Servidores DNS Principal (mname) y Secundario (rname)
host: tty.nu
class: IN
ttl: 1800
type: SOA
mname: ns01.0x4f.eu
rname: hostmaster.0x4f.eu
serial: 2025050101
refresh: 14400
retry: 3600
expire: 604800
minimum-ttl: 28800

Servidor de Correo
host: tty.nu
class: IN
ttl: 60
type: MX
pri: 100
target: mx02.0x4f.eu

Servidor de Correo
host: tty.nu
class: IN
ttl: 60
type: MX
pri: 200
target: mx01.0x4f.eu

Información TXT
host: tty.nu
class: IN
ttl: 3600
type: TXT
txt: v=spf1 a mx include:spf.0x4f.eu -all
entries: Array