Registro IPv4
host: u3ps.com
class: IN
ttl: 900
type: A
ip: 173.254.30.100

Servidores DNS Principal (mname) y Secundario (rname)
host: u3ps.com
class: IN
ttl: 21600
type: SOA
mname: ns1.justhost.com
rname: root.just2047.justhost.com
serial: 2025112500
refresh: 86400
retry: 7200
expire: 3600000
minimum-ttl: 300