Registro DMARC
v=DMARC1; p=none; rua=mailto:dmarc@b2n.ir

Registro IPv4
host: b2n.ir
class: IN
ttl: 300
type: A
ip: 104.21.93.182

Servidores DNS Principal (mname) y Secundario (rname)
host: b2n.ir
class: IN
ttl: 1800
type: SOA
mname: fay.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2406265717
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: b2n.ir
class: IN
ttl: 300
type: MX
pri: 10
target: mx.yandex.net

Información TXT
host: b2n.ir
class: IN
ttl: 300
type: TXT
txt: v=spf1 include:_spf.yandex.net ~all
entries: Array