Registro IPv4
host: eswlman.cn
class: IN
ttl: 5
type: A
ip: 121.127.234.140

Servidores DNS Principal (mname) y Secundario (rname)
host: eswlman.cn
class: IN
ttl: 600
type: SOA
mname: ns1.julydns.com
rname: master.jmdns.com
serial: 1763277463
refresh: 3600
retry: 1200
expire: 86400
minimum-ttl: 600