我知道网上有很多工具可用，但我想在内部工具，写引用或如何去做？甚至是可以做到的，或者是艰巨的任务？

I know there are many online tool available but I want to write in house tool, references or how to go about it? Or even it can be done or is a mammoth task?

推荐答案

您需要有所有IP地址的位置数据库。所以，无论你建立自己（一个真正的mammouth任务）的数据库，或者您使用外部服务。

You need to have a location database of all IP addresses. So, either you build a database yourself (a genuinely mammouth task) or you use an external service.

某些IP定位服务的有有API的，所以你可以调用然后从code。

Some IP location services have have APIs so you can call then from your code.