Servidores DNS Principal (mname) y Secundario (rname)
host: iks360.net
class: IN
ttl: 600
type: SOA
mname: ns1.cnolnic.net
rname: root.cnolnic.net
serial: 2006112401
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 86400