Servidores DNS Principal (mname) y Secundario (rname)
host: progrexionmarketing.com
class: IN
ttl: 3600
type: SOA
mname: ns1.pgx.local
rname: hostmaster.pgx.local
serial: 2022030406
refresh: 900
retry: 600
expire: 86400
minimum-ttl: 3600