If you’re maintaining a WordPress site and are interested to use IP address detector widget, there is a simple plugin for that called IPv6 Detector. Thanks to the developer Andres Altamirano. Though he didn’t update it for a long time, yet it works absolutely fine. All you need is to install the plugin and add the widget in the widget area of your website. The original version of the plugin shows some additional information (see an example site here) which might seem to make the widget a little long to display. Hence I’m using a shorter version of it called IPv6 Detector 2 which was updated by Dan York.