The prefix is a common trick used by pirate sites. Instead of using www , they add a number (like 0) to bypass browser blacklists and DNS filters. It mimics a subdomain but is designed to look like a legitimate address to the casual user.
In the legitimate business world, branding is sacred. Companies spend millions on clean URLs, short domains, and memorable spellings. In the world of piracy, branding is a liability. "GoMovies" was a brand once—a popular, centralized hub. But brands can be seized, shut down, and litigated into dust. www0gomoviesdad