Servidores DNS Principal (mname) y Secundario (rname)
host: clarin.com.ar
class: IN
ttl: 1800
type: SOA
mname: cash.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2377734489
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: clarin.com.ar
class: IN
ttl: 300
type: MX
pri: 0
target: clarin-com-ar.mail.protection.outlook.com