Registro IPv4
host: r18.com
class: IN
ttl: 86400
type: A
ip: 3.90.75.138

Servidores DNS Principal (mname) y Secundario (rname)
host: r18.com
class: IN
ttl: 86400
type: SOA
mname: ns1.broker.xxx
rname: admin.broker.xxx
serial: 1746631572
refresh: 3600
retry: 1800
expire: 604800
minimum-ttl: 86400