All Root Servers use IP anycast and operate root DNS servers at many locations in the world. This talk proposes an idea of IP anycast analysis using the DITL dataset.
To analyze the effect of IP anycast, we need to know the location of each instance, location information of clients, and latency information between clients and root servers.
The location information of each instance can be extracted from the directory name of the DITL dataset.
The location information of clients can be extracted from query source IP addresses using IP map services. The latency information between clients and root servers is extracted from TCP queries.
Then, some results of the effect of anycast on M-root will be shown.
This approach may be used as searching the under-served area of root DNS servers (and TLD DNS servers).
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