Registro IPv4
host: euro21.com
class: IN
ttl: 3600
type: A
ip: 202.31.187.204

Servidores DNS Principal (mname) y Secundario (rname)
host: euro21.com
class: IN
ttl: 3600
type: SOA
mname: ns4.uhost.co.kr
rname: hostmaster.euro21.com
serial: 0
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600