Servidores DNS Principal (mname) y Secundario (rname)
host: i-am-not-deaf.com
class: IN
ttl: 21600
type: SOA
mname: ns1-35.azure-dns.com
rname: registry.ports.net
serial: 2023111300
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 28800