<html><head></head><body><div dir="auto">NS records in different TLDs gives the zone the advantage of resiliancy against an attack taking an entire TLD down. <br><br></div>
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<div class="gmail_quote" >On Apr 17, 2018, at 07:51, Mariano Absatz - gmail <<a href="mailto:el.baby@gmail.com" target="_blank">el.baby@gmail.com</a>> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div dir="ltr"><br><div class="gmail_extra"><div class="gmail_quote">On 17 April 2018 at 01:23, Yonghua Peng <span dir="ltr"><<a href="mailto:ypeng@gmx.net" target="_blank">ypeng@gmx.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I saw some domains who have auth name servers in different TLDs.<br>
such as,<br>
<br>
;; ANSWER SECTION:<br>
<a href="http://gmx.net" rel="noreferrer" target="_blank">gmx.net</a>. 84558 IN NS <a href="http://ns-gmx.ui-dns.de" rel="noreferrer" target="_blank">ns-gmx.ui-dns.de</a>.<br>
<a href="http://gmx.net" rel="noreferrer" target="_blank">gmx.net</a>. 84558 IN NS <a href="http://ns-gmx.ui-dns.biz" rel="noreferrer" target="_blank">ns-gmx.ui-dns.biz</a>.<br>
<a href="http://gmx.net" rel="noreferrer" target="_blank">gmx.net</a>. 84558 IN NS <a href="http://ns-gmx.ui-dns.com" rel="noreferrer" target="_blank">ns-gmx.ui-dns.com</a>.<br>
<a href="http://gmx.net" rel="noreferrer" target="_blank">gmx.net</a>. 84558 IN NS <a href="http://ns-gmx.ui-dns.org" rel="noreferrer" target="_blank">ns-gmx.ui-dns.org</a>.<br>
<br>
;; ADDITIONAL SECTION:<br>
<a href="http://ns-gmx.ui-dns.biz" rel="noreferrer" target="_blank">ns-gmx.ui-dns.biz</a>. 163883 IN A 217.160.81.199<br>
<a href="http://ns-gmx.ui-dns.com" rel="noreferrer" target="_blank">ns-gmx.ui-dns.com</a>. 258650 IN A 217.160.82.199<br>
<a href="http://ns-gmx.ui-dns.de" rel="noreferrer" target="_blank">ns-gmx.ui-dns.de</a>. 163237 IN A 217.160.80.199<br>
<a href="http://ns-gmx.ui-dns.org" rel="noreferrer" target="_blank">ns-gmx.ui-dns.org</a>. 163744 IN A 217.160.83.199<br>
<br>
And this,<br>
<br>
<a href="http://easydns.com" rel="noreferrer" target="_blank">easydns.com</a>. 600 IN NS <a href="http://dns4.easydns.info" rel="noreferrer" target="_blank">dns4.easydns.info</a>.<br>
<a href="http://easydns.com" rel="noreferrer" target="_blank">easydns.com</a>. 600 IN NS <a href="http://dns1.easydns.com" rel="noreferrer" target="_blank">dns1.easydns.com</a>.<br>
<a href="http://easydns.com" rel="noreferrer" target="_blank">easydns.com</a>. 600 IN NS <a href="http://dns2.easydns.net" rel="noreferrer" target="_blank">dns2.easydns.net</a>.<br>
<a href="http://easydns.com" rel="noreferrer" target="_blank">easydns.com</a>. 600 IN NS <a href="http://dns3.easydns.org" rel="noreferrer" target="_blank">dns3.easydns.org</a>.<br>
<br>
Is this best practices for hosting a domain?<br></blockquote><div><br></div><div>Wouldn't know if "best" practice, but definitively NOT a bad practice.<br><br clear="all"></div><div><div><div class="gmail_signature">--<br>Mariano Absatz - El Baby<br><a href="http://www.clueless.com.ar" target="_blank">www.clueless.com.ar</a><br></div></div><br></div></div></div></div>
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