此测试将显示IP地址的反向DNS记录，如何找到反向DNS记录（所采用的DNS服务器的路由）。如果没有找到则提供相关联系方式以生成反向DNS记录。

WinMerge is an Open Source differencing and merging tool for Windows. WinMerge can compare both folders and files, presenting differences in a visual text format that is easy to understand and handle.