Robtex

Up: 203.205.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.205.8.0/23
Down right: 203.205.10.0/23

IP	Type	Hostname
203.205.8.18	PTR	static.cmcti.vn
203.205.9.69	PTR	static.cmcti.vn
203.205.10.239	PTR	static.cmcti.vn
203.205.10.240	PTR	static.cmcti.vn
203.205.11.160	PTR	static.cmcti.vn
203.205.11.195	PTR	static.cmcti.vn