Registro IPv4
host: ybltw.com
class: IN
ttl: 311
type: A
ip: 120.24.50.121

Servidores DNS Principal (mname) y Secundario (rname)
host: ybltw.com
class: IN
ttl: 312
type: SOA
mname: dns17.hichina.com
rname: hostmaster.hichina.com
serial: 2025042417
refresh: 3600
retry: 1200
expire: 86400
minimum-ttl: 600