Servidores DNS Principal (mname) y Secundario (rname)
host: polizei-nds.de
class: IN
ttl: 90
type: SOA
mname: ns-a.niedersachsen.de
rname: dns-admin.niedersachsen.de
serial: 2025082700
refresh: 10800
retry: 3600
expire: 1814400
minimum-ttl: 86400