Some Internet addresses have only tow sub-domains (the minimum). First, it might mean that the organization is so small that it only has one computer on the Internet.

• 某些因特网地址只有两个子域名(最少的)，这里有两个例子：第一种情况是，这意味着该机构规模是如此之小，它在因特网上只有一台计算机。