How to use HTTP Status Code Reference
- Enter an HTTP status code or a word in its registry name.
- Review matching records and whether the code is assigned or temporary.
- Follow the named registry reference when you need protocol details.
Example: HTTP Status Code Reference
Look up a common missing-resource response.
You add
Query: 404.
You get
The table returns 404, Not Found and its registry reference.
Supported inputs and limits
The IANA registry snapshot was retrieved 1 October 2026 and states an update date of 15 September 2025. It includes 67 individual entries and eight unassigned ranges. Queries are bounded; this page does not fetch the latest registry or diagnose a server. Unused and unassigned values are distinguished. Temporary 104 includes its recorded 13 November 2026 expiry. Private application codes are outside this registry. Search text is limited to 200 characters; at most 50 text matches are shown.
Where your input is processed
This tool processes your input in this browser. Your text and files are not uploaded to UseFreeTools. Check this tool's limits for anything it may save on your device.
Questions about HTTP Status Code Reference
Does 404 always mean a page was deleted?
The code names the response status, not the site’s history. A missing route, unavailable resource or access policy can affect what a server returns.
Why is 104 marked temporary?
The bundled registry gives it a temporary registration with an expiry. Check the current IANA record before relying on a temporary entry.
Are all numbers from 100 to 599 assigned?
No. The snapshot contains unused entries and unassigned ranges, which this page reports rather than assigning invented names.