Registro IPv4
host: usdai.com
class: IN
ttl: 90
type: A
ip: 208.98.40.20

Servidores DNS Principal (mname) y Secundario (rname)
host: usdai.com
class: IN
ttl: 21600
type: SOA
mname: www.usdai.com
rname: usdai.com
serial: 2008080300
refresh: 1800
retry: 3600
expire: 604800
minimum-ttl: 3600