Robtex

Up: 203.205.24.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.205.28.0/23
Down right: 203.205.30.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.205.28.4	PTR	static.cmcti.vn
203.205.28.14	PTR	static.cmcti.vn
203.205.28.15	PTR	static.cmcti.vn
203.205.28.15	A	naturebachhop.com
203.205.28.15	A	parmanocoffee.com
203.205.28.38	PTR	static.cmcti.vn
203.205.28.38	A	giacat.info
203.205.28.39	PTR	static.cmcti.vn
203.205.28.51	PTR	static.cmcti.vn
203.205.28.105	PTR	static.cmcti.vn
203.205.28.117	PTR	static.cmcti.vn
203.205.28.130	PTR	static.cmcti.vn
203.205.28.131	PTR	static.cmcti.vn
203.205.28.132	PTR	static.cmcti.vn
203.205.28.150	A	choncho.net
203.205.28.150	A	mail.choncho.net
203.205.28.162	A	hieunm.info
203.205.28.174	PTR	static.cmcti.vn
203.205.28.174	A	mx.russinvecchi.com.vn
203.205.28.202	PTR	static.cmcti.vn
203.205.28.202	A	lms.edu.vn
203.205.28.202	A	mail.phongkhammat.net
203.205.28.213	A	noitieng.com
203.205.28.213	A	www.noitieng.com
203.205.28.215	PTR	static.cmcti.vn
203.205.28.215	A	bcci.vn
203.205.28.219	PTR	static.cmcti.vn
203.205.28.229	PTR	static.cmcti.vn
203.205.28.231	A+PTR	mail.haiminh.com.vn
203.205.28.241	PTR	static.cmcti.vn
203.205.28.243	PTR	static.cmcti.vn
203.205.29.19	PTR	static.cmcti.vn
203.205.29.61	PTR	static.cmcti.vn
203.205.29.130	PTR	static.cmcti.vn
203.205.29.142	PTR	static.cmcti.vn
203.205.29.175	PTR	static.cmcti.vn
203.205.29.191	PTR	static.cmcti.vn
203.205.29.212	PTR	static.cmcti.vn
203.205.30.5	A	datnuocviet.com
203.205.30.16	PTR	static.cmcti.vn
203.205.30.16	A	www.vieteam-events.com
203.205.30.16	A	conhantaothethao.com
203.205.30.63	PTR	static.cmcti.vn
203.205.30.63	A	phc-labs.com
203.205.30.63	A	xdefense.net
203.205.30.144	PTR	static.cmcti.vn
203.205.30.149	PTR	static.cmcti.vn
203.205.31.162	PTR	static.cmcti.vn
203.205.31.193	PTR	static.cmcti.vn
203.205.31.197	A	www.hotec.edu.vn
203.205.31.197	A	ktkthcm.edu.vn
203.205.31.197	A	hotec.edu.vn