Registro IPv4
host: cfemex.com
class: IN
ttl: 3600
type: A
ip: 159.16.1.201

Servidores DNS Principal (mname) y Secundario (rname)
host: cfemex.com
class: IN
ttl: 3600
type: SOA
mname: ns1.a0.impervasecuredns.net
rname: hostmaster.imperva.com
serial: 5
refresh: 3600
retry: 600
expire: 604800
minimum-ttl: 3600