Servidores DNS Principal (mname) y Secundario (rname)
host: mecon.ar
class: IN
ttl: 21600
type: SOA
mname: relay1.mecon.gov.ar
rname: hostmaster.mecon.gov.ar
serial: 2020021009
refresh: 21600
retry: 3600
expire: 3600000
minimum-ttl: 21600