Servidores DNS Principal (mname) y Secundario (rname)
host: deepak.cyou
class: IN
ttl: 600
type: SOA
mname: dns.bizcn.com
rname: dnsconct.bizcn.com
serial: 1773013481
refresh: 28800
retry: 14400
expire: 14400
minimum-ttl: 600