The EU publishes a list of all Aircraft operators by country every year so they can 'appropriately' assign global warming taxes across Europe.
https://ec.europa.eu/clima/policies/ets/monitoring/operators_en
List in English (other languages available at first link): https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:32018R0336&from=EN