Status Code

The three-digit result number: 2xx success, 4xx client error, 5xx server error.

What is Status Code?

A status code is the three-digit number at the start of every response: 2xx success, 3xx go elsewhere, 4xx the client made a mistake, 5xx the server failed.

Level: Apprentice · More Web Development terms at this level

Updated September 27, 2026