What counter? Pinging?
http://floppy.museum/status.htm
Does not reflect ICMP updates after refresh.
But it seems more likely traffic is being forwarded or even rewritten at Layer 4. I don't think running something like HAProxy in non-caching mode would invalidate the website's claims. Even an IP forwarding solution (eg a GRE tunnel) might have http://shouldiblockicmp.com/ issues.
http://floppy.museum/status.htm
am I missing something here, a counter is a counter. Unless the site is cached with a CDN which is... a CDN in front of an sx286 PC.
Could do the same thing with a VIC20, or an AM crystal radio for that matter.