Servidores DNS Principal (mname) y Secundario (rname)
host: pool85-48-186.static.orange.es
class: IN
ttl: 18630
type: SOA
mname: dnsa01m-men4.net.orange.es
rname: dnsmaster.es.orange-ftgroup.com
serial: 2006061906
refresh: 86400
retry: 7200
expire: 2592000
minimum-ttl: 172800