Registro IPv4
host: ybmteachers.com
class: IN
ttl: 3600
type: A
ip: 203.231.233.240

Servidores DNS Principal (mname) y Secundario (rname)
host: ybmteachers.com
class: IN
ttl: 3600
type: SOA
mname: sisadns131
rname: admin
serial: 41
refresh: 900
retry: 600
expire: 86400
minimum-ttl: 3600