We usually see a 404 error message if we wrongly typed an address. I sometimes don't mind the error message and simply re-type the address of the site i wish to go.

These 404 message is not just an ordinary prompt when we couldn't find our destination. In fact, this 404 message error means that you located the server but the exact resource location is not available at the time of your visit. It shouldn't be confused with the server not found message, which is explicitly saying that the location or site is truly non-existent. This type means you couldn't connect to the server you requested.

The 404 not found message and the similar ones are actually recognisable standard response codes. The first digit the number 4 indicates a wrong address or a URL. The next digits number 0 and 4 indicates the specific error encountered. Various numeric codes are followed with readable language such as "not found" in this case. Several codes like 204 - No Content, 301 - Moved Permanently, 401 - Unauthorized and many other Hypertext Transfer Protocol (HTTP) response status codes, is part of a world wide web standard.

All these are parts of the world wide web protocol, that is being followed by users of HTTP/1.1. This platform allows building of independent systems separate from data being transferred. It is actually set up to manage objects, links, and sub-links to organise multiple systems in the world wide web. When your browser sends a request, the server response by any status it is design to do like display content or files and other resource available to the requesting browser.

So whenever you see some HTTP response code, it tells you a specific problem in the server, the browser, and the non-existence of the site you are looking for. It's not just someone's funny idea to confuse us further in our searches, but actually a good guide if we understand the coded messages.