Robtex

Up: 14.224.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 14.224.0.0/22
Down right: 14.224.4.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
14.224.0.0	PTR	static.vnpt.vn
14.224.0.2	PTR	ex-edge02.vnpt.vn
14.224.0.2	A	congdoanhungyen.vn
14.224.0.2	A	izhanam.gov.vn
14.224.0.6	PTR	gw01.vnpt.vn
14.224.0.7	PTR	static.vnpt.vn
14.224.0.8	PTR	static.vnpt.vn
14.224.0.9	PTR	static.vnpt.vn
14.224.0.10	PTR	static.vnpt.vn
14.224.0.132	A+PTR	mail.vnpt.vn
14.224.0.132	A	smtp.vnpt.vn
14.224.0.132	A	mail.vnpt.com.vn
14.224.0.133	PTR	gw02.vnpt.vn
14.224.0.134	PTR	gw12.vnpt.vn