Servidores DNS Principal (mname) y Secundario (rname)
host: jsc.nasa.gov
class: IN
ttl: 600
type: SOA
mname: a1-32.akam.net
rname: dns.nasa.gov
serial: 20028978
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 300


Información TXT
host: jsc.nasa.gov
class: IN
ttl: 600
type: TXT
txt: v=spf1 -all
entries: Array
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