Even it's stated AUS/NZ server, the server is actually located in Singapore. So you can use VPN and route to Singapore directly, I am getting 160ms doing that. Hope this help. Various VPN has various results too depending on your location, so make sure you try before you purchase any of those.

Thanks for that info Wkkay, in that case the ip locator is wrong or not up to date.

@Aleunne, you can try battleping, wtfast, pingzapper etc.. I tried a lot of them and battleping gives me the best latency. I am connecting to d3 aus/nz now at 160-170ms. You can try battleping free trial (dc every 20min) and test how it works for you. Trial and error all their MY/SG servers and find the best one for you.

edit: make sure you are connecting to aus server when you try.  I am using streamyx 8Mbps, you can find all the ip address of battle.net servers here: https://us.battle.net/support/en/article/pe...ng-a-traceroute