Since November 2007 her main task has been to organise and support the deployment of the German IPv6 address space that was assigned to the Federal Ministry of the Interior on behalf of Germany’s public administration. She has been running the Local Internet Registry de.government since 2009.
Constanze Bürger is a member of the German IPv6 Council, the Réseaux IP Européens (RIPE) and the Internet Governance Forum (IGF). In 2017 she received the "Jim Bound IPv6 Award" for enabling the operation of its own Local Internet Registry in the context of public administration.