Registro IPv4
host: thefirstserver.com
class: IN
ttl: 14400
type: A
ip: 72.9.145.44

Servidores DNS Principal (mname) y Secundario (rname)
host: thefirstserver.com
class: IN
ttl: 21600
type: SOA
mname: ssd1.thefirstserver.com
rname: admin.thefirstserver.com
serial: 2025070401
refresh: 3600
retry: 1800
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: thefirstserver.com
class: IN
ttl: 14400
type: MX
pri: 0
target: thefirstserver.com