Registro IPv4
host: ad-telecom.nl
class: IN
ttl: 100
type: A
ip: 185.37.71.50

Servidores DNS Principal (mname) y Secundario (rname)
host: ad-telecom.nl
class: IN
ttl: 100
type: SOA
mname: ns3.firstfind.nl
rname: hostmaster\@firstfind.nl
serial: 2020070701
refresh: 16384
retry: 2048
expire: 1048576
minimum-ttl: 14400

Servidor de Correo
host: ad-telecom.nl
class: IN
ttl: 100
type: MX
pri: 10
target: primary.yourfilter.nl

Servidor de Correo
host: ad-telecom.nl
class: IN
ttl: 100
type: MX
pri: 20
target: fallback.yourfilter.nl

Información TXT
host: ad-telecom.nl
class: IN
ttl: 100
type: TXT
txt: v=spf1 a mx include:_spf.yourfilter.nl -all
entries: Array

Información TXT
host: ad-telecom.nl
class: IN
ttl: 100
type: TXT
txt: 202002102304150w7stpd3bxg7dlwrfv8n5v2g5kmipu8g3b652xwr9nfljz2sld
entries: Array