Registro DMARC
v=DMARC1; p=none; aspf=r; adkim=r

Registro IPv4
host: first-i.co.jp
class: IN
ttl: 3600
type: A
ip: 133.167.8.164

Servidores DNS Principal (mname) y Secundario (rname)
host: first-i.co.jp
class: IN
ttl: 3600
type: SOA
mname: master.dns.ne.jp
rname: tech.sakura.ad.jp
serial: 2024120414
refresh: 3600
retry: 900
expire: 3600000
minimum-ttl: 3600

Servidor de Correo
host: first-i.co.jp
class: IN
ttl: 3600
type: MX
pri: 10
target: mail.first-i.co.jp

Información TXT
host: first-i.co.jp
class: IN
ttl: 3600
type: TXT
txt: v=spf1 a:www2800.sakura.ne.jp mx ~all
entries: Array