Websites could be down due to many reasons. Common problems are owing to web server problems or the problems with internet connection. Imagine you visit a website and it’s not working. But your friends say that it’s working. Sounds like the particular website doesn’t work only for you. Maybe the webmaster has blocked your ip address.
Can’t you check the website is down only for you without asking your friend? you Can. downforeveryoneorjustme is a great simple website which check websites’ real status.
I checked youtube.com as an example.
Actually below web site does not exist. This is what it says.