Understanding HTTP Response Code Categories

Informational Responses (1xx)

These codes indicate that the request has been received and the process is continuing. Example: 100 Continue.

Successful Responses (2xx)

These codes signify that the request was successfully received, understood, and accepted. Example: 200 OK.

Redirection Messages (3xx)

These codes indicate that further action needs to be taken by the user agent to fulfill the request. Example: 301 Moved Permanently.

Client Error Responses (4xx)

These codes indicate that the client seems to have made an error. Example: 404 Not Found.

Server Error Responses (5xx)

These codes indicate that the server failed to fulfill a valid request. Example: 500 Internal Server Error.