Registro IPv4
host: clasespro.com
class: IN
ttl: 1800
type: A
ip: 15.197.172.60

Servidores DNS Principal (mname) y Secundario (rname)
host: clasespro.com
class: IN
ttl: 1720
type: SOA
mname: dns1.name-services.com
rname: info.name-services.com
serial: 1789986565
refresh: 172800
retry: 900
expire: 1814400
minimum-ttl: 300