locations of Google Public DNS servers

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Sep 10, 2010, 7:31:38 AM9/10/10

to public-dns-announce

For those of you doing geolocation based on resolver addresses, here
are the addresses from which Google Public DNS sends requests to
authoritative nameservers, and their associated IATA airport codes:

64.233.162.0/24 gru
64.233.168.0/24 iad
64.233.180.0/24 kul
72.14.202.0/24 tpe
74.125.126.0/24 dls
74.125.152.0/24 tpe
74.125.154.0/24 dls
74.125.38.0/24 fra
74.125.42.0/24 ber
74.125.44.0/24 atl
74.125.46.0/24 atl
74.125.52.0/24 dls
74.125.76.0/24 grq
74.125.78.0/24 grq
74.125.86.0/24 bud
74.125.90.0/24 mrn
74.125.92.0/24 mrn
74.125.94.0/24 cbf
209.85.224.0/24 cbf
209.85.226.0/24 bru
209.85.228.0/24 bru

These are entirely unrelated to the anycast addresses (8.8.8.8 and
8.8.4.4) end users should employ to use Google Public DNS.

This list is subject to additions, modifications, and even reductions
as we continue to deploy and support our service.

Hope this helps. --PSRC (software engineer, Google Public DNS)

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