Servidores DNS Principal (mname) y Secundario (rname)
host: arprom.su
class: IN
ttl: 900
type: SOA
mname: ns1.masterhost.ru
rname: hostmaster.masterhost.ru
serial: 1714708429
refresh: 28800
retry: 7200
expire: 1209600
minimum-ttl: 600

Servidor de Correo
host: arprom.su
class: IN
ttl: 900
type: MX
pri: 10
target: mx.yandex.net

Información TXT
host: arprom.su
class: IN
ttl: 900
type: TXT
txt: v=spf1 redirect=_spf.yandex.net
entries: Array