Registro IPv4
host: twsing.com
class: IN
ttl: 600
type: A
ip: 156.239.42.90

Servidores DNS Principal (mname) y Secundario (rname)
host: twsing.com
class: IN
ttl: 3600
type: SOA
mname: ns1.myhostadmin.net
rname: dnsconct.myhostadmin.net
serial: 2026040609
refresh: 3600
retry: 300
expire: 1209600
minimum-ttl: 3600