HTTP Status Code Lookup
Look up HTTP status codes and their meaning in the browser. Search by number, phrase, or a word from the description. Standard RFC codes and common unofficial CDN or framework codes are included.
| Code | Phrase | Source | Meaning |
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About HTTP Status Code Lookup
Look up HTTP status codes online and read a short meaning for each code, from 100 Continue through 511 Network Authentication Required. This free HTTP status code lookup covers standard RFC codes plus common unofficial values from nginx, IIS, Cloudflare, and frameworks so a 499 or 522 in a log is not a mystery.
Developers, QA, and support teams use a status code reference when a client shows 401 instead of 403, when a redirect should be 301 rather than 302, or when a gateway returns 502. Search by number, reason phrase, or a word such as rate limit. Filter by 1xx, 2xx, 3xx, 4xx, or 5xx to scan a class at a time.
Click a row to pin the code, phrase, and source. Unofficial codes are marked so you can tell a real RFC status from a CDN or platform extension. Pair this page with the HTTP headers viewer when you need the headers that travel with a status.
Lookup runs in your browser with no upload. Use this free HTTP status code list whenever you need a private, fast explanation of 200, 201, 204, 301, 304, 400, 401, 403, 404, 409, 422, 429, 500, 502, 503, and the rest.