Registro DMARC
v=DMARC1; p=none; sp=none; rua=mailto:mail@focus.su

Registro IPv4
host: focus.su
class: IN
ttl: 31
type: A
ip: 212.109.192.157

Servidores DNS Principal (mname) y Secundario (rname)
host: focus.su
class: IN
ttl: 32
type: SOA
mname: dns1.yandex.net
rname: dns-hosting.yandex.ru
serial: 61
refresh: 900
retry: 90
expire: 86400
minimum-ttl: 900

Servidor de Correo
host: focus.su
class: IN
ttl: 20732
type: MX
pri: 60
target: focus.ural.ru

Servidor de Correo
host: focus.su
class: IN
ttl: 20732
type: MX
pri: 70
target: mail.focus.su

Información TXT
host: focus.su
class: IN
ttl: 932
type: TXT
txt: v=spf1 +mx +a:focus.su ip4:212.109.192.157 ~all
entries: Array