Registro IPv4
host: learn2doo.biz
class: IN
ttl: 28800
type: A
ip: 209.99.64.21

Servidores DNS Principal (mname) y Secundario (rname)
host: learn2doo.biz
class: IN
ttl: 7200
type: SOA
mname: zdns1.hostingraja.org
rname: raja1578.yahoo.com
serial: 2015010203
refresh: 7200
retry: 7200
expire: 172800
minimum-ttl: 7200