| Argentina |
Secretaria de Comunicaciones |
| Australia |
Australian Communications Authority (ACMA) |
| Austria |
TelekomControl |
| Bahrain |
Telecommunications Regulatory Authority (TRA) |
| Belarus |
Ministry of Posts and Telecommunications |
| Belgium |
Belgian Institute of Postal services and Telecommunications |
| Bolivia |
Superintendencia de Telecomunicaciones (SITTEL) |
| Bosnia and Herzegovina |
The Communication Regulatory Agency (CRA) |
| Botswana |
Botswana Telecommunications Authority |
| Brazil |
ANATEL |
| Brunei |
Jabatan Telekom |
| Bulgaria |
Communication Regulation Commission |
| Burkina Faso |
Direction générale de l'Office National des télécommunications (ONATEL) |
| Canada |
Canadian Radio Television and Telecommunications Commission |
| Chad |
Ministère de Postes et Télécommunications |
| Chile |
Subsecretaria de Telecommunicacaiones (SUBTEL) |
| Columbia |
Comision Regulacion de Telecomunicaciones |
| Czech Republic |
Czech Telecommunications Office |
| Denmark |
National IT & Telecom Agency |
| Dominica |
ECTEL Eastern Caribbean Telecommunications Authority |
| Egypt |
Telecommunications Regulatory Authority (TRA) |
| El Salvador |
Superintendencia General de Electricidad y Telecommunicaciones |
| Estonia |
Ministry of Transport and Communications |
| Finland |
Ministry of Transport and Communications |
| France |
ARCEP (Autorité de Régulation des Communications Electroniques et des Postes ) |
| Georgia |
Georgian National Communications Commission |
| Germany |
The Federal Network Agency |
| Greece |
EETT (National Telecommunications and Post Commission) |
| Grenada |
ECTEL Eastern Caribbean Telecommunications Authority |
| Hong Kong |
Office of the Telecommunications Authority (OFTA) |
| Hungary |
Ministry of Transport, Communication and Water Management |
| Iceland |
Ministry of Communications |
| India |
Telecom Regulatory Authority of India (TRAI) |
| Iran |
Communications Regulatory Authority (CRA) of Iran |
| Ireland |
Office of the Director of Telecommunications Regulation (ODTR) |
| Italy |
Italian Communications Authority |
| Japan |
Ministry of Public Management, Home Affairs, Posts and Telecommunications |
| Jordan |
Telecommunication Regulatory Commission |
| Kenya |
Communications Commission of Kenya |
| Korea |
Ministry of Communications and Informations |
| Latvia |
Latvia Telecommunication State Inspection |
| Lebanon |
Ministry Of Telecommunications |
| Liechtenstien |
Amt für Kommunikation |
| Lithuania |
Lithuanian Communications Regulatory Authority (CRA) |
| Luxembourg |
Institut Luxembourgeois de Régulation |
| Macau |
Office for the Development of Telecommunications and Information Technology |
| Malaysia |
Malaysian Communications and Multimedia Commission (MCMC) |
| Malta |
Malta Communications Authority |
| Mauritius |
The Ministry of Information Technology and Telecommunications |
| Mexico |
Comisión Federal de Telecomunicaciones |
| Morocco |
National Agency for the Regulation of Telecommunications (ANRT) |
| Nepal |
Nepal Telecommunications Authority |
| Netherlands |
OPTA |
| Nigeria |
Nigerian Communications Commission |
| Norway |
Norwegian Post and Telecommunication Authority |
| Pakistan |
Pakistan Telecommunication Authority |
| Papua New Guinea |
PANGTEL |
| Paraguay |
Conatel, Comisión Nacional de Telecomunicaciones |
| Philippines |
National Telecommunications Commission (NTC) |
| Poland |
Office of Telecommunications and Post Regulation (URTiP) |
| Portugal |
Autoridade Nacional de Comunicações (ANACOM) |
| Romania |
National Regulatory Authority for Communications |
| Saint Christopher and Nevis |
ECTEL Eastern Caribbean Telecommunications Authority |
| Saint Lucia |
ECTEL Eastern Caribbean Telecommunications Authority |
| Saint Vincent and the Grenadines |
ECTEL Eastern Caribbean Telecommunications Authority |
| Saudi Arabia |
Communications & Information Technology Commission |
| Singapore |
Infocomm Development Authority of Singapore (IDA) |
| Slovakia |
Telecommunications Office of the Slovak Republic |
| South Africa |
The Independent Communications Authority of South Africa (ICASA) |
| Spain |
Comision del Mercado de las Telecomunicaciones (CMT) |
| Sri Lanka |
Telecommunications Regulatory Commission of Sri Lanka (TRCSL) |
| Sweden |
The National Post and Telecom Agency (PTS) |
| Switzerland |
Federal Office for Communications (OFCOM/BAKOM) |
| Taiwan |
The Directorate General of Telecommunications |
| Turkey |
Telekomunikasyon Kurumu |
| United Arab Emirates |
Telecommunications Regulatory Authority UAE |
| United Kingdom |
UK Office of Communications (OFCOM) |
| USA |
Federal Communications Commission (FCC) |
| Zambia |
The Communications Authority |