Registro IPv4
host: gb-opt.ru
class: IN
ttl: 3600
type: A
ip: 212.109.220.49

Servidores DNS Principal (mname) y Secundario (rname)
host: gb-opt.ru
class: IN
ttl: 3600
type: SOA
mname: firstvds.ru
rname: greenballopt.gmail.com
serial: 2021120201
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 86400

Servidor de Correo
host: gb-opt.ru
class: IN
ttl: 3600
type: MX
pri: 20
target: mail.gb-opt.ru

Servidor de Correo
host: gb-opt.ru
class: IN
ttl: 3600
type: MX
pri: 10
target: mail.gb-opt.ru