Registro IPv4
host: 0437.com
class: IN
ttl: 7200
type: A
ip: 221.8.118.242

Servidores DNS Principal (mname) y Secundario (rname)
host: 0437.com
class: IN
ttl: 7200
type: SOA
mname: ns7.cnolnic.net
rname: root.cnolnic.net
serial: 2006112401
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 86400