Registro DMARC
v=DMARC1; p=none;

Registro IPv4
host: Nestorn.com
class: IN
ttl: 300
type: A
ip: 85.121.55.21

Servidores DNS Principal (mname) y Secundario (rname)
host: Nestorn.com
class: IN
ttl: 1800
type: SOA
mname: arturo.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2403909734
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: Nestorn.com
class: IN
ttl: 300
type: MX
pri: 0
target: Nestorn.com

Información TXT
host: Nestorn.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 mx a:nestorn.com ip4:85.121.55.21 ~all
entries: Array