Registro IPv4
host: coresv.com
class: IN
ttl: 300
type: A
ip: 54.65.172.3

Servidores DNS Principal (mname) y Secundario (rname)
host: coresv.com
class: IN
ttl: 300
type: SOA
mname: ns1.value-domain.com
rname: hostmaster.coresv.com
serial: 2020081919
refresh: 3600
retry: 900
expire: 604800
minimum-ttl: 300