Registro DMARC
v=DMARC1;p=none;pct=100;rua=mailto:postmaster@tnu.vn

Registro IPv4
host: tnu.vn
class: IN
ttl: 3600
type: A
ip: 203.113.135.199

Servidores DNS Principal (mname) y Secundario (rname)
host: tnu.vn
class: IN
ttl: 3600
type: SOA
mname: ns1.zonedns.vn
rname: root.tnu.vn
serial: 2025012305
refresh: 1200
retry: 600
expire: 1209600
minimum-ttl: 3600

Servidor de Correo
host: tnu.vn
class: IN
ttl: 300
type: MX
pri: 10
target: mail.tnu.vn

Información TXT
host: tnu.vn
class: IN
ttl: 300
type: TXT
txt: v=spf1 mx ip4:45.117.81.234 include:spf.nhanhoa.com -all
entries: Array