The article aims to analyze the entities in the domain name registration system in Poland in the light of the provisions of the NIS-2 Directive. The European Union NIS-2 Directive replaces the original network and information systems (NIS Directive) from 2016, to account for the changing character of the digital society and the increased need for improved cybersecurity. Quoting the directive: „The NIS Directive is not sufciently clear when it comes to the scope for operators of essential services and its provisions do not provide sufcient clarity regarding national competence over digital service providers”. The legislation also imposes specific obligations on providers of DNS services in the EU, including registries and registrars, to maintain complete and accurate registration data and share this data in a timely manner to „legitimate access seekers”1. The article attempts to determine the entities involved in the domain name registration system and the mutual correlations.