User blog comment:Dragonjet/KC3改/@comment-110.159.12.25-20150731170109/@comment-26091666-20150803042055

I'd say for those that are in the same country (physically) as you are may most likely go through the same routing nodes. Others outside of your country is uncertain but may also go through the same routes.

These are hard to verify without understanding a bit of networking but traceroute can usually prove those.

In any case it is still a fault with the routing I suspect but also something that it is beyond your reach. Other than talking with your ISP there isn't much other way.