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    Hi Hans,<br>
    <br>
    I've just read the message you sent on March 5th.<br>
    <br>
    The targeted servers on our side are not IPv6. We're only seeing the
    following IP as the source of the queries :<br>
    <br>
    <tt>146.112.128.64 r1.compute.cdg1.edc.strln.net.</tt><tt><br>
    </tt><tt>146.112.128.65 r2.compute.cdg1.edc.strln.net.</tt><tt><br>
    </tt><tt>146.112.128.66 r3.compute.cdg1.edc.strln.net.</tt><tt><br>
    </tt><tt>146.112.128.67 r4.compute.cdg1.edc.strln.net.</tt><tt><br>
    </tt><tt>146.112.128.68 r5.compute.cdg1.edc.strln.net.</tt><tt><br>
    </tt><tt>146.112.128.69 r6.compute.cdg1.edc.strln.net.</tt><br>
    <br>
    Our servers are hosted in France and the US, but all the queries we
    receive originate from France.<br>
    <br>
    Compared to you, the reverse zones we host have not been targeted.<br>
    <br>
    Antoine<br>
    <br>
    <div class="moz-cite-prefix">On 07/03/2019 13:22, MAYER Hans wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:149def29f6fe4a749a09205ace7bb9cd@RHONE.iiasa.ac.at">
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        <p class="MsoPlainText"><o:p> </o:p></p>
        <p class="MsoPlainText">Dear Antoine,<o:p></o:p></p>
        <p class="MsoPlainText"><o:p> </o:p></p>
        <p class="MsoPlainText">You are not alone. See my posting from
          March 5th.<o:p></o:p></p>
        <p class="MsoPlainText">If you don't have access to these old
          e-mails here a list I have seen since beginning of this year
          falling into my rate limit. There are primary IPv6 addresses
          and little IPv4.
          <o:p></o:p></p>
        <p class="MsoPlainText"><o:p> </o:p></p>
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            New"">m49.nrt.opendns.com.    2a04:e4c0:20::72<o:p></o:p></span></p>
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            New"">m53.nrt.opendns.com.    2a04:e4c0:20::73<o:p></o:p></span></p>
        <p class="MsoPlainText"><span style="font-family:"Courier
            New"">m80.sjc.opendns.com.    67.215.95.91<o:p></o:p></span></p>
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            New"">m81.sjc.opendns.com.    67.215.95.92<o:p></o:p></span></p>
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            New"">m82.sjc.opendns.com.    67.215.95.93<o:p></o:p></span></p>
        <p class="MsoPlainText"><span style="font-family:"Courier
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        <p class="MsoPlainText"><o:p> </o:p></p>
        <p class="MsoPlainText">// Hans <o:p></o:p></p>
        <p class="MsoPlainText"><o:p> </o:p></p>
        <p class="MsoPlainText"><o:p> </o:p></p>
        <p class="MsoPlainText"><o:p> </o:p></p>
        <p class="MsoPlainText"><o:p> </o:p></p>
        <p class="MsoPlainText">-----Original Message-----<br>
          From: dns-operations
          <a class="moz-txt-link-rfc2396E" href="mailto:dns-operations-bounces@dns-oarc.net"><dns-operations-bounces@dns-oarc.net></a> On Behalf Of
          Antoine JOUBERT<br>
          Sent: Thursday, March 7, 2019 12:17 PM<br>
          To: <a class="moz-txt-link-abbreviated" href="mailto:dns-operations@dns-oarc.net">dns-operations@dns-oarc.net</a><br>
          Subject: [dns-operations] Large amount of queries received
          from OpenDNS</p>
        <p class="MsoPlainText"><o:p> </o:p></p>
        <p class="MsoPlainText">Hi,<o:p></o:p></p>
        <p class="MsoPlainText"><o:p> </o:p></p>
        <p class="MsoPlainText">We've been receiving a large amount of
          queries from OpenDNS over the last month or so.<o:p></o:p></p>
        <p class="MsoPlainText"><o:p> </o:p></p>
        <p class="MsoPlainText">It looks like dictionary-based zone
          enumeration, but each record is requested between 10 and 20
          times.<o:p></o:p></p>
        <p class="MsoPlainText"><o:p> </o:p></p>
        <p class="MsoPlainText">Is anybody else seeing the same behavior
          from OpenDNS's resolvers?<o:p></o:p></p>
        <p class="MsoPlainText"><o:p> </o:p></p>
        <p class="MsoPlainText">I've tried contacting them multiple
          times on their abuse mailbox (<a
            href="mailto:abuse@opendns.com" moz-do-not-send="true"><span
              style="color:windowtext;text-decoration:none">abuse@opendns.com</span></a>),
          but I've not received a reply yet.<o:p></o:p></p>
        <p class="MsoPlainText"><o:p> </o:p></p>
        <p class="MsoPlainText">Could anyone provide me with an
          alternate contact that could look into this issue?<o:p></o:p></p>
        <p class="MsoPlainText"><o:p> </o:p></p>
        <p class="MsoPlainText">Thanks!<o:p></o:p></p>
        <p class="MsoPlainText"><o:p> </o:p></p>
        <p class="MsoPlainText">Antoine<o:p></o:p></p>
        <p class="MsoPlainText">_______________________________________________<o:p></o:p></p>
        <p class="MsoPlainText">dns-operations mailing list<o:p></o:p></p>
        <p class="MsoPlainText"><a
            href="mailto:dns-operations@lists.dns-oarc.net"
            moz-do-not-send="true"><span
              style="color:windowtext;text-decoration:none">dns-operations@lists.dns-oarc.net</span></a><o:p></o:p></p>
        <p class="MsoPlainText"><a
            href="https://lists.dns-oarc.net/mailman/listinfo/dns-operations"
            moz-do-not-send="true"><span
              style="color:windowtext;text-decoration:none">https://lists.dns-oarc.net/mailman/listinfo/dns-operations</span></a><o:p></o:p></p>
        <p class="MsoPlainText">dns-operations mailing list<o:p></o:p></p>
        <p class="MsoPlainText"><a
            href="https://lists.dns-oarc.net/mailman/listinfo/dns-operations"
            moz-do-not-send="true"><span
              style="color:windowtext;text-decoration:none">https://lists.dns-oarc.net/mailman/listinfo/dns-operations</span></a><o:p></o:p></p>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
dns-operations mailing list
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</pre>
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