> For the complete documentation index, see [llms.txt](https://developers.oxylabs.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.oxylabs.io/products/pt-br/proxies/dedicated-isp-proxies/self-service/response-codes.md).

# Códigos de resposta

Saiba mais sobre os códigos de resposta e erros comuns para Dedicated ISP Proxies e seus significados.

Estes são os códigos de resposta mais comuns que você pode obter ao usar Oxylabs Dedicated ISP Proxies.

<table><thead><tr><th width="166">Código de resposta</th><th width="254.33333333333331">Mensagem de erro</th><th>Descrição</th></tr></thead><tbody><tr><td><code>407</code></td><td><code>Autenticação de proxy necessária</code></td><td>As credenciais do usuário não foram fornecidas / estão incorretas / o usuário está se conectando de um IP que não está na lista de permissões.</td></tr><tr><td><code>504</code></td><td><code>Tempo limite do gateway</code></td><td>Um servidor proxy atingiu o tempo limite, aguardando uma resposta do servidor de destino. Normalmente leva cerca de 60s.</td></tr><tr><td><code>503</code></td><td><code>Serviço indisponível</code></td><td>Falha ao conectar ao servidor de destino. Falha de DNS ao resolver o endereço do servidor de destino.</td></tr><tr><td><code>404</code></td><td><code>Não encontrado</code></td><td>O domínio especificado não pôde ser encontrado.</td></tr><tr><td><code>500</code></td><td><code>Erro interno do servidor</code></td><td>Tivemos um problema com nosso servidor. Tente novamente mais tarde.</td></tr><tr><td><code>429</code></td><td><code>Muitas requisições</code></td><td>O usuário atingiu o limite de threads/sessões simultâneas.</td></tr></tbody></table>


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