Servidores DNS Principal (mname) y Secundario (rname)
host: travelbookings-us.com
class: IN
ttl: 900
type: SOA
mname: ns-286.awsdns-35.com
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Información TXT
host: travelbookings-us.com
class: IN
ttl: 1800
type: TXT
txt: v=spf1 include:_phishspf.knowbe4.com ~all
entries: Array