Verificador de propagação DNS

After updating a DNS record, changes do not appear instantly worldwide — they propagate gradually as resolvers refresh their caches according to the record's TTL. Confirming that a critical change (such as a new A record after a server migration or an updated MX record after switching email providers) has reached all major resolvers is the only way to be sure end users are getting the correct answer.

This tool queries a set of globally distributed DNS resolvers — including Google, Cloudflare, OpenDNS, and regional providers — and shows each resolver's current response, allowing you to identify which regions have the new record and which are still returning stale data.

Como verificar a propagação DNS online

1. 1

   Insira seu domínio e tipo de registro

   Especifique o nome de domínio e o tipo de registro DNS a verificar (A, AAAA, MX, CNAME, etc.).

2. 2

   A ferramenta consulta múltiplos resolvedores

   O FileCrank consulta seu registro DNS em múltiplos resolvedores DNS globais (Cloudflare, Google, Quad9, etc.) para verificar a consistência.

3. 3

   Veja o status de propagação

   A ferramenta exibe se cada resolvedor tem o novo registro, o endereço IP ou valor retornado e o TTL.

How DNS Propagation Works

When you update a DNS record at your registrar or DNS provider, the authoritative name servers immediately serve the new value. However, recursive resolvers worldwide have cached the previous value for up to the TTL duration. Each resolver independently refreshes its cache by querying the authoritative server after the TTL expires, so propagation is not a broadcast event but a gradual cache expiry.

Lowering the TTL to 60–300 seconds before making a change minimises the propagation window. After the change, resolvers with the old TTL still cached will continue serving stale data until expiry. Checking multiple resolvers gives you a real-time map of propagation progress rather than a binary 'done/not done' answer.

Por que usar o Verificador de Propagação DNS do FileCrank

• ✓ Verifica o status do registro DNS em múltiplos resolvedores globais em segundos
• ✓ Verifica instantaneamente tipos de registro A, AAAA, MX, CNAME, TXT e outros
• ✓ Exibe valores DNS atuais e TTL de cada resolvedor para comparação
• ✓ Ajuda a solucionar atrasos de propagação DNS e incompatibilidades de configuração
• ✓ Essencial para migrações de domínio, atualizações DNS e alterações de configuração de e-mail

Recursos e Especificações

Tamanho máx. do arquivo

Até 100 MB

Privacidade

Arquivos excluídos após cerca de uma hora

Preço

Grátis, sem cadastro

Processamento

No servidor

Protocolo

DNS-sobre-HTTPS

Resolvedores consultados

8+ resolvedores globais (Cloudflare, Google, Quad9, etc.)

Tipos de registro suportados

A, AAAA, MX, CNAME, TXT, NS

Custo

Gratuito — sem limites

Perguntas Frequentes

Propagation Checker vs. Single dig Query

Running dig against a single resolver tells you only what that one resolver sees — often your local ISP's resolver, which may behave differently from resolvers in other regions. A propagation checker queries many resolvers simultaneously, revealing geographic inconsistencies and helping you estimate how many users are still seeing stale records during a migration window.

Ferramentas Relacionadas