you don't need to do anything. We will determine the user's IP by default, and look up the country of origin that the RIPE block that IP appears within. This is estimated to be about 90% correct (some people don't update their details correctly or sell their blocks without letting RIPE know). If an IP address is non-routable such as localhost (127.0.0.1) or one of the other blocks for internal use such as 192.168.*.* ,There are a few IP addresses that are reserved for private (non internet-routable) networking such as  10.1.1.1 - 10.255.255.254, 172.16.1.1 - 172.31.255.254, 192.168.1.1 - 192.168.255.254  and of course localhost (127.0.0.1). If your IP shows as one of these (e.g. you're developing on an intranet), we don't select the country.

Cathal