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About this HTTP Status Codes
HTTP Status Codes is a searchable reference for the full set of HTTP response status codes, from 100 Continue to 511. Look up what a code actually means the next time an API answers with something you have never seen, or when 404 versus 410 matters.
How to use the HTTP Status Codes
- Search by code number or by keyword, such as redirect or timeout.
- Read the meaning and the typical cause for each match.
- Jump back to your client or server code with the answer.
Good to know
- The 4xx family is the client sending something wrong; 5xx is the server failing to handle a valid request.
- 301 and 302 are not interchangeable for SEO: permanent versus temporary redirects behave differently.
- 418 is real, and yes, it is the teapot.