National Telecommunications and Post Authorities

Andorra Servei de Telecomunicaciones d'Andorra
Argentina Comisión Nacional de Comunicaciones
Austria Telecom-Control
Belgium Belgian Institution of Postal Services and Telecommunications (BIPT)
Venezuela Comisión nacional de Telecomunicaciones
Bulgaria Communications Regulation Commission(CRC)
Brazil Agencia Nacional de Telecomunicaçoes (ANATEL)
Βραζιλία Ministry of Communications
France Agence Nationale des Fréquences
France The French Telecommunications Regulatory Authority (ART)
France Ministry of postal services, telecommunications and space
Germany Bundesministerium für Wirtschaft (BMWi)
Germany Regulierungsbehörde für Telekommunikation und Post (RegTP)
 
Denmark Ministry of Research
Denmark National Telecom Agency
Slovak Republic Ministry of Transport, Posts and Telecommunications
Slovak Republic Regulatory Authority
El Salvador Superintendencia General de Electricidad y Telecomunicaciones
Switzerland Federal office for communications (BAKOM-OFCOM-UFCOM)
Estonia Estonian Natioanal Telecommunications Board (SIDEAMET)
United States-Government  
United States-Federal  
United Kingdom Office of Telecommunications (OFTEL) ; (OFTEL's numbering change pages) (Numbering Change website)
United Kingdom
Ireland Department of Transport, Energy and Communications
Ireland Commission for Communications Regulation (ComReg)
Iceland Post and Telecommunication Administration
Spain Comisión del Mercado de las Telecomunicaciones (CMT)
Italy Italian Competition Authority
   
Canada Canadian Radio-television and Telecommunications Commission (CRTC)
Colombia Ministerio de Comunicaciones
Colombia Comisión de Regulación de Telecomunicaciones
Korea Ministry of Information and Communication
Cyprus Office of the Commissioner of Telecommunications and Postal Regulation (OCTPR)
Latvia The Latvia Telecommunication State Inspection
Belarus Ministry of Post and Telecommunications
Lithuania Lithuanian Telecommunication Regulator
Liechtenstein Office for Communications
Luxembourg Institut Luxembourgeois des Télécommunications
   
Malta Malta Communications Authority MCA
Morocco National Regulation Agency
Mexico Comisión Federal de Telecomunicaciones (CFT)
Mexico Secretaria de Comunicaciones y Transportes
Norway Norwegian Post and Telecommunications Authority (PT)
Netherlands Ministry of Transport, Public Works and Water Management, Post and Telecommunications Department (HDTP)
Netherlands The Independent Post and Telecommunications Authority (OPTA)
Honduras Comisión Nacional de Telecomunicaciones
Hungary Communication Authority (HIF)
   
Peru Ministerio de Transportes y Comunicaciones, Viviendas y Construcción
Peru Organismo Supervisor de Inversión Privada en Telecomunicaciones
Poland Office of Telecommunication and Post Regulations (URTIP)
Portugal National Communication Authority (ANACOM)
Romania National Regulatory Authority for Communications(ANRC)
Russian Federation Ministry of Information Technologies and Communications of the Russian Federation
Slovakia Telecommunications Office of the Slavak Republic
Sweden National Post and Telecom Agency (PTS)
Turkey Telecommunications Authority
Czech Czech telecomunications Office (CTO)
Finland Finnish Communications Regulatory Authority (FICORA)
Hong Kong Office of the Telecommunications Authority (OFTA)