Registro IPv4
host: home.cern
class: IN
ttl: 60
type: A
ip: 188.184.76.40

Servidores DNS Principal (mname) y Secundario (rname)
host: home.cern
class: IN
ttl: 300
type: SOA
mname: ext-dns-1.cern.ch
rname: external-dns.cern.ch
serial: 2022122008
refresh: 43200
retry: 10800
expire: 604800
minimum-ttl: 43200