Registro IPv4
host: exchangelabs.com
class: IN
ttl: 300
type: A
ip: 65.55.94.87

Servidores DNS Principal (mname) y Secundario (rname)
host: exchangelabs.com
class: IN
ttl: 90
type: SOA
mname: sa0mgt0101dc003.prdmgt01.prod.exchangelabs.com
rname: msnhst.microsoft.com
serial: 2012661242
refresh: 300
retry: 120
expire: 2419200
minimum-ttl: 60

Información TXT
host: exchangelabs.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 include:hotmail.com include:spf.messaging.microsoft.com -all
entries: Array