Registro IPv4
host: Bit.do
class: IN
ttl: 3600
type: A
ip: 23.21.31.78

Servidores DNS Principal (mname) y Secundario (rname)
host: Bit.do
class: IN
ttl: 3600
type: SOA
mname: mail.inmailing.com.br
rname: root.localhost
serial: 2022092309
refresh: 14400
retry: 3600
expire: 604800
minimum-ttl: 3600