Registro IPv4
host: nbxl.com
class: IN
ttl: 7200
type: A
ip: 208.91.197.27

Servidores DNS Principal (mname) y Secundario (rname)
host: nbxl.com
class: IN
ttl: 86400
type: SOA
mname: udns1.cscudns.com
rname: hostmaster.cscdns.net
serial: 2019030108
refresh: 86400
retry: 86400
expire: 86400
minimum-ttl: 86400