Ce site est optimisé pour être consulté depuis un navigateur moderne dans lequel JavaScript est activé.

Que signifie « IN » dans un fichier de zone?

ayi

Sometimes a record is listed as <code>www IN A 192.168.1.1</code> and sometimes it is listed as <code>www A 192.168.1.1</code>.
What is the purpose of the IN and when is it required/not required?
<hr>
Source : [](<a href="https://its.victor.se/wiki/chaos-dns" class="inline-onebox" rel="noopener nofollow ugc">chaos-dns [ITS wiki]</a>](<a href="https://its.victor.se/wiki/chaos-dns" class="inline-onebox" rel="noopener nofollow ugc">chaos-dns [ITS wiki]</a>)

ayi_2

That is referring to the DNS class. ‘IN’ refers to ‘Internet’ while the only other option in common use is ‘CH’ for ‘CHAOS’. The CH class is (presently) commonly used for things like querying DNS server versions, while the IN class is the default and generally what “the internet” uses.
References:
<ul>
<li></li>
</ul>
<a href="https://its.victor.se/wiki/chaos-dns">https://its.victor.se/wiki/chaos-dns</a>
<ul>
<li></li>
</ul>
<a href="https://www.rfc-editor.org/rfc/rfc2929#section-3.2">https://www.rfc-editor.org/rfc/rfc2929#section-3.2</a>
<ul>
<li></li>
</ul>
<a href="https://en.wikipedia.org/wiki/Chaosnet">https://en.wikipedia.org/wiki/Chaosnet</a>