Servidores DNS Principal (mname) y Secundario (rname)
host: ans.com
class: IN
ttl: 21600
type: SOA
mname: auth51.ns.uu.net
rname: hostmaster.uu.net
serial: 200005302
refresh: 7200
retry: 1800
expire: 1728000
minimum-ttl: 21600

Servidor de Correo
host: ans.com
class: IN
ttl: 21600
type: MX
pri: 30
target: mailrelay00.ny.ops.us.uu.net

Servidor de Correo
host: ans.com
class: IN
ttl: 21600
type: MX
pri: 10
target: mailrelay00.aa.ops.us.uu.net