I found this presentation:
https://www.ripe.net/support/training/ripe-ncc-educa/presentations/measuring-reachability-of-your-web-server-using-ripe-atlas.pdf
 
I ran a test from 40 Israeli probes to see if there are any issues accessing zoom.us:
https://atlas.ripe.net/measurements/28912347/#probes [1st run]
https://atlas.ripe.net/measurements/28912916/#probes [2nd run]

It shows all in Israel getting to Zoom.us with an average of 150ms.
But 3 sites –  show under 1ms response time – as if they run some local proxy.   I checked with them and they said they have nothing local.

So how come probe 17832 gets .869ms and probe 17875 gets .610ms and probe 27091 gets .718ms to zoom.us?

Thanks,

Hank