Registro DMARC
v=DMARC1; p=none;

Registro IPv4
host: hvnh.edu.vn.wcdnga.com
class: IN
ttl: 90
type: A
ip: 163.171.135.104

Registro CNAME (Alias)
host: hvnh.edu.vn
class: IN
ttl: 3600
type: CNAME
target: hvnh.edu.vn.wcdnga.com

Registro CNAME (Alias)
host: hvnh.edu.vn
class: IN
ttl: 3599
type: CNAME
target: hvnh.edu.vn.wcdnga.com