HTTP response status codes indicate whether a specific http request has been successfully completed.

Responses are grouped in five classes:

Common HTTP status code:-

1xxs – Informational : Information response indicates that everything is ok

2xxs – Success : Server successfully received the request and successfully processed the request

3xxs – Redirection: Redirectional response status indicates that a further action is necessary to complete the request.

4xxs – Client errors : Client error, indicating possibly incorrect syntax, or a different user error that prevents fulfilling the request.

5xxs – Server error : Server error that presented what seems to be a valid request from being fulfilled.