Registro IPv4
host: pennlink.com
class: IN
ttl: 300
type: A
ip: 204.74.99.100

Servidores DNS Principal (mname) y Secundario (rname)
host: pennlink.com
class: IN
ttl: 21600
type: SOA
mname: pdns87.ultradns.com
rname: alee.global-indemnity.com
serial: 2014013200
refresh: 86400
retry: 86400
expire: 86400
minimum-ttl: 86400