If the router maintains its own database it must be fairly easy to have an option in the router to enter an IP and query the IP. I might put in a feature request to Draytek.

I just wanted to update that support have come back and told me that Draytek use the Geolite2 Database from Maxmind to update the country objects in firmware. These are hard coded in the firmware rather than live lookups so are sometimes out of date.

Hopefully this is useful for someone in the future.