HTTP Status Code Lookup
Search a curated reference of 63 entries based on the IANA HTTP status registry and related RFCs. Search codes, English names, or descriptions and filter by response class. This is a fixed reference checked on September 21, 2026, not a live server test.
Key features
- Search code numbers, official names, and brief explanations.
- Filter informational, success, redirect, client-error, and server-error groups.
- Identify unused and obsolete entries and compare method behavior across redirects.
How to use
- Enter a query such as 404 or timeout. Use * to show all entries.
- Optionally select a response class.
- Read matching descriptions and consult official references for full protocol rules.
Use cases
- Understand responses shown in browser developer tools.
- Consult status meanings when documenting an API.
- Interpret redirects and service-error logs.
Frequently asked questions
Does it check a real URL?
No. It searches a built-in reference and does not contact or test a server.
Does it include every number and vendor-specific status?
No. The table covers 63 registry entries, excluding unassigned ranges, temporary code 104, and vendor-specific codes. Check IANA for the latest registry.
Is 418 the teapot code?
That is its historical nickname, but RFC 9110 and the current IANA registry mark it as unused. The reference makes that distinction explicit.
Can a status code alone diagnose a failure?
No. Inspect response headers, content, and logs to determine whether an application, proxy, or gateway produced the response.
Privacy
Input and results are processed locally in your browser without upload or storage by this tool. XML and string inputs are not executed; results are shown as text. Shared site advertising and analytics may operate separately, but tool-use events do not include your input contents.
References
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