I live in Israel, I play on EU servers, and my usual ping is around 115ms.
For the past few days (maybe 4), it has been at 220 - 240 constantly, never lower than 215. No other games had this issue, and when I checked my ping to 8.8.8.8 (Google) it was the same as before (about 90ms).
I later tried to VPN to Germany (Frankfurt) using Windscribe, and my ping was at about 120ms.
Extra bit of info:
When I looked at the netgraph (in the Practice Range), when I wasn’t using a VPN I was connected to cdg1 and while I was using the VPN I was connected to ams1.
My friends (who are also from Israel) don’t have this problem, so I’m not sure whether me or Blizzard are the source of the problem.