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HTTP Status Code Lookup - Search & Learn HTTP Response Codes Online

Quickly look up meanings, specifications, causes, and troubleshooting fixes for 1xx, 2xx, 3xx, 4xx, and 5xx HTTP status codes.

This tool runs in your browser.
Enter a code to look it up.

How to use

  1. 01Enter a status code.
  2. 02Look up its meaning.

FAQ

What do the primary digit classes of HTTP status codes signify?

1xx indicates informational status, 2xx success, 3xx redirection, 4xx client errors (e.g. 404 Not Found), and 5xx internal server errors (e.g. 500).

How do 301 and 302 redirects affect SEO differently?

A 301 redirect signals permanent relocation and transfers accumulated link equity; a 302 redirect represents temporary rerouting without passing equity.

Does this lookup tool require network connectivity?

No. The entire status code specification dictionary is loaded locally, enabling instant offline search without server dependencies.