Registro IPv4
host: 56k.us
class: IN
ttl: 7200
type: A
ip: 192.3.158.147

Servidores DNS Principal (mname) y Secundario (rname)
host: 56k.us
class: IN
ttl: 10800
type: SOA
mname: ns1.bootnetworks.com
rname: dns.bootnetworks.com
serial: 2015111401
refresh: 10800
retry: 3600
expire: 777600
minimum-ttl: 3600