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<p class="MsoNormal">“dig +trace <record>” will show the whole path to a given record from root servers down through registrar to the name servers the registrar specifies.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> bind-users <bind-users-bounces@lists.isc.org> <b>
On Behalf Of </b>Leroy Tennison<br>
<b>Sent:</b> Wednesday, January 29, 2020 2:13 PM<br>
<b>To:</b> bind-users@lists.isc.org<br>
<b>Subject:</b> Getting all IP adresses for a domain name<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">I ran into a situation here the IP (v4) address returned for a domain was different from two systems. It turned out that two DNS servers served the domain and were replying with different IP addresses
(discovered by doing whois on the domain followed by dig @<name server> for each name server). This led me to wonder "How would I get all IP addresses if DNS round robin was being used?" I work with external organizations so I can't count on the DNS server
being ISC's. I'm not concerned about multiple servers behind a single IP address (Anycast for instance) because I consider issues related to that to be the destination organization's problem, I'm only concerned with what possible IP addresses could be returned
in response to a query.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Thanks in advance for any information.<o:p></o:p></span></p>
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<p id="c1-id-7"><span style="font-size:1.0pt;font-family:"Arial",sans-serif;color:white">Harriscomputer<o:p></o:p></span></p>
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<p><b id="c1-id-30"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Leroy Tennison<br id="c1-id-32">
</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Network Information/Cyber Security Specialist<br id="c1-id-38">
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif">E: <a href="mailto:leroy@datavoiceint.com">
leroy@datavoiceint.com</a></span><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p></o:p></span></p>
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<p align="center" style="text-align:center"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><br id="c1-id-43">
<img border="0" width="175" height="67" style="width:1.825in;height:.7in" id="_x0000_i1025" src="cid:image001.png@01D5D6B0.97204400"><o:p></o:p></span></p>
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<p align="right" style="text-align:right" id="c1-id-46"><span style="font-size:8.0pt;font-family:"Arial",sans-serif">2220 Bush Dr<br id="c1-id-48">
McKinney, Texas<br id="c1-id-49">
75070<br>
<a href="http://www..com">www.datavoiceint.com</a></span><span style="font-size:12.0pt;font-family:"Arial",sans-serif"> </span><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="display:none"><o:p> </o:p></span></p>
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<p id="c1-id-65"><span style="font-size:7.5pt;font-family:"Arial",sans-serif">This message has been sent on behalf of a company that is part of the Harris Operating Group of Constellation Software Inc.</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p></o:p></span></p>
<p><span style="font-size:7.5pt;font-family:"Arial",sans-serif">If you prefer not to be contacted by Harris Operating Group
<a href="http://subscribe.harriscomputer.com/">please notify us</a>. </span><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p></o:p></span></p>
<p><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> <o:p></o:p></span></p>
<p><span style="font-size:7.5pt;font-family:"Arial",sans-serif">This message is intended exclusively for the individual or entity to which it is addressed. This communication may contain information that is proprietary, privileged or confidential or otherwise
legally exempt from disclosure. If you are not the named addressee, you are not authorized to read, print, retain, copy or disseminate this message or any part of it. If you have received this message in error, please notify the sender immediately by e-mail
and delete all copies of the message.</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p></o:p></span></p>
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<p id="c1-id-74"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> <o:p></o:p></span></p>
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