When the Web server hosting the website responds with this status code, it means it has successfully completed the HTTP request sent by the client. This response might be used when the server successfully completes a GET request from the client and returns the requested resource (a website, perhaps).

This response is returned when the Web server hosting the website believes that the URL provided by the client has been permanently redirected to a different URL. The client is expected to try the new URL immediately.

This response means that the Web server hosting the website does not support the media type that was transmitted by the client.

This status code was introduced on April 1, 1998, by the IETF (Internet Engineering Task Force) when they launched HTCPCP/1.0 (Hypertext Coffee Pot Control Protocol). The idea was that the Web server hosting the website should return this response if the client attempted to brew coffee with a teapot. It was an April Fools’ joke and it is not typica [..]

This response means that the Web server hosting the website has received the first part of an HTTP request and that the client (a Web browser, for instance) should continue by sending the rest of the request. This is an interim response, and the server will send a final response when the request is completed.

This response is used when the client issues an HTTP request to switch protocols (from an older version of HTTP to a newer version, perhaps) and the Web server hosting the website is willing to comply.

This interim response indicates that the Web server hosting the website has received and is processing the HTTP request sent by the client. This response is usually only sent when the Web server has reason to believe the request will take a long time to complete.

This response means that the Web server hosting the website has fulfilled the HTTP request sent by the client, resulting in the creation of a new resource (a Web page, perhaps) on the server. The response should include the new resource’s Web address, or URL

When the client receives this response from the Web server hosting the website, it means the HTTP request has been accepted for processing. This does not necessarily mean the request will be completed; it could be disallowed when processing occurs.

This status code means the Web server hosting the website has completed the HTTP request sent by the client, but some of the data returned is from a third party and not the server processing the request. In every other way, it is like a 200 OK response.