Registro IPv4
host: wwwfff.com
class: IN
ttl: 1000
type: A
ip: 127.0.0.1

Servidores DNS Principal (mname) y Secundario (rname)
host: wwwfff.com
class: IN
ttl: 180
type: SOA
mname: f1g1ns1.dnspod.net
rname: freednsadmin.dnspod.com
serial: 1747190123
refresh: 3600
retry: 180
expire: 1209600
minimum-ttl: 180