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<p class="MsoNormal">Thanks Babak and Roy. We reached out to Google DNS directly and they have updated the published IP ranges. We are now in process of working with traffic managers to get their databases updated.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">~Rajesh Maskara<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> Roy Arends [mailto:roy@dnss.ec] <br>
<b>Sent:</b> Thursday, October 19, 2017 9:48 AM<br>
<b>To:</b> Babak Farrokhi <babak@farrokhi.net><br>
<b>Cc:</b> Rajesh Maskara <rajmask@microsoft.com>; dns-operations@dns-oarc.net<br>
<b>Subject:</b> Re: [dns-operations] Unpublished IP addresses for Google Public DNS<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">dig TXT locations.publicdns.goog.<o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal">This will give you all addresses of Google’s public dns unicast backend.<o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal">Warmly<o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal">Roy<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
On 19 Oct 2017, at 16:44, Babak Farrokhi <<a href="mailto:babak@farrokhi.net">babak@farrokhi.net</a>> wrote:<o:p></o:p></p>
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<p>Hi,<o:p></o:p></p>
<p>I have seen several addresses from 172.217.42.x as source address from Google resolvers. Here is a list of IPs I’ve seen recently:<o:p></o:p></p>
<p>172.217.42.3<br>
172.217.42.4<br>
172.217.42.5<br>
172.217.42.6<br>
172.217.42.7<br>
172.217.42.8<br>
172.217.42.9<br>
172.217.42.10<br>
172.217.42.11<br>
172.217.42.14<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p>Kind Regards,<o:p></o:p></p>
<p>-- <br>
Babak Farrokhi<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p>On 12 Oct 2017, at 3:51, Rajesh Maskara wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#777777">Are following two IP addresses used by Google Public DNS for DNS resolution?<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#777777"> 172.217.42.2<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#777777"> 172.217.42.4<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#777777"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#777777">These addresses are NOT included in published ranges:<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<span style="font-size:10.0pt;font-family:"Courier New";color:#777777">C:\>nslookup -type=TXT locations.publicdns.goog. | findstr "172.217."</span><span style="color:#777777"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<span style="font-size:10.0pt;font-family:"Courier New";color:#777777">Non-authoritative answer:</span><span style="color:#777777"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<span style="font-size:10.0pt;font-family:"Courier New";color:#777777"> "172.217.32.0/26 lhr "</span><span style="color:#777777"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<span style="font-size:10.0pt;font-family:"Courier New";color:#777777"> "172.217.32.64/26 lhr "</span><span style="color:#777777"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<span style="font-size:10.0pt;font-family:"Courier New";color:#777777"> </span>
<span lang="ES" style="font-size:10.0pt;font-family:"Courier New";color:#777777">"172.217.32.128/26 sin "</span><span style="color:#777777"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<span lang="ES" style="font-size:10.0pt;font-family:"Courier New";color:#777777"> "172.217.33.0/26 syd "</span><span style="color:#777777"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<span lang="ES" style="font-size:10.0pt;font-family:"Courier New";color:#777777"> "172.217.33.64/26 syd "</span><span style="color:#777777"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<span lang="ES" style="font-size:10.0pt;font-family:"Courier New";color:#777777"> "172.217.33.128/26 fra "</span><span style="color:#777777"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<span lang="ES" style="font-size:10.0pt;font-family:"Courier New";color:#777777"> "172.217.33.192/26 fra "</span><span style="color:#777777"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<span lang="ES" style="font-size:10.0pt;font-family:"Courier New";color:#777777"> "172.217.34.0/26 fra "</span><span style="color:#777777"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<span lang="ES" style="font-size:10.0pt;font-family:"Courier New";color:#777777"> "172.217.34.64/26 bom "</span><span style="color:#777777"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<span lang="ES" style="font-size:10.0pt;font-family:"Courier New";color:#777777"> "172.217.34.192/26 bom "</span><span style="color:#777777"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<span lang="ES" style="font-size:10.0pt;font-family:"Courier New";color:#777777"> "172.217.35.0/24 gru "</span><span style="color:#777777"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<span lang="ES" style="font-size:10.0pt;font-family:"Courier New";color:#777777"> "172.217.36.0/24 atl "</span><span style="color:#777777"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:.5in">
<span lang="ES" style="font-size:10.0pt;font-family:"Courier New";color:#777777">
</span><span style="font-size:10.0pt;font-family:"Courier New";color:#777777">"172.217.37.0/24 gru "</span><span style="color:#777777"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#777777"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#777777">This is resulting in Traffic Managers like DYN etc to map the end-users incorrectly to CA, USA.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#777777"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#777777">Thanks,<br>
Rajesh Maskara<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#777777">Microsoft<o:p></o:p></span></p>
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