<p>The browser could not find the host server for the provided address.</p><ul><li>Did you make a mistake when typing the domain? (e.g. <q><strong>ww</strong>.mozilla.org</q> instead of <q><strong>www</strong>.mozilla.org</q>)</li><li>Are you certain this domain address exists? Its registration may have expired.</li><li>Are you unable to browse other sites? Check your network connection and DNS server settings.</li><li>Is your computer or network protected by a firewall or proxy? Incorrect settings can interfere with Web browsing.</li></ul>

<p>浏览器无法找到该网址对应的站点。</p><ul><li>域名是否打错了呢？（例如将 <q><strong>www</strong>.mozilla.org</q> 打成 <q><strong>ww</strong>.mozilla.org</q>）</li><li>您确定该域名存在吗？或许该网站的注册已经过期。</li><li>可以访问其他网站吗？若不行，请检查您计算机的网络连接以及 DNS 服务器设置。</li><li>您的计算机或网络是否被防火墙、代理服务器保护呢？请确认这些设置是否正确。</li></ul>