ELRO C803IP Plug & Play network camera Quick Installation Guide - Manual (Page 11)

More Security, More Convenience
Q4: How to know the WAN IP of the device.
1. From internet.
If you want to know the WAN IP of your device, please go to
http://www.whatismyip.com . You will find the current WAN IP of your device.
2. From router.
You can also get the WAN IP address from your router.
Q5: How to register a third party DDNS account
For example, you can go to Dyndns website to register a free account.
http://www.dyndns.org / http://www.dyndns.com .
1. Click Sign up FREE.