Registro IPv4
host: office365auth.com
class: IN
ttl: 3603
type: A
ip: 91.195.240.123

Servidores DNS Principal (mname) y Secundario (rname)
host: office365auth.com
class: IN
ttl: 164507
type: SOA
mname: ns1.dnsowl.com
rname: hostmaster.dnsowl.com
serial: 1732734186
refresh: 7200
retry: 1800
expire: 1209600
minimum-ttl: 600