Registro DMARC
v=DMARC1; p=none; sp=none

Registro IPv4
host: holder.io
class: IN
ttl: 90
type: A
ip: 188.124.54.149

Servidores DNS Principal (mname) y Secundario (rname)
host: holder.io
class: IN
ttl: 900
type: SOA
mname: dns1.yandex.net
rname: dns-hosting.yandex.ru
serial: 36
refresh: 900
retry: 90
expire: 86400
minimum-ttl: 900

Servidor de Correo
host: holder.io
class: IN
ttl: 3333
type: MX
pri: 10
target: mx.yandex.net

Información TXT
host: holder.io
class: IN
ttl: 3333
type: TXT
txt: v=spf1 ip4:49.12.78.196 ip188.124.54.149 ip4:195.201.239.10 include:_spf.yandex.net ~all
entries: Array