HTTP status codes you should know

These codes are defined in RFC 9110. To save you from reading the entire document (which is about 200 pages), here is a summary of the most common ones.

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Diagram

The response codes for HTTP are divided into five categories:

Informational (100-199)

Success (200-299)

Redirection (300-399)

Client Error (400-499)

Server Error (500-599)