418x -

The specific error is returned by a teapot when it is requested to brew coffee. According to the spec:

If you go to ://google.com , the page will literally tip over and "pour" into a cup when clicked. The specific error is returned by a teapot

In 1998, the Internet Engineering Task Force (IETF) released as an April Fools' Joke. It defined the "Hyper Text Coffee Pot Control Protocol" (HTCPCP). The specific error is returned by a teapot