Registro IPv4
host: newslettersdelivered.com
class: IN
ttl: 90
type: A
ip: 18.223.17.150

Servidores DNS Principal (mname) y Secundario (rname)
host: newslettersdelivered.com
class: IN
ttl: 900
type: SOA
mname: ns-2027.awsdns-61.co.uk
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: newslettersdelivered.com
class: IN
ttl: 300
type: MX
pri: 10
target: mail.newslettersdelivered.com

Información TXT
host: newslettersdelivered.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 mx a include:mailgun.org ~all
entries: Array