Servidores DNS Principal (mname) y Secundario (rname)
host: 123bt.ru
class: IN
ttl: 300
type: SOA
mname: ns1.selectel.ru
rname: support.selectel.ru
serial: 2022062819
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 300

Servidor de Correo
host: 123bt.ru
class: IN
ttl: 3600
type: MX
pri: 10
target: mx.yandex.net

Información TXT
host: 123bt.ru
class: IN
ttl: 3600
type: TXT
txt: v=spf1 redirect=_spf.yandex.net
entries: Array