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)
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.