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by jlgaddis 4467 days ago
Would you mind posting a traceroute to 8.8.8.8? I'm curious as to the "how", e.g. if they're announcing the IP/subnet into BGP or (assuming traffic flows through them) if they're just transparently redirecting (DNAT, in effect) it to their own DNS servers.
1 comments

  traceroute to 208.67.222.222 (208.67.222.222), 30 hops max, 60 byte packets
   1  192.168.1.1 (192.168.1.1)  2.525 ms  3.372 ms  8.410 ms
   2  78.180.240.1.dynamic.ttnet.com.tr (78.180.240.1)  26.861 ms  28.677 ms  30.683 ms
   3  81.212.78.13.static.turktelekom.com.tr (81.212.78.13)  32.834 ms  33.887 ms  34.726 ms
   4  gayrettepe-t2-3-gayrettepe-t3-5.turktelekom.com.tr.205.212.81.in-addr.arpa (81.212.205.105)  36.738 ms  37.718 ms  39.747 ms
   5  ulus-t2-3-gayrettepe-t2-3.turktelekom.com.tr.204.212.81.in-addr.arpa (81.212.204.205)  48.947 ms  49.867 ms  51.937 ms
   6  ulus-t3-4-ulus-t2-3.turktelekom.com.tr.204.212.81.in-addr.arpa (81.212.204.149)  56.001 ms  27.122 ms  29.496 ms
   7  * * *
   ...
   30 * * *
8.8.8.8 gives similar (indeed identical if I've good eye-diff skills) output.
Thanks, I found a TT LG in the meantime.

Interestingly enough, it throws an error ("Please enter a valid IPv4/IPv6 address!") when I ask it for the routes it has for 8.8.4.0/24 or 8.8.8.0/24. If I ask for 8.8.33.0/24 (the "closest" subnet I see in my own BGP tables), it responds normally.

It'd be easier for them to announce the /32, I'd think.
Right, I'm sure they are (they pretty much have to, unless they want to make it harder on themselves)... there's no reason they'd need to filter the /24s out, unless they're afraid that maybe Google would start using other IPs in the same /24 to help the Turks bypass it or something.