Servidores DNS Principal (mname) y Secundario (rname)
host: mydandp.com
class: IN
ttl: 7200
type: SOA
mname: ns1.markmonitor.com
rname: hostmaster.markmonitor.com
serial: 2020122202
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 7200

Información TXT
host: mydandp.com
class: IN
ttl: 21600
type: TXT
txt: v=spf1 include:spf.messagelabs.com -all
entries: Array