Detect/estimate country of a http-request in ASP.NET

Question

I\'m looking for ways to detect/estimate the country from which a http-request is coming in ASP.NET.
I know there are

Answer 1

If you choose to use the REMOTE_ADDR server variable, you can be fairly certain that the IP that you recover accurately represents the nation of origin of that user. It is fairly uncommon for a user to be accessing the Internet from outside of the country that he is currently in, with a few notable exceptions, such as those who choose to surf though an anonymous proxy server, such as is discussed below. If, however, you want to get the state that a user is coming from, or authenticate the identity of a user, you're out of luck as far as any even remotely reliable method is concerned.

More info here.