Www 是子域吗？

我最近买了 something.com。

当我从浏览器访问 something.com时，我会得到我上传到服务器上的索引页面。但是，如果我访问 www.something.com，它会显示错误404。

所以我创建了一个名为“ www”的子域名，并在那里上传了另一个索引文件。

现在，www.something.com和 something.com显示了两个不同的网站。

我的问题是，‘ www’是一个正常的子域名吗？还是某种特殊的子域？如果是，它与其他子域有什么不同？

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最佳答案

is 'www' a normal sub-domain? Yes, it is. From the point of view of DNSs it is a totally normal subdomain.

is some special kind of sub-domain? Yes, it is, indeed. It is so commonly used that most Registrars and Hosting providers do automatically create it for you and permanently redirect it to the web server hosted with them.

in your case, it seems that this is not what happens. So, create it and permanently redirect it, instead of creating a new index page for it.