Administration and management of domain names on the Internet performed by top-level domain name registries with more than 250 000 active domains, or 2. DNS services in the form of (a) an authoritative name server service with more than 25 000 active domain names connected, or (b) a recursive name server service used by more than 100 000 users.

The Swedish Post and Telecom Authority’s regulations on security measures for essential services in the digital infrastructure sector

The regulations contain provisions on security measures for networks and information systems used to provide essential services in the digital infrastructure sector in accordance with §§ 12-14 of the Act (2018:1174) on information security for essential and digital services.