

The id is registered to some database where you can look up the info.
If the registry is partnered with europetnet, you can find it here: https://www.europetnet.org/pet-id-search.html
If not you’ll have to figure out where the id was registered and request the info there.

It’s because they’re part of the EBU (not sure why though, the E here also stands for European). I think that’s the actual qualification for entry.