Registro IPv4
host: modem.ru
class: IN
ttl: 86400
type: A
ip: 91.193.240.42

Servidores DNS Principal (mname) y Secundario (rname)
host: modem.ru
class: IN
ttl: 86400
type: SOA
mname: ns1.modem.ru
rname: hostmaster.ns1.modem.ru
serial: 2021041401
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 86400

Servidor de Correo
host: modem.ru
class: IN
ttl: 86400
type: MX
pri: 5
target: mail1.modem.ru