Registro IPv4
host: udemy.es
class: IN
ttl: 577
type: A
ip: 217.19.248.132

Servidores DNS Principal (mname) y Secundario (rname)
host: udemy.es
class: IN
ttl: 24904
type: SOA
mname: dns1.idp365.net
rname: hostmaster.idp365.net
serial: 2014082601
refresh: 28800
retry: 1800
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: udemy.es
class: IN
ttl: 577
type: MX
pri: 10
target: mail.idp365.net