Registro IPv4
host: congh.cn
class: IN
ttl: 600
type: A
ip: 8.138.18.56

Servidores DNS Principal (mname) y Secundario (rname)
host: congh.cn
class: IN
ttl: 180
type: SOA
mname: ns11.xincache.com
rname: ns12.xincache.com
serial: 1787926585
refresh: 3600
retry: 180
expire: 1209600
minimum-ttl: 180