International Regulatory Authorities
The International Telecommunication Union lists the addresses of regulatory institutions on its web site.
| Australia | Australian Communications and Media Authority (ACMA) |
| Belgium | Belgian Institute for Post and Telecommunications (IBPT) |
| Belgium | Cabinet du Ministre des Télécommunications et des Entreprises et Participations publiques |
| Canada | Canadian Radio-television and Telecommunications Commission (CRTC) |
| Canada | Industry Canada |
| Croatia | Croatian Post and Electronic Communications Agency / Hrvatska Agencija Za Poštu I Elektroničke Komunikacije (HAKOM) |
| Cyprus | Ministry of Communications and Works - Department of Electronic Communications |
| Cyprus | Office of the Commissioner of Electronic Communications and Postal Regulation (OCECPR) |
| Czech Republic | Czech Telecommunication Office (CTU) |
| Denmark | National IT and Telecom Agency (NTA) / Telestyrelsen |
| Denmark | Ministry for Science, Technology and Innovation |
| Estonia | Estonian Technical Surveillance Authority (TJA) |
| Estonia | Estonian Competition Authority (ECA) |
| Finland | Finnish Communication Regulatory Authority (FICORA) |
| France | The French Telecommunications and Posts Regulator (ARCEP) |
| Germany | Federal Network Agency (BNetzA) |
| Germany | Federal Ministry of Economics and Technology (BMWi) |
| Greece | National Telecommunications and Post Commission (EETT) |
| Hungary | National Media and Infocommunications Authority (NMHH) |
| Hungary | Government Commissioner's Office for Infocommunication Technologies (ICT) |
| Iceland | Post- and Telecom Administration (PTA) / Póst- OG Fjarskiptastofnun |
| Ireland | Commission for Communications Regulation (ComReg) |
| Italy | The Communication Regulatory Authority (AGCOM) |
| Japan | Ministry of Internal Affairs and Communications (MIC) |
| Latvia | Ministry of Transport - Communications Department |
| Latvia | Public Utilities Commission (PUC) |
| Latvia | Telecommunications Tariff Council |
| Liechtenstein | The Office for Communications |
| Lithuania | Ministry of Transport and Communications - Department of Communications |
| Lithuania | Communications Regulatory Authority (RRT) |
| Luxembourg | Institut Luxembourgeois de Régulation (ILR) |
| Macedonia | Agency for Electronic Communications (AEC) |
| Malta | Malta Communications Authority (MCA) |
| Malta | Ministry for Infrastructure, Transport & Communications (mitc) |
| Netherlands | Independent Post and Telecommunications Authority (OPTA) |
| Norway | Norwegian Post and Telecommunications Authority / Post- og teletilsynet (NPT) |
| Poland | Office of Communications (UKE) |
| Portugal | ANACOM/Autoridade Nacional de Comunicacoes |
| Republic of Bulgaria | Ministry of Transport, Information Technology and Communications (MTITC) |
| Republic of Bulgaria | Communications Regulation Commission (CRC) |
| Romania | Ministry of Communications and Information Technology (MCSI) |
| Romania | General Direction for Communication Development Strategy |
| Romania | National Authority for Management and Regulation in Communications (ANCOM) |
| Romania | General Direction for Legislation and Licenses in Communication |
| Slovak Republic | Telecommunications Regulatory Authority of the Slovak Republic (TU SR) |
| Slovakia | Ministry of Transport, Posts and Telecommunications of the Slovak Republic (MDPT) |
| Slovenia | Post and Electronic Communications Agency of the Republic of Slovenia |
| Spain | Telecommunications Market Commission (CMT) |
| Sweden | The Swedish Post and Telecom Agency / Post- och telestyrelsen (PTS) |
| Switzerland | Federal Office of Communications (BAKOM) |
| Switzerland | Swiss Federal Communications Commission (ComCom) |
| Turkey | Information and Communication Technologies Authority (BTK) |
| UK | Office of Communications (Ofcom) |
| Ukraine | National Communications Regulation Commission (NCRC) |
| USA | Federal Communications Commission (FCC) |