Servidores DNS Principal (mname) y Secundario (rname)
host: pelatihan.sdmuhcc-yogya.sch.id
class: IN
ttl: 21600
type: SOA
mname: ns121.idcloudhosting.com
rname: btdgroup\.01.gmail.com
serial: 2025021101
refresh: 10800
retry: 3600
expire: 1209600
minimum-ttl: 10800