Servidores DNS Principal (mname) y Secundario (rname)
host: vrtc.net
class: IN
ttl: 21600
type: SOA
mname: ns.vrtc.net
rname: postmaster.ns.vrtc.net
serial: 123
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 86400

Servidor de Correo
host: vrtc.net
class: IN
ttl: 21600
type: MX
pri: 10
target: mail.vrtc.net

Información TXT
host: vrtc.net
class: IN
ttl: 21600
type: TXT
txt: v=spf1 ip4:202.69.113.11 +mx -all
entries: Array