Registro IPv4
host: casonline.com
class: IN
ttl: 3600
type: A
ip: 74.208.236.183

Servidores DNS Principal (mname) y Secundario (rname)
host: casonline.com
class: IN
ttl: 74966
type: SOA
mname: ns1097.ui-dns.com
rname: hostmaster.1and1.com
serial: 2016072500
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 300

Servidor de Correo
host: casonline.com
class: IN
ttl: 3600
type: MX
pri: 2
target: mail.cas-online.com

Servidor de Correo
host: casonline.com
class: IN
ttl: 3600
type: MX
pri: 1
target: casmail.cas-online.com