Servidores DNS Principal (mname) y Secundario (rname)
host: h-56-24.A328.priv.bahnhof.se
class: IN
ttl: 14400
type: SOA
mname: auto-ns.bahnhof.net
rname: hostmaster.bahnhof.se
serial: 2026091515
refresh: 1800
retry: 600
expire: 604800
minimum-ttl: 3600