Registro IPv4
host: writ.ist
class: IN
ttl: 300
type: A
ip: 43.133.166.122

Servidores DNS Principal (mname) y Secundario (rname)
host: writ.ist
class: IN
ttl: 300
type: SOA
mname: ns1.domains
rname: the.dns.cool
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 300