Here is a decent way of finding out if a site is hosted on Glitch:
- Open Tor Browser.
- Visit the site you want to check.
- If it says “403 Forbidden”, then it could be hosted on Glitch. This is the code of what it says:
<html>
<head><title>403 Forbidden</title></head>
<body bgcolor="white">
<center><h1>403 Forbidden</h1></center>
</body>
</html>
(Yes, there is a blank space on line 7)
Other method:
Attempt to ping the project with UptimeRobot (note: only do this ONCE, or else you could get banned). It should return a 403 status code.