Registro IPv4
host: tcythg.edu.vn
class: IN
ttl: 299
type: A
ip: 45.252.251.51

Servidores DNS Principal (mname) y Secundario (rname)
host: tcythg.edu.vn
class: IN
ttl: 3600
type: SOA
mname: ns1.zonedns.vn
rname: root.tcythg.edu.vn
serial: 2025021405
refresh: 1200
retry: 600
expire: 1209600
minimum-ttl: 3600