Besides Amazon, is there any other latency based DNS service? I tried Rage4. But its GeoDNS not always work well. Sometimes, it will provide an incorrect IP to one location far away. I guess IP location database does not always correct. At this moment, Amazon's Latency based DNS is pretty accurate in taking user to the correct location. However, there are such a few locations available in Amazon and is difficult if you need to find tune the routing. So I am looking for alternative.
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