Servidores DNS Principal (mname) y Secundario (rname)
host: pilot-freight-services.net
class: IN
ttl: 17001
type: SOA
mname: a1-4.akam.net
rname: hostmaster.pilot-freight-services.net
serial: 2025042300
refresh: 3600
retry: 600
expire: 604800
minimum-ttl: 300