Servidores DNS Principal (mname) y Secundario (rname)
host: pugsportal.com
class: IN
ttl: 172800
type: SOA
mname: ns1.dnsowl.com
rname: hostmaster.dnsowl.com
serial: 1731826116
refresh: 7200
retry: 1800
expire: 1209600
minimum-ttl: 600