What Is The Common Proxy Error List?

A proxy error list is a collection of common error codes and messages that users may encounter when using proxies. These errors help identify issues like blocked requests, authentication failures, etc.

Error Code	Meaning	Proxy Context
301/302 Redirects	Permanent or temporary redirect	Can lead to access loops or misroutes if not handled properly by the proxy
403 Invalid request configuration	The proxy request configuration is incorrect or not allowed.	Often caused by invalid request parameters, unsupported methods or misconfigured proxy settings.
404 Not Found	The resource does not exist	The target URL is incorrect or the resource is unavailable.
407 Proxy Authentication Required	Proxy server requires authentication	Proxy credentials are missing, expired or invalid.
411 Account Blocked	Your account has been blocked. If you think it is a mistake, please contact customer support.	May occur if the proxy IP has been flagged for suspicious activity, policy violations or abuse by the target service. Contact site support if it’s account-specific.
429 Too Many Requests	Rate limit exceeded	Proxy is reusing the same IP too often or sending too many requests in a short time.
464 Connection Not Permitted	Connection to the specified target is not permitted due to security policies.	Usually occurs when the proxy provider or target site blocks connections to restricted domains or ports because of compliance, security rules, or network policies.
465 No Proxies Available	No proxies available in the selected location. Please choose a different targeting configuration or try again later.	Happens when the proxy pool for the chosen country/region is exhausted. Switching location or waiting may resolve the issue.
466 Bandwidth Limit Reached	You’ve reached your bandwidth limit. Buy more data or upgrade your plan to continue.	Triggered when the allocated data package is fully consumed. Requires purchasing additional bandwidth or upgrading the plan.
467 Session Bandwidth Limit Reached	You have reached your session bandwidth limit.	Occurs when the session-based bandwidth allocation is exhausted. Start a new session or upgrade the session plan to continue.
500 Internal Server Error	Server-side issue	Proxy server encountered an unexpected issue. May require retrying the request or contacting provider support.
503 Service Unavailable	Website Server temporarily down	The target site is unavailable or overloaded.