When a user visits a website that is missing, there are several possibilities.

• The website has moved or has been removed
• The user's Internet browser can no longer reach the website
• The website is no longer hosted by the user's Internet service provider
• The website's address has changed

The most convenient way to see if a website is available or not is to right click on a link and view the version in the Wayback Machine or Google Cache.

On the other hand, if you use a modern browser, you can use Web Cache Viewer.

You will be able to view the Wayback Machine and Google Cache for any web page, and also right-click on any link to view the version of the page on the Wayback Machine or Google Cache.

Once you install Web Cache Viewer, you will be able to right-click on any link or page to view the Google Cache version or the Wayback Machine version of the page.