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<p class="MsoNormal"><span style="color:#1F497D">Abdulhadi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Honestly, I think that a design spec of getting DNS responses in 3ms across the board is unrealistic.  My initial MX query for litc.ly took 367ms:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">;; ADDITIONAL SECTION:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">exmail.litc.ly.         14400   IN      A       197.215.159.227<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">dns2.lttnet.net.        21600   IN      A       62.240.36.40<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">dns3.lttnet.net.        21600   IN      A       62.240.36.40<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">;; Query time: 367 msec<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">;; SERVER: 127.0.0.1#53(127.0.0.1)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">;; WHEN: Sun Jul  9 12:50:58 2017<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">;; MSG SIZE  rcvd: 144<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Additionally, given the operational environment in which you exist I would recommend that you strive for just providing good DNS services in general.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Good luck.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">John<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> bind-users [mailto:bind-users-bounces@lists.isc.org]
<b>On Behalf Of </b>Abdulhadi Ettwejiri<br>
<b>Sent:</b> Sunday, July 09, 2017 2:32 AM<br>
<b>To:</b> bind-users@lists.isc.org<br>
<b>Subject:</b> designing the DNS from the scratch<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#2F5496">HI,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#2F5496"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#2F5496">we are ISP company , we are providing Internet to our customer, Recently one of our VIP customer ask for DNS service, and need the response time 3msec, we don't have enough knowledge of DNS,
<o:p></o:p></span></p>
<h3 style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:#2F5496;font-weight:normal"><o:p> </o:p></span></h3>
<h3 style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt;text-indent:-.25in;mso-list:l0 level1 lfo2;background:white">
<![if !supportLists]><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#2F5496;font-weight:normal"><span style="mso-list:Ignore">1-<span style="font:7.0pt "Times New Roman"">   
</span></span></span><![endif]><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:#2F5496;font-weight:normal">To achieve the goal of my customer about the response time I need to know what’s the optimal design solution for DNS ( Authoritative
 or Recursive</span><span dir="RTL"></span><span dir="RTL"></span><span lang="AR-SA" dir="RTL" style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#2F5496;font-weight:normal"><span dir="RTL"></span><span dir="RTL"></span>(</span><span dir="LTR"></span><span dir="LTR"></span><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;color:#2F5496;font-weight:normal"><span dir="LTR"></span><span dir="LTR"></span>,or
 there is other design.</span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#2F5496;font-weight:normal"><o:p></o:p></span></h3>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#2F5496"><span style="mso-list:Ignore">2-<span style="font:7.0pt "Times New Roman"">     
</span></span></span><![endif]><span style="font-size:12.0pt;color:#2F5496">If the answer in the previous question an “authoritative”, is there any registration & technical requirements for so (i.e. ccTLD, …   )</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#2F5496"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="AR-SA" dir="RTL" style="font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="background:white"><i><span style="font-size:14.0pt;font-family:"Times New Roman",serif;color:#1F497D">Best regards</span></i><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><i><span style="font-size:14.0pt;font-family:"Times New Roman",serif;color:#1F497D">Abdulhadi Ettwejiri<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span style="font-family:"Times New Roman",serif;color:#1F497D">Technical Support Department<o:p></o:p></span></i></p>
<p class="MsoNormal"><b><span style="font-size:8.0pt;color:#215868"><img width="378" height="65" id="Picture_x0020_1" src="cid:image001.jpg@01D2F8B2.CF6BC7A0" alt="Description: LITC-Logo03"></span></b><o:p></o:p></p>
<p class="MsoNormal"><b><span lang="EN-GB" style="font-size:8.0pt;color:#215868">Zawia Street inside GPTC building      | Tripoli | Libya |
</span></b><o:p></o:p></p>
<p class="MsoNormal" align="right" dir="RTL" style="text-align:left;background:white;direction:rtl;unicode-bidi:embed">
<b><span lang="EN-GB" dir="LTR" style="font-size:8.0pt;font-family:Wingdings;color:#215868">)</span></b><b><span lang="EN-GB" dir="LTR" style="font-size:8.0pt;color:#215868">  + 218 91 9994265 
</span></b><span lang="EN-GB" dir="LTR" style="font-size:8.0pt;color:#215868">                 
</span><b><span lang="EN-GB" dir="LTR" style="font-size:8.0pt;font-family:Wingdings;color:#215868">*</span></b><b><span lang="EN-GB" dir="LTR" style="font-size:8.0pt;color:#215868">
</span></b><u><span dir="LTR" style="font-size:8.0pt;color:#215868"><a href="mailto:Abdulhadi.ettwejiri@litc.ly">Abdulhadi.ettwejiri@litc.ly</a></span></u><b><u><span dir="LTR" style="color:#215868"><br>
</span></u></b><b><span lang="EN-GB" dir="LTR" style="font-size:8.0pt;font-family:Wingdings;color:#215868">(</span></b><b><span lang="EN-GB" dir="LTR" style="font-size:8.0pt;color:#215868"> + 218 21 3600234               
</span></b><span lang="EN-GB" dir="LTR" style="font-size:8.0pt;color:#215868">   </span><span lang="EN-GB" dir="LTR" style="font-size:8.0pt;color:#1F497D">  </span><b><span lang="EN-GB" dir="LTR" style="font-size:8.0pt;font-family:Wingdings;color:#215868">:</span></b><b><span lang="EN-GB" dir="LTR" style="font-size:8.0pt;color:#215868">
  </span></b><span dir="LTR" style="font-family:"Times New Roman",serif"><a href="http://www.litc.ly/"><b><span lang="EN-GB" style="font-size:8.0pt;font-family:"Calibri",sans-serif;color:#215868">http://www.litc.ly</span></b></a></span><span dir="LTR"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-GB" style="font-size:8.0pt;font-family:"Wingdings 2";color:#215868">7</span></b><b><span lang="EN-GB" style="font-size:8.0pt;color:#215868"> + 218 21 3617777</span></b><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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