Registro IPv4
host: 51yycn.net
class: IN
ttl: 600
type: A
ip: 38.173.242.81

Servidores DNS Principal (mname) y Secundario (rname)
host: 51yycn.net
class: IN
ttl: 3600
type: SOA
mname: ns1.domainnamedns.com
rname: support.namens.net
serial: 1733473218
refresh: 3600
retry: 1800
expire: 1209600
minimum-ttl: 180