242.100	PTR	localhost
117.4.242.100	A	thoitrangnam.tk
117.4.242.100	A	www.tamviet.org
117.4.242.126	PTR	localhost
117.4.242.141	PTR	localhost
117.4.242.146	PTR	localhost
117.4.242.149	PTR	localhost
117.4.242.159	A	htbcvt.com
117.4.242.166	PTR	localhost
117.4.242.169	PTR	localhost
117.4.242.181	PTR	localhost
117.4.242.194	PTR	localhost
117.4.242.204	PTR	localhost
117.4.242.204	A	tn.joomexp.com
117.4.242.204	A	dev.joomexp.com
117.4.242.206	PTR	localhost
117.4.243.7	PTR	localhost
117.4.243.13	PTR	localhost
117.4.243.21	PTR	localhost
117.4.243.36	PTR	localhost
117.4.243.47	PTR	localhost
117.4.243.58	PTR	localhost
117.4.243.88	PTR	localhost
117.4.243.91	PTR	localhost
117.4.243.98	PTR	localhost
117.4.243.103	PTR	localhost
117.4.243.106	PTR	localhost
117.4.243.107	PTR	localhost
117.4.243.118	PTR	localhost
117.4.243.121	PTR	localhost
117.4.243.122	PTR	localhost
117.4.243.131	PTR	localhost
117.4.243.136	PTR	localhost
117.4.243.150	PTR	localhost
117.4.243.158	PTR	localhost
117.4.243.175	PTR	localhost
117.4.243.181	PTR	localhost
117.4.243.183	PTR	localhost
117.4.243.189	PTR	localhost
117.4.243.202	PTR	localhost
117.4.243.212	PTR	localhost
117.4.243.231	PTR	localhost
117.4.243.232	PTR	localhost
117.4.243.241	PTR	localhost
117.4.243.248	PTR	localhost