Servidores DNS Principal (mname) y Secundario (rname)
host: documentmailbox.com
class: IN
ttl: 240
type: SOA
mname: edns1.ultradns.com
rname: premiumdns.support.neustar
serial: 2019072379
refresh: 3600
retry: 3600
expire: 691200
minimum-ttl: 240

Información TXT
host: documentmailbox.com
class: IN
ttl: 900
type: TXT
txt: google-site-verification=elWALsjlx91EErYjrJRZLmBYwo6ApmO1CozjqtYutew
entries: Array

Información TXT
host: documentmailbox.com
class: IN
ttl: 900
type: TXT
txt: v=spf1 -all
entries: Array