Some of the HTTP status codes
2xx is Success, some of the 2xx are below,
200 OK
204 No Content
3xx is Redirection, some of the 3xx are below,
300 Multiple Choices – client has option to choose one from many
301 Moved Permanently
307 Temporary Redirect (since HTTP/1.1)
308 Permanent Redirect
4xx is Client Error, some of the 4xx are below,
400 Bad Request
401 Unauthorized
403 Forbidden
404 Not Found
5xx Server Error, some of the 5xx are below,
500 Internal Server Error
501 Not Implemented
502 Bad Gateway
503 Service Unavailable
504 Gateway Time-out