Registro IPv4
host: firstdonoharm.com
class: IN
ttl: 300
type: A
ip: 204.74.99.100

Servidores DNS Principal (mname) y Secundario (rname)
host: firstdonoharm.com
class: IN
ttl: 86400
type: SOA
mname: udns1.cscdns.net
rname: hostmaster.cscdns.net
serial: 2017051212
refresh: 86400
retry: 86400
expire: 86400
minimum-ttl: 86400