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HTTP Status Code Lookup

Search the meaning and the common cause of every standard HTTP status code.

Look up a status code

Matches: —
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The whole code table ships with the page, so lookups work without a network connection.

How to use the HTTP Status Code Lookup

  1. Type a code such as 404 or a phrase such as timeout into the search box.
  2. Narrow the list with the class selector if you only want 4xx or 5xx codes.
  3. Read the meaning and common cause, then copy the results if you need them.

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Frequently Asked Questions

Common questions about the free online http status code lookup.

It is a three digit number in the response that tells the client how the request was handled, grouped into the 1xx to 5xx classes.
The server understood the request but could not find that resource, which usually means a mistyped URL or a page that was removed.
A 401 means you are not authenticated yet, while a 403 means you are authenticated but not allowed to touch that resource.
Anything in the 4xx class points at the request or the client, while the 5xx class points at a fault on the server side.
Usually not. Redirect codes tell the client to request the same resource at another URL, which is normal for a moved page.
Type part of the name, such as not found or timeout, into the search box and the matching codes are listed straight away.
Yes. The whole status code table is part of the page, so searching needs no network request and nothing is uploaded.
Yes, the tool is completely free with no account, no sign-up and no limit on how many codes you search.

Last updated: October 10, 2026