Servidores DNS Principal (mname) y Secundario (rname)
host: axa-distributors.biz
class: IN
ttl: 14400
type: SOA
mname: dns1.cscdns.net
rname: hostmaster.cscdns.net
serial: 2020100603
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 14400