For more than 25 years Nominet has run one of the largest internet registries in the world. Utilising its heritage in the Domain Name System (DNS) it developed the cyber division and Nominet Protective DNS. Nominet delivers the Protective Domain Name Service (PDNS) on behalf of the National Cyber Security Centre (NCSC) in the UK. It protects an estimated 6 million end users and more than 900 organisations, in addition to the Health and Social Care Network (HSCN) which was brought under the protection of PDNS during the pandemic. Nominet Cyber now delivers its Protective DNS to protect public services across the world.