Registro IPv4
host: circleten.org
class: IN
ttl: 300
type: A
ip: 40.71.11.142

Servidores DNS Principal (mname) y Secundario (rname)
host: circleten.org
class: IN
ttl: 21600
type: SOA
mname: primary.guardeddns.net
rname: dns-admin.guardeddns.net
serial: 167
refresh: 28800
retry: 450
expire: 1209600
minimum-ttl: 900