From this website you can find only litters from registered members/breeders of Estonian Ferret Union.

All official litters that are registered by Estonian Ferret Union will get registration certificate (pedigree) if ferretry has followed all breeding rules and registered it’s litter in time.

Breeder name can be registrated only by a member of Estonian Ferret Union.

All the kits from official litters are vaccinated, they have micro chip, passport and bedigree.