Servidores DNS Principal (mname) y Secundario (rname)
host: ruffiancars.co.uk
class: IN
ttl: 86400
type: SOA
mname: dns1.p09.nsone.net
rname: parked.nsone.net
serial: 1740420755
refresh: 43200
retry: 7200
expire: 1209600
minimum-ttl: 86400