This is an easy to integrate IP to country Webservice.
Just call http://webservices.akelos.com/ip2country/YOUR_VISITOR_IP where YOUR_VISITOR_IP must be replaced by the visitor ip address.
The response will send an ISO 3166-3 country code, or blank if it cannot be detected.
This webservice uses the database provided by ip-to-country.webhosting.info.
This Webservice should not be used in production sites as whenever this site goes down your application will break. Please contact us to get the source we are using here and remember to cache your visitors results so you don't hit this service twice for the same IP.
Feedback to bermi at this domain.