1337x proxy sites work by acting as an intermediary between your device and the original 1337x server. When your ISP blocks 1337x, you can't access it directly. But when you use a proxy, your request is rerouted through another server that isn’t blocked, allowing you to view the content as if you're accessing it from a region where the site is available. https://www.techtoreview.com/Internet/1337x-proxy-sites-and-alternatives.html