- Informational Response Codes: These signify that the server has received the request and is processing it. - Successful Response Codes: Indicate that the request was successfully received, understood, and accepted. - Redirection Response Codes: Signal that further action needs to be taken to complete the request. - Client Error Response Codes: Reflect an error on the client side due to a bad request. - Server Error Response Codes: Point out an issue on the server side while fulfilling a valid request.