Registro IPv4
host: bookfi.com
class: IN
ttl: 1200
type: A
ip: 52.40.42.113

Registro IPv4
host: bookfi.com
class: IN
ttl: 1200
type: A
ip: 44.232.173.249

Servidores DNS Principal (mname) y Secundario (rname)
host: bookfi.com
class: IN
ttl: 1800
type: SOA
mname: launch1.spaceship.net
rname: support.spaceship.com
serial: 1764554443
refresh: 43200
retry: 3600
expire: 604800
minimum-ttl: 3600