Registro IPv4
host: freecos.net
class: IN
ttl: 21600
type: A
ip: 157.7.44.168

Servidores DNS Principal (mname) y Secundario (rname)
host: freecos.net
class: IN
ttl: 2560
type: SOA
mname: dns0.heteml.jp
rname: hostmaster.freecos.net
serial: 1717748656
refresh: 16384
retry: 2048
expire: 1048576
minimum-ttl: 2560