Notes:

Information provided by methodica herger & krasznai,
Correctness, accuracy, and suitability are not guaranteed.

A variant of this page suitable for technical applications can be found here.
Look at the source code, the header only contains the information.
(http://www.methodica.ch/getip.php)

If you want to use it with a dynamic DNS system such as DynDNS look here
(http://www.methodica.ch/getip.php)