Robtex

Up: 103.216.116.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 103.216.116.0/24
Down right: 103.216.117.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
103.216.116.5	PTR	server-5.opendigital.vn
103.216.116.5	A	mail.opendigital14.com
103.216.116.5	A	mail.opendigial13.com
103.216.116.6	PTR	v103.216.116-6.opendigital.vn
103.216.116.6	A	dc-906f20cc-mail.canhotrieudo.net
103.216.116.6	A	mercedesvovankiet.com
103.216.116.7	PTR	v103.216.116-7.opendigital.vn
103.216.116.7	A	tk7.citymail.vn
103.216.116.11	A+PTR	smtp.opendigital.link
103.216.116.12	A+PTR	smtp.baohot.info
103.216.116.12	A	mail.baohot.info
103.216.116.15	PTR	v103.216.116-15.opendigital.vn
103.216.116.15	A	smtp.dichvudoanhnghiephn.com
103.216.116.254	A	smtp254.odvn.vn
103.216.117.23	PTR	mx23.opendigital.top
103.216.117.111	A+PTR	mx111.vuamoigioi.com
103.216.117.112	A+PTR	mx112.vuamoigioi.com