Registro IPv4
host: 74mail.ru
class: IN
ttl: 1100
type: A
ip: 178.218.223.37

Servidores DNS Principal (mname) y Secundario (rname)
host: 74mail.ru
class: IN
ttl: 21600
type: SOA
mname: ns1.ihc.ru
rname: info.ihc.ru
serial: 2012122901
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: 74mail.ru
class: IN
ttl: 3333
type: MX
pri: 5
target: mail.74mail.ru