Every website used to be like “www.example.com”. Now I rarely encounter this “www.”. Why did it even exist and where has it gone? I also used to run into websites with legitimate domains, but “ww1.” instead of “www.”, these were probably phishing sites, but how did this actually work on top of legitimate domains?
If you didn’t mean the browser, then I don’t see how this makes any sense:
What’s “it” here which is attempting something? It’s not the website since the address was not valid, and a website wouldn’t redirect you to a “www” if it wasn’t valid either and was going to result in a 404. So who’s “attempting” to unsuccessfully use the “www” subdomain?