1. Apnic - query the apnic whois database.
http://wq.apnic.net/apnic-bin/whois.pl
2. Digital element.
http://info.digitalelement.com
3. Google maps with my location.
http://www.google.com/mobile/gmm/index.html
4. Hostip.info.
http://www.hostip.info/
5. Ip2location.geolocate ip address location using ip2location.
https://www.ip2location.com/