<h1 id="ref" data-line="0" class="code-line">
<a class="header-anchor-link" href="#ref" aria-hidden="true"></a> Ref</h1>
<ul data-line="1" class="code-line">
<li data-line="1" class="code-line"><a href="https://aws.amazon.com/jp/route53/what-is-dns/" target="_blank" rel="nofollow noopener noreferrer">https://aws.amazon.com/jp/route53/what-is-dns/</a></li>
<li data-line="2" class="code-line"><a href="https://www.supportpro.com/blog/load-balancing-via-round-robin-dns/" target="_blank" rel="nofollow noopener noreferrer">https://www.supportpro.com/blog/load-balancing-via-round-robin-dns/</a></li>
</ul>
