Robtex

Up: 103.216.116.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 103.216.118.0/24
Down right: 103.216.119.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
103.216.119.2	A+PTR	smtp.emailmobifone.com
103.216.119.117	PTR	v103.216.119-117.opendigital.vn
103.216.119.117	A	huyentran.net
103.216.119.117	A	mail.huyentran.net
103.216.119.118	PTR	v103.216.119-118.opendigital.vn
103.216.119.118	A	mail.doanhnhanhn.com
103.216.119.118	A	mail.emailctgroup.com
103.216.119.119	PTR	v103.216.119-119.opendigital.vn
103.216.119.119	A	mail.odvn.vn
103.216.119.128	A	mailecogreen.tw