Servidores DNS Principal (mname) y Secundario (rname)
host: optisnab.ru
class: IN
ttl: 600
type: SOA
mname: ns3.nic.ru
rname: admin.optisnab.ru
serial: 1690355095
refresh: 1440
retry: 3600
expire: 259200
minimum-ttl: 600

Servidor de Correo
host: optisnab.ru
class: IN
ttl: 3600
type: MX
pri: 10
target: emx.mail.ru

Información TXT
host: optisnab.ru
class: IN
ttl: 3600
type: TXT
txt: v=spf1 redirect=_spf.mail.ru
entries: Array