To be able to register an EU domain,

For companies;
The domain name owner or representative must have an address within European Community.

For individuals,
The individuals must have a physical address within European Community.
These are the European Community:
Aland Islands
Austria
Belgium
Bulgaria
Cyprus
Czech Republic
Denmark
Estonia
Finland
France
French Guiana
Germany
Gibraltar
Greece
Guadeloupe
Hungary
Ireland
Italy
Latvia
Lithuania
Luxembourg
Malta
Martinique
Poland
Portugal
Reunion
Romania
Slovakia
Slovenia
Spain
Sweden
The Netherlands
United Kingdom