Registro IPv4
host: itcholdings.com
class: IN
ttl: 2711
type: A
ip: 13.248.239.104

Servidores DNS Principal (mname) y Secundario (rname)
host: itcholdings.com
class: IN
ttl: 2733
type: SOA
mname: NS55.WORLDNIC.com
rname: namehost\@WORLDNIC.com
serial: 125013110
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600