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by timrivera 4539 days ago
definitely not doing Anycast. As I wrote just a few days ago [1] github.map.fastly.net resolves to a different IP address based on the geographic location of the user. The exact server location might be approximated from the X-Served-By response header:

  X-Served-By: cache-fra1225-FRA
  X-Served-By: cache-d46-DAL
[1] https://news.ycombinator.com/item?id=6975830