| Country | Institution |
| Austria |
Federal Ministry of Transport, Innovation and Technology |
| Kingdom of Belgium |
Federal Public Service Mobility and Transport |
| Republic of Bulgaria |
Ministry of Transport |
| Czech Republic |
Ministry of Informatics |
| Republic of Cyprus |
Ministry of Communications and Works |
| Croatia |
Ministry of Science, Education and Sports |
| Denmark |
Ministry of Science, Technology and Innovation |
| Switzerland |
Department of the Environment, Transport, Energy and Communications |
| Estonia |
Ministry of Economic Affairs and Communications |
| Finland |
Ministry of Transport and Communications |
| Republic of Macedonia |
Agency for Electronic Communications |
| Republic of France |
Ministry of Economy, Finance and Industry |
| Georgia |
Ministry of Economic Development |
| Germany |
Federal Ministry of Economics and Technology |
| Greece |
Hellenic Ministry of Transport and Communications |
| Ireland |
Department of Communications, Marine and Natural Resources |
| Iceland |
Ministry of Communications |
| Italy |
Ministry of Communications |
| Latvia |
Secretariat of Special Assignments Minister for Electronic Government Affairs |
| Republic of Lithuania |
Ministry of Transport and Communications |
| Luxemburg |
Ministry of the Economy and Foreign Trade |
| Malta |
Ministry for Investment, Industry and Information Technology |
| Great Britain |
Department of Trade and Industry
The Postal Services Commission |
| Norway |
Ministry of Transport and Communications |
| Netherlands |
Ministry of Economic Affairs |
| Republic of Poland |
Ministry of Interior and Administration |
| Portugal |
Ministry of Science and Technology |
| Romania |
Ministry of Communications and Information Technology |
| Russia |
Ministry for Communications and Informatization |
| Slovak Republic |
Ministry of Transport, Posts and Telecommunications |
| Republic of Slovenia |
Ministry of Higher Education, Science and Technology |
| Spain |
Ministry of Industry, Tourism and Trade |
| Sweden |
Ministry of Industry, Employment and Communications |
| Turkey |
Telecommunications Authority |
| Ukraine |
Ministry of Transport and Communications |
| Hungary |
Ministry of Economy and Transport |