| Name | ITU-R | ITU-T | ITU-D | Categories |
| ALGERIA |
| Algérie Télécom SPA, ALGER | X | X | X | ROA / OPERATOR |
| Autorité de Régulation de la Poste et des Communications Electroniques (ARPCE), ALGER | X | X | X | OTHER ENTITY / REGULATOR |
| AUSTRALIA |
| Free TV Australia Ltd., MOSMAN | X | | | SIO |
| SingTel Optus Pty Limited, NORTH RYDE | X | | | ROA |
| Telstra Corporation Ltd., MELBOURNE | X | X | | ROA / OPERATOR |
| AUSTRIA |
| A1 Telekom Austria AG, WIEN | X | X | X | ROA / OPERATOR |
| BAHAMAS |
| Bahamas Telecommunications Company, NASSAU | X | X | X | ROA / SERVICE PROVIDER |
| BANGLADESH |
| Bangladesh Communication Satellite Company Limited (BCSCL), Dhaka | X | X | X | ROA |
| BELGIUM |
| Proximus PLC, EVERE HAACHT | X | X | | ROA |
| BRAZIL |
| Claro S.A., São Paulo | X | | | ROA / OPERATOR |
| BULGARIA |
| BULGARIA SAT, SOFIA | X | | | ROA / OPERATOR |
| CAMBODIA |
| CHUAN WEI (Cambodia) Co., Ltd., PHNOM PENH | X | | X | ROA / SERVICE PROVIDER |
| CANADA |
| Bell Mobility, MISSISSAUGA | X | | | SIO |
| Ericsson Canada, Inc., ST. LAURENT | X | X | | SIO |
| Hydro-Québec, VARENNES | X | | | SIO |
| Telesat Canada, OTTAWA | X | | | ROA / OPERATOR |
| CHINA |
| Asia Satellite Telecommunications Co. Ltd. (AsiaSat), HONG KONG | X | | | ROA |
| China Great Wall Industry Corporation, BEIJING | X | | | SIO / MANUFACTURER |
| China Head Aerospace Technology Co., BEIJING | X | | | SIO |
| China Information Communication Technologies Group, WUHAN | X | X | | SIO |
| China Mobile Communications Corporation, BEIJING | X | X | | ROA / MOBILE OPERATOR |
| China Telecommunications Corporation, BEIJING | X | X | X | ROA |
| China Unicom, BEIJING | X | X | X | ROA |
| Huawei Technologies Co., Ltd., SHENZHEN | X | X | X | SIO |
| Nokia Shanghai Bell Co. Ltd., SHANGHAI | X | X | | SIO |
| Nufront (Beijing) Technology Group Co. Ltd., BEIJING | X | | | OTHER ENTITY |
| ZTE Corporation, SHENZHEN, GUANGDONG | X | X | X | SIO |
| COSTA RICA |
| Instituto Costarricense de Electricidad (ICE), SAN JOSÉ | X | X | X | ROA / OPERATOR |
| CUBA |
| Empresa de Telecomunicaciones de Cuba (ETECSA), LA HABANA | X | X | X | ROA |
| EGYPT |
| The Egyptian Satellite Company (Nilesat), GIZA | X | | | ROA |
| FINLAND |
| Nokia Corporation, HELSINKI | X | X | | SIO |
| FRANCE |
| AIRBUS GROUP, BLAGNAC CEDEX | X | | | SIO |
| ATDI, PARIS | X | | X | SIO |
| Eutelsat S.A., PARIS Cédex 15 | X | | X | ROA |
| Orange, PARIS | X | X | X | ROA |
| Sigfox, LABEGE | X | ASSOCIATE SG20 | | ROA |
| TDF Group, MONTROUGE | X | | | SIO |
| Thales SA, LA DÉFENSE CEDEX | X | | | SIO |
| GERMANY |
| Deutsche Telekom AG, DARMSTADT | X | X | | ROA |
| LS telcom AG, LICHTENAU | X | | X | SIO |
| Norddeutscher Rundfunk (NDR), HAMBURG | X | | | ROA |
| Robert Bosch GmbH, LEONBERG | X | X | | SIO |
| Rohde & Schwarz GmbH & Co. KG, MÜNCHEN | X | X | X | SIO |
| Telefónica Germany GmbH & Co. OHG, MÜNCHEN | X | | | ROA |
| Zweites Deutsches Fernsehen, MAINZ | X | | | ROA |
| GHANA |
| Subah Infosolutions Ghana Limited, Accra | X | X | X | OTHER ENTITY |
| INDIA |
| Bharat Sanchar Nigam Ltd. (BSNL), NEW DELHI | X | X | X | ROA |
| Bharti Airtel Limited, GURGAON | X | X | X | ROA / OPERATOR |
| Reliance Jio Infocomm Limited, NAVI MUMBAI | X | X | X | OTHER ENTITY |
| Telecom Regulatory Authority of India (TRAI), NEW DELHI | X | X | X | OTHER ENTITY / REGULATOR |
| INDONESIA |
| PT Bank Rakyat Indonesia, JAKARTA | X | | | FDI |
| IRAN (ISLAMIC REPUBLIC OF) |
| Telecommunication Company of Iran (TCI), TEHRAN | X | X | X | ROA |
| ITALY |
| RAI - Radiotelevisione Italiana S.p.A., ROMA | X | | | ROA / OPERATOR |
| Rai Way S.p.A., ROMA | X | | | ROA |
| Telecom Italia S.p.A., ROMA | X | X | | ROA |
| Telespazio S.p.A., ROMA | X | X | | ROA |
| Wind Tre S.p.A., ROMA | X | X | | ROA |
| JAPAN |
| Broadcasting Satellite System Corporation (B-SAT), TOKYO | X | | | ROA |
| Denso Corporation, Kariya | X | | | SIO |
| Fujitsu Limited, Tokyo | X | X | X | SIO |
| Japan Aerospace Exploration Agency (JAXA), TOKYO | X | | | SIO |
| Japan Radio Air Navigation Systems Association, TOKYO | X | | | SIO |
| Japan Radio Co. Ltd., TOKYO | X | | | SIO |
| KDDI Corporation, TOKYO | X | X | X | ROA |
| Mitsubishi Electric Corporation, TOKYO | X | X | ASSOCIATE SG1 | SIO |
| National Institute of Information and Communications Technology (NICT), TOKYO | X | X | X | SIO |
| NEC Corporation, TOKYO | X | X | X | SIO |
| Nippon Hoso Kyokai (NHK) (Japan Broadcasting Corporation), TOKYO | X | X | | ROA |
| Nippon Telegraph and Telephone Corporation (NTT), TOKYO | X | X | | SIO |
| NTT Communications Corporation, TOKYO | X | X | | ROA |
| NTT DOCOMO, INC., TOKYO | X | X | | ROA |
| Oki Electric Industry Company Ltd. (OKI), TOKYO | X | X | | SIO |
| Panasonic Corporation, OSAKA | X | X | X | SIO |
| Rakuten Mobile, Inc., Tokyo | X | | | ROA |
| Sharp Corporation, CHIBA | X | X | | SIO |
| SKY Perfect JSAT Corporation, TOKYO | X | | | ROA |
| SoftBank Corporation, TOKYO | X | X | | ROA |
| Sony Corporation, TOKYO | X | X | | SIO |
| The ITU Association of Japan, TOKYO | X | X | X | SIO |
| The Japan Commercial Broadcasters Association, TOKYO | X | | | ROA / BROADCASTING SERVICE |
| Toshiba Corporation, MINATO-KU, TOKYO | X | X | | SIO |
| KENYA |
| Safaricom Limited, NAIROBI | X | X | X | ROA |
| KOREA (REP. OF) |
| Electronics and Telecommunications Research Institute (ETRI), DAEJEON | X | X | | SIO |
| KT Corporation, SEOUL | X | X | X | ROA / OPERATOR |
| LG Electronics, Inc. Advanced Standard R&D Lab., SEOUL | X | | | SIO |
| LG Uplus, SEOUL | X | X | | ROA |
| Samsung Electronics Co., Ltd., SEOUL | X | X | | SIO |
| SK Telecom, SEOUL | X | X | | ROA |
| LEBANON |
| Ogero Telecom, BEIRUT | X | X | X | ROA / OPERATOR |
| Telecommunications Regulatory Authority, BEIRUT | X | X | X | OTHER ENTITY / REGULATOR |
| LIECHTENSTEIN |
| KLEO AG, Vaduz | X | | | ROA |
| LUXEMBOURG |
| Luxembourg Space Telecommunication S.A., LUXEMBOURG | X | | | ROA / SERVICE PROVIDER |
| SES, BETZDORF | X | | | ROA |
| MALAYSIA |
| Celcom Axiata Berhad, KUALA LUMPUR | X | | | ROA |
| MEASAT Satellite Systems Sdn. Bhd., CYBERJAYA | X | | X | ROA |
| MALI |
| Orange Mali SA, BAMAKO | X | X | | ROA / OPERATOR |
| MEXICO |
| América Móvil, S.A.B. de C.V., CIUDAD DE MÉXICO | X | X | X | ROA / OPERATOR |
| Telecomunicaciones de México (TELECOMM), Ciudad de México | X | | X | ROA |
| MOROCCO |
| Maroc Télécom - Itissalat Al-Maghrib (IAM), RABAT | X | X | X | ROA |
| NEPAL (REPUBLIC OF) |
| Nepal Telecommunications Authority (NTA), KATHMANDU | X | X | X | OTHER ENTITY / REGULATOR |
| NETHERLANDS |
| Royal KPN N.V., THE HAGUE | X | X | | ROA |
| SES World Skies, THE HAGUE | X | | X | ROA |
| NEW ZEALAND |
| Spark NZ Limited, WELLINGTON | X | | | ROA |
| NIGERIA |
| Nigerian Communications Satellite Ltd. (NIGCOMSAT), ABUJA | X | | | ROA |
| Pinnacle Communications Limited, ABUJA | X | | | ROA |
| NORWAY |
| Telenor ASA, FORNEBU | X | X | X | ROA |
| OMAN |
| Oman Telecommunications Company (Omantel), RUWI | X | X | X | ROA |
| Oman Telecommunications Regulatory Authority (TRA), RUWI | X | X | X | OTHER ENTITY / REGULATOR |
| Space Communication Technologies LLC, Azaiba | X | | | ROA |
| POLAND |
| Orange Polska S.A., WARSAW | X | X | | ROA |
| Polkomtel Sp. z o.o., WARSAW | X | X | | ROA |
| PORTUGAL |
| MEO - Serviços de Comunicações e Multimédia, S.A., LISBOA | X | X | X | ROA |
| QATAR |
| Ooredoo, DOHA | X | X | X | ROA |
| Qatar Satellite Company, DOHA | X | | | ROA |
| ROMANIA |
| The National Radiocommunication Company S.A., BUCHAREST | X | | | ROA |
| RUSSIAN FEDERATION |
| Joint-Stock Company National Radio Technical Bureau, MOSCOW | X | | | ROA |
| MegaFon Open Joint Stock Company, MOSCOW | X | ASSOCIATE SG2 | | ROA |
| SAUDI ARABIA |
| Mobily Company, RIYADH | X | X | X | ROA / OPERATOR |
| Saudi Telecom, RIYADH | X | X | X | ROA |
| Taqnia Space, RIYADH | X | | | ROA / OPERATOR |
| SENEGAL |
| Société Nationale des Télécommunications du Sénégal (SONATEL), DAKAR | X | X | X | ROA |
| SOUTH AFRICA |
| MTN Group Management Services (Pty) Ltd., Cresta | X | ASSOCIATE SG2 | X | ROA |
| Orbicom (Pty) Ltd., RANDBURG, GAUTENG | X | | | ROA |
| Telkom SA SOC Ltd., CENTURION | X | X | X | ROA |
| Vodacom SA (Pty) Limited, MIDRAND | X | X | X | ROA |
| SPAIN |
| Cellnex Telecom, S.A., BARCELONA | X | | | ROA |
| HISPASAT, S.A., MADRID | X | | | ROA |
| Telefónica S.A., MADRID | X | X | X | ROA |
| SUDAN |
| Sudanese Mobile Telephone Company, Zain, KHARTOUM | X | | X | ROA / OPERATOR |
| SWEDEN |
| Huawei Technologies Sweden AB, KISTA | X | | | SIO |
| SES ASTRA AB, SOLNA | X | | | ROA |
| Telefon AB - LM Ericsson, STOCKHOLM | X | X | X | SIO |
| Telia Company AB, STOCKHOLM | X | X | | ROA |
| Teracom AB, STOCKHOLM | X | | | ROA |
| SWITZERLAND |
| Swisscom SA, BERNE | X | X | X | ROA |
| TRINIDAD AND TOBAGO |
| Telecommunications Authority of Trinidad and Tobago (TATT), BARATARIA | X | X | X | OTHER ENTITY / REGULATOR |
| TURKEY |
| TURKSAT Uydu Haberlesme Kablo TV ve isletme A.S., ANKARA | X | | | ROA |
| Türk Telekom A.S., ISTANBUL | X | X | X | ROA |
| UKRAINE |
| State Enterprise 'Ukrainian State Centre of Radio Frequencies', KYIV | X | | | OTHER ENTITY |
| UNITED ARAB EMIRATES |
| Al Yah Satellite Communications (YahSat), ABU DHABI | X | X | X | ROA |
| Emirates Integrated Telecommunications Company PJSC, DUBAI | X | X | X | ROA |
| Emirates Telecommunication Corporation - Etisalat, DUBAI | X | X | X | ROA |
| UNITED KINGDOM |
| ABS, HAMILTON | X | | | OTHER ENTITY |
| Access Partnership Limited, LONDON | X | | | SIO |
| Airbus Defence and Space Ltd, CORSHAM | X | | | ROA |
| Avanti Communications Group Plc, LONDON | X | | X | ROA / OPERATOR |
| British Broadcasting Corporation (BBC), LONDON | X | | | ROA |
| British Telecommunications Public Ltd. Co. (BT Plc), LONDON | X | X | | ROA |
| Encompass Digital Media Services Limited, London | X | | | ROA |
| Inmarsat Plc., LONDON | X | X | X | ROA |
| Omnispace UK Limited, HIGH WYCOMBE | X | | | SIO |
| OneWeb, LONDON | X | X | X | ROA / SERVICE PROVIDER |
| SES Satellites (Gibraltar) Limited, LONDON | X | | | OTHER ENTITY |
| Vodafone Group Plc., NEWBURY | X | X | X | SIO |
| UNITED STATES |
| ACES Inc., Washington | X | | | OTHER ENTITY |
| Amazon.com Services, Inc., Arlington | X | | | SIO |
| Apple Inc., CUPERTINO | X | X | | SIO |
| AT&T, Inc., ATLANTA | X | X | X | ROA |
| Aviation Spectrum Resources, Inc., ANNAPOLIS | X | | | ROA |
| Cisco Systems, Inc., SAN JOSE | X | X | X | SIO |
| Dish Network, WASHINGTON | X | | | ROA / OPERATOR |
| EchoStar Operating LLC, GERMANTOWN | X | | | SIO |
| Facebook, MENLO PARK | X | | X | SIO |
| Globalstar, Inc., MILPITAS | X | X | | ROA |
| Google Inc., MOUNTAIN VIEW | X | | | SIO |
| Intel Corporation, SANTA CLARA | X | X | X | SIO |
| Intelsat US LLC | X | | X | ROA |
| InterDigital Communications, Inc., CONSHOHOCKEN | X | X | | SIO |
| Iridium Satellite LLC., MCLEAN | X | ASSOCIATE SG2 | X | ROA |
| ITRI International Inc., SAN JOSE | X | X | | SIO |
| Kratos Communications, ALEXANDRIA | X | | | SIO |
| Ligado NETWORKS LLC, RESTON | X | | | SIO |
| Lockheed Martin Corporation (LMC), ARLINGTON | X | X | X | ROA |
| Loon LLC, MOUNTAIN VIEW | X | | X | OTHER ENTITY |
| Microsoft Corporation, REDMOND | X | X | X | SIO |
| Motorola Mobility LLC, CHICAGO | X | | | SIO |
| Motorola Solutions Inc., WASHINGTON | X | | | SIO |
| Qualcomm, Inc., SAN DIEGO | X | X | X | SIO |
| Raytheon Company, WALTHAM | X | | | SIO |
| RKF Engineering Solutions, LLC, Bethesda | X | | | OTHER ENTITY |
| Space Exploration Technologies Corp. (SpaceX), Washington D.C. | X | | X | SIO / MANUFACTURER |
| Sprint Corporation, OVERLAND PARK | X | ASSOCIATE SG16 | | ROA |
| Swarm Technologies, Inc., PALO ALTO | X | | | SIO |
| The Boeing Company, ARLINGTON | X | | | SIO |
| Verizon Communication Corporation, Basking Ridge | X | X | X | ROA |
| Viasat, Inc., CARLSBAD | X | | X | ROA |
| VENEZUELA |
| Compañía Anónima Nacional Teléfonos de Venezuela (CANTV), CARACAS | X | X | X | ROA |
| VIET NAM |
| Viettel Group, HANOI | X | X | X | ROA |
| ZIMBABWE |
| TelOne (Pvt) Limited, HARARE | X | X | X | ROA |
| 189 Sector Members (ITU-R=189, ITU-T=99, ITU-D=79, any=189; Associates: ITU-R=0, ITU-T=5, ITU-D=1, any=6). |
| Name | ITU-R | ITU-T | ITU-D | Categories |
| African Union of Broadcasting, DAKAR | X | X | X | REGINTORG |
| African Union, ADDIS ABABA | X | X | X | REGINTORG |
| Alliance for Telecommunications Industry Solutions, WASHINGTON | X | | | REGINTORG |
| Arab Information and Communication Technology Organization (AICTO), TUNIS | X | X | X | REGINTORG |
| Arab Private Broadcasting Union, QURTOBA | X | X | X | REGINTORG |
| Arab Regulators Network, ALGIERS | X | X | X | REGINTORG |
| Arab States Broadcasting Union, TUNIS | X | | X | REGINTORG |
| ASECNA | X | | | REGINTORG / RADIO SPECTRUM |
| Asia-Pacific Broadcasting Union, KUALA LUMPUR | X | X | X | REGINTORG |
| Asociación de Reguladores Administrador del Foro Latinoamericano de Entes Reguladores de Telecomunicaciones, BOGOTA | X | X | X | REGINTORG |
| Asociación Interamericana de Empresas de Telecomunicaciones, MADRID | X | X | X | REGINTORG |
| Association for Progressive Communications, MELVILLE | X | | X | REGINTORG |
| Association of Andean Community Telecommunications Enterprises, QUITO | X | X | X | REGINTORG |
| Broadcast Networks Europe, BRUXELLES | X | | | REGINTORG |
| Caribbean Broadcasting Union, BRIDGETOWN | X | | X | REGINTORG |
| Committee on Radio Astronomy Frequencies, OXFORD | X | | | REGINTORG |
| Committee on Space Research, PARIS | X | | | REGINTORG |
| Common Market for Eastern and Southern Africa, Lusaka | X | X | X | REGINTORG |
| Commonwealth ITU Group, LONDON | X | X | X | REGINTORG |
| Commonwealth Telecommunications Organisation, LONDON | X | X | X | REGINTORG |
| Communauté économique des Etats de l'Afrique centrale, LIBREVILLE | X | X | X | REGINTORG |
| Cooperation Council for the Arab States of the Gulf, MANAMA | X | X | X | REGINTORG |
| Digital Radio Mondiale, LONDON | X | | X | REGINTORG |
| East African Communications Organization, KIGALI | X | X | X | REGINTORG |
| Ecole Supérieure Multinationale des Télécommunications, DAKAR | X | X | X | REGINTORG |
| Economic Community for West African States, ABUJA | X | X | X | REGINTORG |
| EMEA Satellite Operators Association (ESOA/GSC), BRUSSELS | X | | X | REGINTORG |
| European Broadcasting Union, GRAND-SACONNEX | X | X | X | REGINTORG |
| European Communications Office, COPENHAGEN K | X | X | X | REGINTORG |
| European Competitive Telecommunications Association, BRUSSELS | X | X | X | REGINTORG |
| European Radio Amateurs' Organization, Sabadell | X | | | REGINTORG |
| European Telecommunications Network Operators' Association, BRUSSELS | X | X | X | REGINTORG |
| European Union, BRUSSELS | X | X | X | REGINTORG |
| G3ict - Global Initiative for Inclusive Information and Communication Technologies, ATLANTA | X | X | X | REGINTORG |
| GSMA, LONDON | X | X | X | REGINTORG |
| Institute of Electrical and Electronics Engineers, Inc. (IEEE), Piscataway, NJ | X | X | X | REGINTORG |
| International Air Transport Association, MONTREAL | X | X | X | REGINTORG |
| International Amateur Radio Union, NEWINGTON | X | | X | REGINTORG |
| International Association of Broadcasting, MONTEVIDEO | X | | | REGINTORG |
| International Association of Marine Aids to Navigation and Lighthouse Authorities, ST. GERMAIN EN LAYE | X | | | REGINTORG |
| International Astronautical Federation IAF Secretariat, PARIS | X | | | REGINTORG |
| International Astronomical Union, PARIS | X | | | REGINTORG |
| International Bureau of Weights and Measures, SEVRES CÉDEX | X | | | REGINTORG |
| International Committee of the Red Cross, GENÈVE | X | X | X | REGINTORG |
| International Council for Science, PARIS | X | | | REGINTORG |
| International Council on Large Electric Systems, PARIS | X | | | REGINTORG |
| International Electrotechnical Commission, GENÈVE 20 | X | X | X | REGINTORG |
| International Maritime Radio Association, LONDON | X | X | | REGINTORG |
| International Mobile Satellite Organization (IMSO), LONDON | X | | | REGINTORG |
| International Organization for Standardization, VERNIER, GENEVA | X | X | X | REGINTORG |
| International Special Committee on Radio Interference, YATELEY | X | | | REGINTORG |
| International Telecommunications Satellite Organization, WASHINGTON, DC | X | X | X | REGINTORG |
| International Union of Radio Science, GENT | X | X | X | REGINTORG |
| North American Broadcasters Association (NABA), TORONTO | X | | | REGINTORG |
| Pacific Islands Telecommunications Association, SUVA | X | X | X | REGINTORG |
| Personal Connected Health Alliance, CHICAGO | X | X | X | REGINTORG |
| Phonexia s.r.o., Brno-Královo Pole | X | | | REGINTORG |
| Scientific Committee on Frequency Allocations for Radio Astronomy and Space Science (IUCAF), CHARLOTTESVILLE | X | | | REGINTORG |
| Society of Motion Picture and Television Engineers, WHITE PLAINS | X | | | REGINTORG |
| Southern Africa Telecentre Networks, LUSAKA | X | X | X | REGINTORG |
| Square Kilometre Array Organisation, MACCLESFIELD | X | | | REGINTORG |
| The Asia-Pacific Satellite Communications Council, KYUNGI-DO | X | | | REGINTORG |
| The European Organisation for the Safety of Air Navigation (EUROCONTROL), BRUXELLES | X | | | REGINTORG |
| West Africa Telecommunications Regulators Assembly, ABUJA | X | X | X | REGINTORG |
| World Association of Community Radio Broadcasters, MONTRÉAL | X | | X | REGINTORG |
| World Broadcasting Unions - Technical Committee, TORONTO | X | | | REGINTORG |
| World Forum for Digital Audio Broadcasting, LONDON | X | | | REGINTORG |
| 67 Sector Members (ITU-R=67, ITU-T=36, ITU-D=42, any=67). |
