| 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 |
| Ecole Nationale Supérieure des Télécommucations et des Technologies de l'information et de la Communication, ORAN | Academia | Academia | Academia | UNIVERS,RSRCH |
| ARGENTINA |
| Universidad de Buenos Aires Facultad de Ingeniería, BUENOS AIRES | Academia | Academia | Academia | UNIVERS,RSRCH |
| Universidad Nacional de Córdoba, Córdoba | Academia | Academia | Academia | UNIVERS,RSRCH |
| Universidad Nacional de La Plata, Buenos Aires La Plata | Academia | Academia | Academia | UNIVERS,RSRCH |
| Universidad Tecnológica Nacional, Ciudad Autónoma de Buenos Aires | Academia | Academia | Academia | UNIVERS,RSRCH |
| AUSTRALIA |
| Monash Data Futures Institute Monash University, Clayton | Academia | Academia | Academia | UNIVERS,RSRCH |
| NBN Corporation Limited, Doclands | | X | | ROA |
| RMIT University, MELBOURNE | Academia | Academia | Academia | UNIVERS,RSRCH |
| Symbio Holdings Limited, Sydney | | ASSOCIATE SG2 | | ROA |
| Telstra Limited, MELBOURNE | X | X | | ROA / OPERATOR |
| AUSTRIA |
| A1 Telekom Austria AG, WIEN | X | X | X | ROA / OPERATOR |
| European Space Policy Institute (ESPI), Vienna | Academia | Academia | Academia | UNIVERS,RSRCH |
| BAHRAIN |
| American University of Bahrain, Riffa | Academia | Academia | Academia | UNIVERS,RSRCH |
| Bahrain Network (BNET), Hamala | | X | | ROA / OPERATOR |
| University College of Bahrain, MANAMA | Academia | Academia | Academia | UNIVERS,RSRCH |
| BANGLADESH |
| Bangladesh University of Professionals (BUP), Mirpur, Dhaka | Academia | Academia | Academia | UNIVERS,RSRCH |
| World University of Bangladesh, DHAKA | Academia | Academia | Academia | UNIVERS,RSRCH |
| BARBADOS |
| The University of the West Indies Cave Hill School of Business Inc., St. Michael | Academia | Academia | Academia | UNIVERS,RSRCH |
| BELGIUM |
| BICS SA/NV, BRUSSELS | | ASSOCIATE SG2 | | ROA / SERVICE PROVIDER |
| Dust Mobile, Brussels | | ASSOCIATE SG17 | | ROA |
| Proximus PLC, EVERE HAACHT | X | X | | ROA |
| BOSNIA AND HERZEGOVINA |
| BH Telecom, SARAJEVO | | X | X | ROA / OPERATOR |
| BRAZIL |
| Associação Data Privacy Brasil de Pesquisa, São Paulo | | ASSOCIATE SG13 | | OTHER ENTITY |
| Datora Mobile Telecomunicações SA, São Paulo – SP | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Fundacao CPqD - Centro de Pesquisa e Desenvolvimento em Telecomunicacoes, CAMPINAS | Academia | Academia | Academia | UNIVERS,RSRCH |
| Idea Electronic Systems, Campinas | | ASSOCIATE SG15 | | SIO |
| Universidade Federal do Para, BELEM, PA | Academia | Academia | Academia | UNIVERS,RSRCH |
| CAMEROON |
| Ecole Nationale Supérieure des Postes, Télécommunications et TIC, Center, Yaoundé | Academia | Academia | Academia | UNIVERS,RSRCH |
| CANADA |
| Alphawave IP Inc., Toronto | | ASSOCIATE SG15 | | OTHER ENTITY |
| Bell Canada, MONTREAL | | X | | ROA / OPERATOR |
| Ciena Canada, OTTAWA | | X | | SIO / MANUFACTURER |
| Corinex Communications Corp., VANCOUVER | | ASSOCIATE SG15 | | SIO |
| Ericsson Canada, Inc., ST. LAURENT | X | X | | SIO |
| EXFO Inc., QUEBEC | | ASSOCIATE SG15 | | SIO |
| InterDigital Canada Ltee, Montreal | | X | | SIO / MANUFACTURER |
| Renesas Electronics Canada Limited, OTTAWA | | ASSOCIATE SG15 | | SIO |
| TELUS Communications Inc., EDMONTON | | X | | ROA |
| Vecima Networks Inc., Victoria | | X | | SIO / MANUFACTURER |
| CHINA |
| AI Speech Co., Ltd., Suzhou | | ASSOCIATE SG16 | | SIO / SERVICE PROVIDER |
| Alibaba China Co. Ltd., HANGZHOU | | X | | SIO |
| Ant Group Co., Ltd., Hangzhou | | X | | SIO / SERVICE PROVIDER |
| Asiainfo Technologies (China), Inc., Beijing | | X | | OTHER ENTITY |
| Beihang University, Beijing | Academia | Academia | Academia | UNIVERS,RSRCH |
| Beijing Baidu Netcom Science Technology Co., Ltd., BEIJING | | X | | ROA |
| Beijing BizSeer Technology Co. Ltd., Beijing | | ASSOCIATE SG13 | | SIO |
| Beijing Guoxin Digital Transformation Technology Research Institute, Beijing | Academia | Academia | Academia | UNIVERS,RSRCH |
| Beijing Institute of Technology, Haidian, Beijing | Academia | Academia | Academia | UNIVERS,RSRCH |
| Beijing Jiaotong University, Beijing | Academia | Academia | Academia | UNIVERS,RSRCH |
| Beijing Qihu Keji Co., Ltd., BEIJING | | X | | SIO |
| Beijing University of Posts and Telecommunications, BEIJING | Academia | Academia | Academia | UNIVERS,RSRCH |
| Beijing Zhongdun Security Technology Group Limited, BEIJING | | ASSOCIATE SG16 | | SIO |
| Big Data Academy, Zhongke, Zhengzhou City | Academia | Academia | Academia | UNIVERS,RSRCH |
| BOE Technology Group Co. Ltd., BEIJING | | ASSOCIATE SG16 | | SIO |
| CAS Quantum Network Co. Ltd., Beijing | | X | | ROA |
| China Branch of BRICS Institute of Future Networks, Shenzhen | Academia | Academia | Academia | UNIVERS,RSRCH |
| China Energy Materials Company Limited, Beijing | | ASSOCIATE SG5 | | OTHER ENTITY |
| China Information Communication Technologies Group, WUHAN | X | X | | SIO |
| China Institute of Communications, Beijing | Academia | Academia | Academia | UNIVERS,RSRCH |
| China Mobile Communications Co. Ltd., BEIJING | X | X | | ROA / MOBILE OPERATOR |
| China Satellite Network Group Co., Ltd, Beijing | X | X | | ROA / OPERATOR |
| China Telecommunications Corporation, BEIJING | X | X | X | ROA |
| China Tower Corporation Limited, HAIDIAN DISTRICT, BEIJING | X | X | X | ROA / OPERATOR |
| China Unicom, BEIJING | X | X | X | ROA |
| China University of Geosciences (Wuhan), Wuhan | Academia | Academia | Academia | UNIVERS,RSRCH |
| Chongqing Changan Automobile Co. Ltd., Chongqing | | X | | SIO |
| Chongqing University of Posts and Telecommunications, CHONGQING | Academia | Academia | Academia | UNIVERS,RSRCH |
| Chongqing University, CHONGQING | Academia | Academia | Academia | UNIVERS,RSRCH |
| Companhia de Telecomunicações de Macau S.A.R.L., MACAU | | ASSOCIATE SG20 | | ROA / OPERATOR |
| Computer Network Information Center of the Chinese Academy of Sciences, BEIJING | Academia | Academia | Academia | UNIVERS,RSRCH |
| Digital Currency Institute of the People's Bank of China, Beijing | Academia | Academia | Academia | UNIVERS,RSRCH |
| E-merge Digital (Beijing) Technology Group Co., Ltd, Xicheng District, BEIJING | | ASSOCIATE SG16 | | OTHER ENTITY |
| Guangdong DAPU Telecom Technology Co. Ltd., DONGGUAN | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Guangdong OPPO Mobile Telecommunications Corp., Ltd., DongGuan City | X | X | | SIO |
| Guodian Nanjing Automation Co., Ltd, Nanjing | | ASSOCIATE SG16 | | SIO / R&D INSTITUTION |
| Hangzhou HarmonyCloud Technology Co., Ltd., Hangzhou | | ASSOCIATE SG16 | | SIO / SERVICE PROVIDER |
| Hangzhou Hikvision Digital Technology Co.,Ltd., Hangzhou | | X | | SIO |
| Hangzhou Qulian Technology Co., Ltd., Hangzhou | | ASSOCIATE SG16 | | ROA / SERVICE PROVIDER |
| Harbin Institute of Technology, Nan Gang District, Harbin | Academia | Academia | Academia | UNIVERS,RSRCH |
| Hengtong Optic-electric Co., Ltd., Suzhou | | X | | SIO |
| Hisense Broadband Multimedia Technologies Co., Ltd., Qingdao | | ASSOCIATE SG15 | | SIO |
| HiSilicon (Shanghai) Technologies CO., Limited, Shanghai | | ASSOCIATE SG15 | | SIO |
| HMN Technologies Co. Ltd., Tianjin | | ASSOCIATE SG15 | | SIO |
| Hong Kong Applied Science and Technology Research Institute, Hong Kong | Academia | Academia | Academia | UNIVERS,RSRCH |
| Huawei Technologies Co., Ltd., SHENZHEN | X | X | X | SIO |
| Huayou Digital Culture Technology Research Institute (Xiamen) Co., Ltd., Xiamen | | ASSOCIATE SG16 | | SIO |
| Huazhong University of Science & Technology, WUHAN | Academia | Academia | Academia | UNIVERS,RSRCH |
| Hubei University, WUHAN | Academia | Academia | Academia | UNIVERS,RSRCH |
| Information Science Academy of China Electronics Technology Group Corporation (ISA CETC), BEIJING | | X | | SIO / R&D INSTITUTION |
| InnoLight Technology (Suzhou) Ltd., Suzhou | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Inspur Communications Technology Co., Ltd., Shandong | | X | | ROA |
| Institute of Acoustics of the Chinese Academy of Sciences, BEIJING | Academia | Academia | Academia | UNIVERS,RSRCH |
| Institute of Computing Technology Chinese Academy of Sciences, BEIJING | Academia | Academia | Academia | UNIVERS,RSRCH |
| Institute of Information Engineering Chinese Academy of Sciences (IIE, CAS), BEIJING | Academia | Academia | Academia | UNIVERS,RSRCH |
| Jiangsu Zhongtian Technology Co.,Ltd., JiangSu | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Jinan Institute of Quantum Technology | | X | | SIO |
| LUSTER LightTech Co., Ltd., BEIJING | | ASSOCIATE SG16 | | SIO / MANUFACTURER |
| Nanjing Research Institute of Next-generation Artificial Intelligence, NANJING | Academia | Academia | Academia | UNIVERS,RSRCH |
| Nanjing University of Posts and Telecommunications, NANJING | Academia | Academia | Academia | UNIVERS,RSRCH |
| New H3C Technologies Co., Ltd., Beijing | | X | | SIO |
| Nokia Shanghai Bell Co. Ltd., SHANGHAI | X | X | | SIO |
| Northwestern Polytechnical University, Xi'an | Academia | Academia | Academia | UNIVERS,RSRCH |
| Onchain Solutions (Shanghai Distributed Technology Co., Ltd.), Shanghai | | ASSOCIATE SG16 | | OTHER ENTITY |
| Peng Cheng Laboratory, Shenzhen | Academia | Academia | Academia | UNIVERS,RSRCH |
| Potin (Beijing) Technology Co.,Ltd, Beijing | | ASSOCIATE SG11 | | SIO / SERVICE PROVIDER |
| Purple Mountain Laboratories, Nanjing | Academia | Academia | Academia | UNIVERS,RSRCH |
| QuantumCTek Co., Ltd., Beijing | | X | | SIO |
| Renmin University of China, Beijing | Academia | Academia | Academia | UNIVERS,RSRCH |
| Sanjiang University, Nanjing | Academia | Academia | Academia | UNIVERS,RSRCH |
| Shandong University, Qingdao | Academia | Academia | Academia | UNIVERS,RSRCH |
| Shanghai Advanced Research Inst, Shanghai | Academia | Academia | Academia | UNIVERS,RSRCH |
| Shanghai Data Exchange Co., Ltd., Shanghai | | ASSOCIATE SG16 | | OTHER ENTITY |
| Shenyang Institute of Automation Chinese Academy of Sciences, SHENYANG | Academia | Academia | Academia | UNIVERS,RSRCH |
| Shenzhen OLYM Information Security Technology Co. Ltd., SHENZHEN | | ASSOCIATE SG17 | | OTHER ENTITY |
| Shenzhen Skyworth Digital Technology Co. Ltd., SHENZHEN | | ASSOCIATE SG9 | | SIO |
| Shenzhen SmartMore Technology Co., Ltd., Shenzhen | | ASSOCIATE SG16 | | SIO |
| Shenzhen Transsion Holdings Co. Limited, Shanghai | | ASSOCIATE SG16 | | SIO / MANUFACTURER |
| Shuangdeng Group Co., Ltd. (Chinashoto), Taizhou | | ASSOCIATE SG5 | | SIO / MANUFACTURER |
| Sichuan Newstrong UHD Video Technology Co.,Ltd., Chengdu | | ASSOCIATE SG16 | | OTHER ENTITY |
| State Grid Beijing Electric Power Research Institute, Beijing | Academia | Academia | Academia | UNIVERS,RSRCH |
| State Grid Corporation of China, Beijing | | X | | OTHER ENTITY |
| State Grid Hubei Electric Power Research Institute, Wuhan | Academia | Academia | Academia | UNIVERS,RSRCH |
| State Grid Information & Telecommunication Group Co., Ltd., Changping District, Beijing | | ASSOCIATE SG2 | | SIO |
| State Grid Jiangsu Electric Power Research Institute, Nanjing | Academia | Academia | Academia | UNIVERS,RSRCH |
| State Grid Zhejiang Electric Power Co., Ltd. Research Institute, Hangzhou | Academia | Academia | Academia | UNIVERS,RSRCH |
| System Engineering Research Institute, Beijing | | ASSOCIATE SG20 | | SIO |
| SZ DJI Technology Co. Ltd., Nanshan District, Shenzhen | | X | | SIO |
| Telematics Industry Application Alliance, Beijing | | ASSOCIATE SG16 | | OTHER ENTITY |
| Tencent Technology (Shenzhen) Company Limited, Shenzhen | | X | | ROA |
| Tongji University, Shanghai | Academia | Academia | Academia | UNIVERS,RSRCH |
| Tourism College of Zhejiang, Hangzhou City | Academia | Academia | Academia | UNIVERS,RSRCH |
| Tsinghua University, BEIJING | Academia | Academia | Academia | UNIVERS,RSRCH |
| University of Electronic Science and Technology of China, Chengdu | Academia | Academia | Academia | UNIVERS,RSRCH |
| University of Science and Technology Beijing, Beijing | Academia | Academia | Academia | UNIVERS,RSRCH |
| VisionVera Information Technology Co. Ltd., Beijing | | ASSOCIATE SG16 | | SIO |
| Vivo Mobile Communication Co., Ltd., Dongguan | | X | | SIO / MANUFACTURER |
| Wuhan Rayton Network Technology Co. Ltd, WUHAN | | ASSOCIATE SG13 | | ROA |
| Wuhan University, Wuhan | Academia | Academia | Academia | UNIVERS,RSRCH |
| Xi'an Jiaotong University, Xi'an | Academia | Academia | Academia | UNIVERS,RSRCH |
| Yangtze Optical Fibre and Cable Joint Stock Limited Company, WUHAN | | ASSOCIATE SG15 | | SIO |
| Zhejiang Dahua Technology Co. Ltd., HANGZHOU | | X | | SIO |
| Zhejiang Lab, Hangzhou | Academia | Academia | Academia | UNIVERS,RSRCH |
| Zhejiang University, HANGZHOU | Academia | Academia | Academia | UNIVERS,RSRCH |
| ZTE Corporation, SHENZHEN, GUANGDONG | X | X | X | SIO |
| COLOMBIA |
| Universidad Distrital Francisco José de Caldas, BOGOTÁ | Academia | Academia | Academia | UNIVERS,RSRCH |
| Universidad Santo Tomás, BOGOTÁ | Academia | Academia | Academia | UNIVERS,RSRCH |
| Universitaria Agustiniana, BOGOTÁ | Academia | Academia | Academia | UNIVERS,RSRCH |
| COSTA RICA |
| Instituto Costarricense de Electricidad (ICE), SAN JOSÉ | X | X | X | ROA / OPERATOR |
| CROATIA |
| Faculty of Maritime Studies, University of Rijeka, Rijeka | Academia | Academia | Academia | UNIVERS,RSRCH |
| University of Zagreb Faculty of Electrical Engineering and Computing, ZAGREB | Academia | Academia | Academia | UNIVERS,RSRCH |
| CUBA |
| Empresa de Telecomunicaciones de Cuba (ETECSA), LA HABANA | X | X | X | ROA |
| CYPRUS |
| MTX Connect Ltd, LIMASSOL | | ASSOCIATE SG2 | | ROA / SERVICE PROVIDER |
| CZECH REPUBLIC |
| CEZ Distribuce, a.s., Děčín | | ASSOCIATE SG15 | | OTHER ENTITY |
| CôTE D'IVOIRE |
| Ecole supérieure africaine des TIC (ESATIC), ABIDJAN 18 | Academia | Academia | Academia | UNIVERS,RSRCH |
| Moov Africa Côte d’Ivoire, ABIDJAN | | X | X | ROA |
| DENMARK |
| GN Audio A/S, BALLERUP | | ASSOCIATE SG12 | | SIO / MANUFACTURER |
| Hottinger Brüel & Kjaer A/S, NAERUM | | ASSOCIATE SG12 | | SIO |
| Maersk Line A/S, Copenhagen | | ASSOCIATE SG2 | | OTHER ENTITY |
| Onomondo ApS, Copenhagen | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Vattenfall Vindkraft A/S, Kolding | | ASSOCIATE SG2 | | ROA |
| DOMINICAN REP. |
| Instituto Tecnológico de Santo Domingo, SANTO DOMINGO | Academia | Academia | Academia | UNIVERS,RSRCH |
| ECUADOR |
| Escuela Politécnica Nacional, QUITO | Academia | Academia | Academia | UNIVERS,RSRCH |
| Radical Alternativas de Avanzada Altradicalavan Cia Ltda, Quito | | ASSOCIATE SG17 | ASSOCIATE SG1 | SIO / SERVICE PROVIDER |
| Universidad de las Américas, PICHINCHA, QUITO | Academia | Academia | Academia | UNIVERS,RSRCH |
| Universidad Técnica del Norte, Ibarra | Academia | Academia | Academia | UNIVERS,RSRCH |
| EGYPT |
| Academy of Scientific Research & Technology, CAIRO | Academia | Academia | Academia | UNIVERS,RSRCH |
| EQUATORIAL GUINEA |
| Guinea Ecuatorial de Telecomunicaciones, Sociedad Anonima, A.P. 494 MALABO | | X | | ROA / OPERATOR |
| ESTONIA |
| Narayana OÜ, Tallinn | | ASSOCIATE SG2 | | ROA |
| Sevana OÜ, Tallinn | | ASSOCIATE SG12 | | OTHER ENTITY |
| FINLAND |
| Nokia Corporation, HELSINKI | X | X | X | SIO |
| FRANCE |
| Afnic, Guyancourt | | X | X | OTHER ENTITY |
| Airnity, Antibes | | ASSOCIATE SG2 | | ROA |
| BJT PARTNERS SAS, Montrouge | | ASSOCIATE SG2 | | SIO |
| Bouygues Telecom, MEUDON LA FORÊT | ASSOCIATE SG5 | ASSOCIATE SG2 | | ROA |
| Enedis, NANTERRE | | ASSOCIATE SG15 | | OTHER ENTITY |
| Fondation B-COM, Cesson-Sevigne | | ASSOCIATE SG13 | | SIO / R&D INSTITUTION |
| FraudBuster, Paris | | ASSOCIATE SG3 | | SIO |
| Halys SAS, Issy Les Moulineaux | | ASSOCIATE SG2 | | SIO |
| InfoVista SAS, LES ULIS | | ASSOCIATE SG12 | | OTHER ENTITY |
| Institut Mines-Télécom, Palaiseau cedex | Academia | Academia | Academia | UNIVERS,RSRCH |
| IRT SystemX, PALAISEAU | Academia | Academia | Academia | UNIVERS,RSRCH |
| Legos, PARIS | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Metanoia Communications Europe, La Valette-du-Var | | ASSOCIATE SG15 | | SIO |
| Office des Postes et Télécommunications de Nouvelle-Calédonie, NOUMEA CEDEX | | X | | ROA / OPERATOR |
| OLEDCOMM, Vélizy-Villacoublay | | ASSOCIATE SG15 | | SIO |
| Orange, PARIS | X | X | X | ROA |
| Planet Network International, LABEGE | | ASSOCIATE SG12 | | SIO |
| SAGEMCOM BROADBAND SAS, RUEIL-MALMAISON CÉDEX | | X | | SIO |
| TRANSATEL, PUTEAUX | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Université de Bordeaux, Talence Cedex | Academia | Academia | Academia | UNIVERS,RSRCH |
| Vantiva Technologies SAS, Paris | | X | | SIO |
| GERMANY |
| 1NCE GmbH, Cologne | | ASSOCIATE SG2 | | ROA |
| AVM Audiovisuelles Marketing und Computersysteme GmbH, BERLIN | | ASSOCIATE SG15 | | ROA / MANUFACTURER |
| Bayernwerk AG, REGENSBURG | | X | | OTHER ENTITY |
| Cerence GmbH, Aachen | | ASSOCIATE SG12 | | OTHER ENTITY |
| DENIC eG, FRANKFURT AM MAIN | | ASSOCIATE SG2 | | OTHER ENTITY |
| Deutsche Telekom AG, Bonn | X | X | | ROA |
| Deutsche Welle, BONN | | X | | ROA |
| EMnify GmbH, BERLIN | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Focus Infocom Ges. F. Informatik u. Telekomm. mbH, Darmstadt | | ASSOCIATE SG12 | | SIO |
| Fraunhofer HHI & IIS, BERLIN | | X | | SIO |
| HEAD Acoustics GmbH, HERZOGENRATH | | ASSOCIATE SG12 | | SIO |
| Heraeus Quarzglas GmbH & Co. KG, HANAU | | ASSOCIATE SG15 | | SIO |
| Huawei Technologies Düsseldorf GmbH, MUNICH | | X | | SIO |
| Ilmenau University of Technology (TU Ilmenau), Ilmenau | Academia | Academia | Academia | UNIVERS,RSRCH |
| Keysight Technologies Deutschland GmbH, BOEBLINGEN | | ASSOCIATE SG15 | | SIO |
| Konrad-Adenauer-Stiftung, Berlin | Academia | Academia | Academia | UNIVERS,RSRCH |
| Meinberg Funkuhren GmbH & Co.KG, BAD PYRMONT | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Narda Safety Test Solutions GmbH, PFULLINGEN | ASSOCIATE SG1 | ASSOCIATE SG5 | | OTHER ENTITY / MANUFACTURER |
| Opticom GmbH, ERLANGEN | | ASSOCIATE SG12 | | SIO |
| Power Plus Communications AG, MANNHEIM | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Robert Bosch GmbH, Stuttgart | X | X | | SIO |
| Rohde & Schwarz GmbH & Co. KG, MÜNCHEN | X | X | X | SIO |
| RWTH Aachen University, AACHEN | Academia | Academia | Academia | UNIVERS,RSRCH |
| SkyFive AG, Taufkirchen | | ASSOCIATE SG2 | | SIO |
| Technische Universität Berlin (TU Berlin), BERLIN | Academia | Academia | Academia | UNIVERS,RSRCH |
| Vodafone GmbH, DÜSSELDORF | | X | | ROA |
| VOLKSWAGEN AG, Wolfsburg | | X | | OTHER ENTITY |
| GHANA |
| Global Voice Group, Accra | | X | | OTHER ENTITY |
| Kwame Nkrumah University of Science and Technology, KUMASI | Academia | Academia | Academia | UNIVERS,RSRCH |
| GREECE |
| Raycap SA, ATHENS | | ASSOCIATE SG5 | | SIO / MANUFACTURER |
| GUATEMALA |
| Universidad Galileo, GUATEMALA | Academia | Academia | Academia | UNIVERS,RSRCH |
| HUNGARY |
| Banktel Kommunikációs Zrt., Budapest | | ASSOCIATE SG2 | | SIO |
| Szechenyi Istvan University, Gyor | Academia | Academia | Academia | UNIVERS,RSRCH |
| INDIA |
| Bharti Airtel Limited, GURGAON | X | X | X | ROA / OPERATOR |
| Centre for Development of Telematics, NEW DELHI | Academia | Academia | Academia | UNIVERS,RSRCH |
| Indian Institute of Management Indore, INDORE | Academia | Academia | Academia | UNIVERS,RSRCH |
| Indian Institute of Management Kashipur, Kashipur, Uttarakhand | Academia | Academia | Academia | UNIVERS,RSRCH |
| Indian Institute of Science, Bangalore | Academia | Academia | Academia | UNIVERS,RSRCH |
| Indian Institute of Technology Hyderabad, Sangareddy, Telangana | Academia | Academia | Academia | UNIVERS,RSRCH |
| Indian Institute of Technology Madras, Chennai | Academia | Academia | Academia | UNIVERS,RSRCH |
| National Law University Delhi, NEW DELHI | Academia | Academia | Academia | UNIVERS,RSRCH |
| Reliance Jio Infocomm Limited, NAVI MUMBAI | X | X | X | ROA |
| Sterlite Technologies Limited, AURANGABAD | | X | | SIO |
| Telecom Centres of Excellence (TCOE) India, NEW DELHI | Academia | Academia | Academia | UNIVERS,RSRCH |
| Telecom Regulatory Authority of India (TRAI), NEW DELHI | X | X | X | OTHER ENTITY / REGULATOR |
| Telecommunications Standards Development Society, India (TSDSI), New Delhi | X | X | | OTHER ENTITY |
| Visvesvaraya National Institute of Technology (VNIT) Nagpur, Nagpur | Academia | Academia | Academia | UNIVERS,RSRCH |
| INDONESIA |
| Mukti Mandiri Lestari, Bekasi | | ASSOCIATE SG5 | | SIO / SERVICE PROVIDER |
| Telkom University, Bandung | Academia | Academia | Academia | UNIVERS,RSRCH |
| IRAN (ISLAMIC REPUBLIC OF) |
| ICT Research Institute, TEHRAN | Academia | Academia | Academia | UNIVERS,RSRCH |
| IoT Academy, Tehran | Academia | Academia | Academia | UNIVERS,RSRCH |
| Iran University of Science & Technology, NARMAK, TEHRAN | Academia | Academia | Academia | UNIVERS,RSRCH |
| Mobile Communication Company of Iran, TEHRAN | X | X | | ROA |
| Tarbiat Modares University, Tehran | Academia | Academia | Academia | UNIVERS,RSRCH |
| Telecommunication Company of Iran (TCI), TEHRAN | | X | X | ROA |
| IRELAND |
| Cubic Telecom Ltd., DUBLIN | | ASSOCIATE SG2 | | ROA |
| DeviceAtlas Ltd., Dublin | | ASSOCIATE SG11 | | ROA |
| DIDWW Ireland Limited, Malahide | | ASSOCIATE SG2 | | ROA |
| Speedchecker Ltd., Dublin | | ASSOCIATE SG12 | | ROA / SERVICE PROVIDER |
| ISRAEL |
| Beezz Communication Sol. Ltd., PETACH TIKVA | | ASSOCIATE SG2 | | ROA / SERVICE PROVIDER |
| RAD Data Communications, Ltd., TEL AVIV | | ASSOCIATE SG15 | | SIO |
| Retym, Tel Aviv | | ASSOCIATE SG15 | | SIO |
| Vaulto Communication Technologies Ltd., Tel Aviv | | ASSOCIATE SG11 | | SIO |
| Webbing, Petah Tikva | | ASSOCIATE SG2 | | SIO |
| ITALY |
| Afinna One Srl, ROME | | ASSOCIATE SG2 | | ROA |
| Consorzio Nazionale Interuniversitario per le Telecomunicazioni CNIT, PARMA | Academia | Academia | Academia | UNIVERS,RSRCH |
| FastWeb S.p.A., MILANO NEXXT | | X | | ROA |
| Fondazione Ugo Bordoni, ROMA | Academia | Academia | Academia | UNIVERS,RSRCH |
| Institute of Communication, Information and Perception Technologies - Scuola Superiore Sant'Anna, PISA | Academia | Academia | Academia | UNIVERS,RSRCH |
| Intermatica S.p.A., ROME | | X | | OTHER ENTITY |
| Politecnico di Milano Dipartimento di Elettronica, Informazion e Biongegneria, Milano | Academia | Academia | Academia | UNIVERS,RSRCH / R&D INSTITUTION |
| Prysmian SpA, MILANO | | X | | SIO |
| SM Optics s.r.l., MILAN | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| STMicroelectronics, AGRATE BRIANZA | | X | | SIO |
| Telecom Italia S.p.A., ROMA | X | X | | ROA |
| Telecom Italia Sparkle S.p.A., ROMA | | ASSOCIATE SG2 | | ROA |
| JAMAICA |
| Digicel Group, KINGSTON | | X | X | ROA |
| JAPAN |
| Advanced Telecommunications Research Institute International, Kyoto | | ASSOCIATE SG17 | | SIO |
| Anritsu Corporation, KANAGAWA | ASSOCIATE SG5 | ASSOCIATE SG15 | | SIO / R&D INSTITUTION |
| CANON Inc., TOKYO | ASSOCIATE SG6 | ASSOCIATE SG16 | | SIO |
| Communication Line Products Association of Japan, TOKYO | | ASSOCIATE SG15 | | SIO |
| Fujitsu Limited, Tokyo | X | X | X | SIO |
| Hitachi, Ltd., Kanagawa-ken | | X | X | SIO |
| Internet Initiative Japan Inc., TOKYO | | ASSOCIATE SG3 | | ROA |
| Japan Advanced Institute of Science and Technology, NOMI | Academia | Academia | Academia | UNIVERS,RSRCH |
| Japan Cable Laboratories, CHUO-KU, TOKYO | | ASSOCIATE SG9 | | SIO |
| Japan Industrial Imaging Association, Tokyo | | ASSOCIATE SG16 | | OTHER ENTITY |
| Kanazawa Institute of Technology, NONOICHI | Academia | Academia | Academia | UNIVERS,RSRCH |
| KDDI Corporation, TOKYO | X | X | X | ROA |
| Keio University, TOKYO | Academia | Academia | Academia | UNIVERS,RSRCH |
| Kyoto University, KYOTO | Academia | Academia | Academia | UNIVERS,RSRCH |
| Mitsubishi Electric Corporation, TOKYO | X | X | ASSOCIATE SG1 | SIO |
| Murata Manufacturing Company Ltd., NAGAOKAKYO-SHI | X | ASSOCIATE SG15 | | 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 Comware Corporation, CHIBA | | X | | SIO |
| NTT DOCOMO, INC., TOKYO | X | X | | ROA |
| Oki Electric Industry Company Ltd. (OKI), TOKYO | X | X | | SIO |
| Panasonic Holdings Corporation, OSAKA | X | X | | SIO |
| Rakuten Mobile, Inc., Tokyo | X | X | | ROA |
| Renesas Electronics Corporation, TOKYO | | ASSOCIATE SG16 | | SIO |
| SEISA University, Yokohama, Kanagawa | Academia | Academia | Academia | UNIVERS,RSRCH |
| Sharp Corporation, CHIBA | X | X | | SIO |
| Shinshu University, Matsumoto | Academia | Academia | Academia | UNIVERS,RSRCH |
| SoftBank Corporation, TOKYO | X | X | X | ROA |
| Sony Group Corporation, TOKYO | X | X | | SIO |
| Sony Network Communications Inc., TOKYO | | X | | ROA / SERVICE PROVIDER |
| Sumitomo Electric Industries, Ltd., OSAKA | | X | | SIO |
| The ITU Association of Japan, TOKYO | X | X | X | SIO |
| The University of Tokyo, TOKYO | Academia | Academia | Academia | UNIVERS,RSRCH |
| Tokyo Institute of Technology, Tokyo | Academia | Academia | Academia | UNIVERS,RSRCH |
| Toshiba Corporation, MINATO-KU, TOKYO | X | X | | SIO |
| Waseda University, TOKYO | Academia | Academia | Academia | UNIVERS,RSRCH |
| JORDAN |
| Arab States Research and Education Network - ASREN, AMMAN | Academia | Academia | Academia | OTHER ENTITY |
| Orange Jordan, AMMAN | | X | X | ROA |
| KAZAKHSTAN |
| Nazarbayev University, ASTANA | Academia | Academia | Academia | UNIVERS,RSRCH |
| Private Institution Kostanay Engineering and Economics University named after M. Dulatov, Kostanay | Academia | Academia | Academia | UNIVERS,RSRCH |
| KENYA |
| African Advanced Level Telecommunications Institute, NAIROBI | Academia | Academia | Academia | UNIVERS,RSRCH |
| Safaricom Limited, NAIROBI | X | X | X | ROA |
| KOREA (REP. OF) |
| Daejeon University, Daejeon | Academia | Academia | Academia | UNIVERS,RSRCH |
| Electronics and Telecommunications Research Institute (ETRI), DAEJEON | X | X | | SIO |
| Hankuk University of Foreign Studies, Gyeonggi-do | Academia | Academia | Academia | UNIVERS,RSRCH |
| Hyundai Mobis Co., Ltd., Seoul | | ASSOCIATE SG12 | | SIO |
| Hyundai Motor Company, GYEONGGI-DO | | X | | OTHER ENTITY |
| Korea Advanced Institute of Science and Technology (KAIST), DAEJEON | Academia | Academia | Academia | UNIVERS,RSRCH |
| Korea Internet & Security Agency (KISA)., SEOUL | | ASSOCIATE SG17 | | ROA |
| Korea University, Sejong | Academia | Academia | Academia | UNIVERS,RSRCH |
| KT Corporation, SEOUL | X | X | | ROA / OPERATOR |
| Kyung Hee University, YONGIN-SI | Academia | Academia | Academia | UNIVERS,RSRCH |
| LG Uplus, SEOUL | X | X | | ROA |
| Samsung Electronics Co., Ltd., SEOUL | X | X | | SIO |
| SK Telecom, SEOUL | X | X | | ROA |
| Soonchunhyang University, CHUNGCHEONGNAM ASAN-SI | Academia | Academia | Academia | UNIVERS,RSRCH |
| Sunchon National University, Jeollanam-do | Academia | Academia | Academia | UNIVERS,RSRCH |
| KUWAIT |
| Mobile Telecommunications Company K.S.C.P., SAFAT | | X | | ROA |
| LESOTHO |
| Econet Telecom Lesotho, MASERU | | X | | ROA |
| LIBYA |
| Libya Postal Telecommunication and Technology Holding Company (LPTIC), TRIPOLI | X | X | | OTHER ENTITY |
| LIECHTENSTEIN |
| Globalmatix AG, Vaduz | | ASSOCIATE SG2 | | SIO |
| LUXEMBOURG |
| OQ Technology, Leudelange | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Vast New Telecom SA, Roeser | | ASSOCIATE SG2 | | SIO |
| MALAYSIA |
| FNS (M) Sdn Bhd, KUALA LUMPUR | | ASSOCIATE SG17 | | SIO / SERVICE PROVIDER |
| Multimedia University, CYBERJAYA | Academia | Academia | Academia | UNIVERS,RSRCH |
| Universiti Teknologi MARA (UiTM), Shah Alam | Academia | Academia | Academia | UNIVERS,RSRCH |
| XOX Com Sdn Bhd, PETALING JAYA | | ASSOCIATE SG3 | | ROA |
| MEXICO |
| América Móvil, S.A.B. de C.V., CIUDAD DE MÉXICO | X | X | X | ROA / OPERATOR |
| Center for Technical and Higher Education (CETYS University), Mexicali | Academia | Academia | Academia | UNIVERS,RSRCH |
| Centro de Investigación Cientifica y de Educación Superior de Ensenada, B.C., MÉXICO D.F. | Academia | Academia | Academia | UNIVERS,RSRCH |
| Centro México Digital, Ciudad de México | Academia | Academia | Academia | UNIVERS,RSRCH |
| EFTS Group, Mexico City | | ASSOCIATE SG12 | | OTHER ENTITY |
| Instituto Politécnico Nacional (IPN), MÉXICO | Academia | Academia | Academia | UNIVERS,RSRCH |
| Mediafon de Mexico, Mexico City | | ASSOCIATE SG11 | X | SIO |
| MONACO |
| Monaco Télécom, MONACO | | ASSOCIATE SG2 | | ROA / OPERATOR |
| MOROCCO |
| Maroc Télécom - Itissalat Al-Maghrib (IAM), RABAT | X | X | X | ROA |
| MOZAMBIQUE |
| KAMALEON, Maputo | | ASSOCIATE SG16 | X | SIO |
| NAURU |
| Nauru Telikom Corporation, Aiwo | | ASSOCIATE SG2 | | SIO / SERVICE PROVIDER |
| NEPAL (REPUBLIC OF) |
| Nepal Telecommunications Authority (NTA), KATHMANDU | X | X | X | OTHER ENTITY / REGULATOR |
| NETHERLANDS (KINGDOM OF THE) |
| Athalos Global Services BV., HOOFDDORP | | ASSOCIATE SG2 | | ROA |
| Centrum Wiskunde & Informatica, AMSTERDAM | Academia | Academia | Academia | UNIVERS,RSRCH |
| iBasis Netherlands B.V., Rotterdam | | ASSOCIATE SG2 | | ROA / SERVICE PROVIDER |
| MessageBird B.V., AMSTERDAM | | ASSOCIATE SG2 | | ROA / SERVICE PROVIDER |
| One Network B.V., SCHIPHOL | | ASSOCIATE SG2 | | SIO / OPERATOR |
| RGTN Wholesale B.V., Maastricht | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Royal KPN N.V., THE HAGUE | X | X | | ROA |
| Signify Netherlands B.V., Eindhoven | | ASSOCIATE SG15 | | SIO |
| TKH Group NV, HAAKSBERGEN | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| NEW ZEALAND |
| Rakon Limited, AUCKLAND | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| NIGERIA |
| University of Nigeria, NSUKKA, ENUGU STATE | Academia | Academia | Academia | UNIVERS,RSRCH |
| NORWAY |
| AeroMobile AS, OSLA | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Augmentcity AS, Alesund | | ASSOCIATE SG20 | | SIO |
| Tampnet AS, Stavanger | | ASSOCIATE SG2 | | ROA |
| OMAN |
| Oman Telecommunications Company (Omantel), RUWI | X | X | X | ROA |
| Oman Telecommunications Regulatory Authority (TRA), RUWI | X | X | X | OTHER ENTITY / REGULATOR |
| PERU |
| INICTEL - UNI, LIMA 41 | Academia | Academia | Academia | UNIVERS,RSRCH |
| Organismo Supervisor de Inversión Privada en Telecomunicaciones (OSIPTEL), LIMA | | X | X | OTHER ENTITY / REGULATOR |
| TRAINING INSTITUTE OF THE LIMA CHAMBER OF COMMERCE, LIMA | Academia | Academia | Academia | UNIVERS,RSRCH |
| PHILIPPINES |
| DITO Telecommunity Corporation, Taguig City | | X | | ROA / OPERATOR |
| Globe Telecom, Inc., Tagulg | | X | | ROA |
| Philippine Long Distance Telephone Co. (PLDT Inc.), MAKATI CITY | | X | | ROA |
| POLAND |
| International Sailing Schools Association (ISSA), WARSAW | Academia | Academia | Academia | OTHER ENTITY |
| National Institute of Telecommunications, WARSAW | Academia | Academia | Academia | UNIVERS,RSRCH |
| 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 |
| NOS Technology SA, Senhora da Hora, Porto | | ASSOCIATE SG15 | | SIO / SERVICE PROVIDER |
| QATAR |
| Qatar University, DOHA | Academia | Academia | Academia | UNIVERS,RSRCH |
| ROMANIA |
| National Institute for Research & Development in Informatics ICI Bucharest, Bucharest | Academia | Academia | Academia | UNIVERS,RSRCH |
| Romanian Maritime Training Centre - CERONAV, CONSTANTA | Academia | Academia | Academia | UNIVERS,RSRCH |
| RUSSIAN FEDERATION |
| MegaFon Open Joint Stock Company, MOSCOW | X | ASSOCIATE SG2 | | ROA |
| Moscow Institute of Physics and Technology (MIPT, Phystech), DOLGOPRUDNY, MOSCOW | Academia | Academia | Academia | UNIVERS,RSRCH |
| OJSC 'Multiregional TransitTelecom', MOSCOW | | X | | ROA |
| Peter the Great St. Petersburg Polytechnic University, SAINT-PETERSBURG | Academia | Academia | Academia | UNIVERS,RSRCH |
| PJSC «Rostelecom», MOSCOW | | X | | ROA / OPERATOR |
| Saint-Petersburg State University of Aerospace Instrumentation, SAINT-PETERSBURG | Academia | Academia | Academia | UNIVERS,RSRCH |
| Svyazcom LLC, Krasnoyarsk | | ASSOCIATE SG11 | | SIO / MANUFACTURER |
| The Bonch-Bruevich Saint-Petersburg State University of Telecommunications, ST. PETERSBURG | Academia | Academia | Academia | UNIVERS,RSRCH |
| RWANDA |
| Carnegie Mellon University Africa, KIGALI | Academia | Academia | Academia | UNIVERS,RSRCH |
| SAUDI ARABIA |
| King Abdullah University of Science and Technology, THUWAL | Academia | Academia | Academia | UNIVERS,RSRCH |
| Mobily Company, RIYADH | X | X | X | ROA / OPERATOR |
| Saudi Telecom, RIYADH | X | X | X | ROA / OPERATOR |
| SENEGAL |
| Société Nationale des Télécommunications du Sénégal (SONATEL), DAKAR | X | X | X | ROA |
| SINGAPORE |
| BBIX Singapore Pte. Ltd., Singapore | | ASSOCIATE SG2 | | ROA |
| Global Esports Federation, Singapore | | X | | OTHER ENTITY |
| Mozark Pte Ltd., Singapore | | ASSOCIATE SG12 | | SIO |
| National University of Singapore, Singapore | Academia | Academia | Academia | UNIVERS,RSRCH |
| SOMALIA |
| Hormuud Telecom Somalia, MOGADISHU | | X | | ROA |
| Somtel, Mogadishu | | X | | ROA / OPERATOR |
| Telesom Company | | X | | ROA / SERVICE PROVIDER |
| SOUTH AFRICA |
| Council for Scientific and Industrial Research (CSIR), Pretoria | Academia | Academia | Academia | UNIVERS,RSRCH |
| MTN Group Management Services (Pty) Ltd., Cresta | X | ASSOCIATE SG2 | X | ROA |
| Mytelnet (Pty) Ltd., Edenburg, Sandton | | ASSOCIATE SG2 | | ROA |
| Telkom SA SOC Ltd., CENTURION | X | X | X | ROA |
| Vodacom SA (Pty) Limited, MIDRAND | X | X | X | ROA |
| SPAIN |
| Case On IT, Madrid | | ASSOCIATE SG12 | | OTHER ENTITY |
| Colegio Oficial de Ingenieros de Telecomunicación (COIT), MADRID | Academia | Academia | Academia | UNIVERS,RSRCH |
| Iberdrola, Madrid | | ASSOCIATE SG15 | | OTHER ENTITY |
| Insikt Intelligence, Barcelona | | ASSOCIATE SG17 | | SIO |
| Satelio IoT Services, S.L, Barcelona | ASSOCIATE SG4 | ASSOCIATE SG2 | | ROA |
| Telefónica S.A., MADRID | X | X | X | ROA |
| TOTHOMweb, Girona | | ASSOCIATE SG16 | | OTHER ENTITY |
| Universidad de Málaga, Malaga | Academia | Academia | Academia | UNIVERS,RSRCH |
| Universidad Del País Vasco, LEIOA | Academia | Academia | Academia | UNIVERS,RSRCH |
| Universitat Autònoma de Barcelona, Bellaterra | Academia | Academia | Academia | UNIVERS,RSRCH |
| Universitat Politècnica de Catalunya, Barcelona | Academia | Academia | Academia | UNIVERS,RSRCH |
| Wavecontrol, S.L., Barcelona | ASSOCIATE SG1 | ASSOCIATE SG5 | | SIO / MANUFACTURER |
| SWEDEN |
| Blekinge Institute of Technology, Karlskrona | Academia | Academia | Academia | UNIVERS,RSRCH |
| Com4 Sweden AB, STOCKHOLM | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Net Insight AB, Solna | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Tele2 Sverige Aktiebolag, Kista | | ASSOCIATE SG2 | | ROA |
| Telefon AB - LM Ericsson, STOCKHOLM | X | X | X | SIO |
| Telenor Connexion AB, SOLNA | | ASSOCIATE SG2 | | SIO |
| Telia Company AB, STOCKHOLM | X | X | | ROA |
| SWITZERLAND |
| Ecole Polytechnique Fédérale de Lausanne, LAUSANNE | Academia | Academia | Academia | UNIVERS,RSRCH / R&D INSTITUTION |
| EU Business School, GENEVA | Academia | Academia | Academia | UNIVERS,RSRCH |
| Fondation Botnar, Basel | | ASSOCIATE SG16 | | OTHER ENTITY |
| HUAWEI Technologies Switzerland AG, Liebefeld | | X | | SIO |
| ID Quantique, Carouge | | ASSOCIATE SG17 | | SIO / MANUFACTURER |
| Phonegroup SA, Lugano | | ASSOCIATE SG2 | | ROA |
| Resilio, Lausanne | | ASSOCIATE SG5 | | SIO / MANUFACTURER |
| SEMTECH (International) AG, Rapperswil | | X | | SIO |
| SITA Switzerland Sàrl, COINTRIN | | ASSOCIATE SG2 | | ROA |
| Sparrow Analytics SA, Nyon | | ASSOCIATE SG20 | | SIO |
| Swisscom SA, BERNE | X | X | X | ROA |
| Telecom26 AG, ZUG | | ASSOCIATE SG2 | | ROA / SERVICE PROVIDER |
| TuringSign Global SA, Geneva | | ASSOCIATE SG17 | | SIO / SERVICE PROVIDER |
| u-blox AG, THALWIL | | ASSOCIATE SG15 | | SIO |
| Université de Genève, GENÈVE | Academia | Academia | Academia | UNIVERS,RSRCH |
| World's Global Telecom S.A., Lucerne | | X | | SIO / SERVICE PROVIDER |
| SYRIAN ARAB REPUBLIC |
| Syrian Telecom (ST), DAMASCUS | | X | X | ROA / OPERATOR |
| THAILAND |
| Asian Institute of Technology, Pathum Thani | Academia | Academia | Academia | UNIVERS,RSRCH |
| TRINIDAD AND TOBAGO |
| Telecommunications Authority of Trinidad and Tobago (TATT), BARATARIA | X | X | X | OTHER ENTITY / REGULATOR |
| TUNISIA |
| Centre d'Etudes et de Recherches des Télécommunications (CERT), ARIANA | Academia | Academia | Academia | UNIVERS,RSRCH |
| Ecole supérieure privée d'Ingénierie et de Technologies, ARIANA | Academia | Academia | Academia | UNIVERS,RSRCH |
| Innov-Alliance-Tech, BEN AROUS | | ASSOCIATE SG20 | | SIO / R&D INSTITUTION |
| SAMA PARTNERS Business Solutions SARL, Tunis | | ASSOCIATE SG17 | | SIO |
| Tunisie Télécom, TUNIS | | X | X | ROA |
| TüRKIYE |
| Kadir Has University, Istanbul | Academia | Academia | Academia | UNIVERS,RSRCH |
| Turkcell Iletisim Hizmetleri A.S., ISTANBUL | | X | X | ROA / OPERATOR |
| Türk Telekom A.S., ISTANBUL | X | X | X | ROA |
| UKRAINE |
| Institute of Telecommunications and Global Information Space, Kyiv | Academia | Academia | Academia | UNIVERS,RSRCH |
| State University of Telecommunications, KYIV | Academia | Academia | Academia | UNIVERS,RSRCH |
| UNITED ARAB EMIRATES |
| Al Yah Satellite Communications (YahSat), ABU DHABI | X | X | X | ROA |
| Emirates Integrated Telecommunications Company PJSC, DUBAI | X | X | | ROA / OPERATOR |
| Emirates Telecommunication Corporation - Etisalat, DUBAI | X | X | X | ROA |
| Enablers DMCC, Dubai | | ASSOCIATE SG12 | | SIO |
| InMobiles, Dubai | | ASSOCIATE SG11 | | SIO |
| Technology Innovation Institute, Abu Dhabi | ASSOCIATE SG5 | ASSOCIATE SG13 | | SIO |
| Trace Media International FZ-LLC, Dubai | | ASSOCIATE SG13 | | OTHER ENTITY |
| United Arab Emirates University, Al Ain, Abu Dhabi | Academia | Academia | Academia | UNIVERS,RSRCH |
| UNITED KINGDOM |
| 3G Telecommunications Limited, LEEDS | | ASSOCIATE SG2 | | SIO / SERVICE PROVIDER |
| Anglia Ruskin University, CAMBRIDGE | Academia | Academia | Academia | UNIVERS,RSRCH |
| aql (numbering) Ltd., Leeds | | ASSOCIATE SG2 | | ROA |
| ARM Limited, CAMBRIDGE | | ASSOCIATE SG2 | X | ROA / SERVICE PROVIDER |
| Aviat Networks, BLANTYRE, GLASGOW | | ASSOCIATE SG15 | | ROA |
| Bournemouth University, POOLE | Academia | Academia | Academia | UNIVERS,RSRCH |
| Bourns Limited, BEDFORD | | ASSOCIATE SG5 | | SIO |
| British Telecommunications Plc. (BT Plc), LONDON | X | X | | ROA |
| Broadcom Europe Ltd., Reading | | X | | SIO |
| Cable & Wireless Communications Plc, LONDON | | X | | ROA |
| Calnex Solutions plc., LINLITHGOW | | ASSOCIATE SG15 | | SIO / SERVICE PROVIDER |
| Capital City Service Limited, Watford | | ASSOCIATE SG17 | | ROA |
| Chronos Technology Limited, LYDBROOK | | ASSOCIATE SG15 | | SIO |
| Dense Air, Marlow | | ASSOCIATE SG2 | | ROA |
| DNS Research Federation, OXFORD | | ASSOCIATE SG13 | | OTHER ENTITY |
| Eseye Ltd., Guildford | | ASSOCIATE SG2 | | SIO |
| ESim Go Limited, Banbury | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Eutelsat OneWeb, LONDON | | X | | ROA / SERVICE PROVIDER |
| Flo Live Limited, Uckfield | | ASSOCIATE SG2 | | SIO |
| GibFibre Ltd., Gibraltar | | ASSOCIATE SG2 | | SIO / SERVICE PROVIDER |
| iONLINE Internet solutions provider Ltd., Kingsnorth Ashford | | ASSOCIATE SG2 | | SIO / SERVICE PROVIDER |
| JT (Jersey) Limited, ST. HELIER, JERSEY | | ASSOCIATE SG2 | | ROA |
| Littelfuse UK Ltd., SWINDON | | ASSOCIATE SG5 | | SIO |
| Manx Telecom Trading Ltd., BRADDAN, Isle of Man | | ASSOCIATE SG2 | | ROA / SERVICE PROVIDER |
| MediaLincc Limited, DOUGLAS, ISLE OF MAN | | ASSOCIATE SG2 | | SIO |
| Monty UK Global Ltd, London | | ASSOCIATE SG2 | | SIO |
| Netscout, IPSWICH | | X | | SIO |
| NTT Ltd. Group Services Limited, London | | ASSOCIATE SG2 | | SIO / SERVICE PROVIDER |
| OpenSignal Limited, London | | ASSOCIATE SG12 | | ROA |
| Podsystem Ltd., Buckingham | | ASSOCIATE SG2 | | ROA / SERVICE PROVIDER |
| RTFM LLP, GLASGOW | | X | | OTHER ENTITY |
| Sama Telecom Ltd, LONDON | | ASSOCIATE SG2 | | ROA |
| Sawatch Limited, MILTON KEYNES | | ASSOCIATE SG2 | | ROA |
| Senko Advanced Components (Euro) Ltd., Daneshill, Basingstoke | | ASSOCIATE SG15 | | SIO |
| Simwood Group Plc, Bristol | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Sky Group, ISLEWORTH | | ASSOCIATE SG9 | | ROA |
| Stacuity Limited, Ballasalla, Isle of Man | | ASSOCIATE SG2 | | SIO / SERVICE PROVIDER |
| Tata Communications UK Limited, London | | X | | ROA |
| Tyntec Group Ltd, London | | ASSOCIATE SG2 | | ROA |
| University of Bristol, Bristol | Academia | Academia | Academia | UNIVERS,RSRCH |
| University of Glasgow, Glasgow | Academia | Academia | Academia | UNIVERS,RSRCH |
| University of Surrey Institute for Communication Systems(ICS), GUILDFORD | Academia | Academia | Academia | UNIVERS,RSRCH |
| University of the West of Scotland, Paisley | Academia | Academia | Academia | UNIVERS,RSRCH |
| Vodafone Group Services Ltd, NEWBURY | X | X | X | ROA |
| World Mobile Group Ltd., London | | ASSOCIATE SG2 | X | ROA |
| UNITED STATES |
| AB Handshake Corporation, Miami | | ASSOCIATE SG2 | | SIO |
| ADTRAN Holdings Inc., HUNTSVILLE | | X | | SIO |
| Aeris Communications, Inc., SAN JOSE | | ASSOCIATE SG2 | | SIO |
| Aetna, OGDENSBURG | | ASSOCIATE SG17 | | SIO |
| Apple Inc., CUPERTINO | X | X | | SIO |
| AT&T, Inc., ATLANTA | X | X | X | ROA |
| Bandwidth, Inc., RALEIGH | | ASSOCIATE SG2 | | ROA |
| Baylor University, Waco | Academia | Academia | Academia | UNIVERS,RSRCH |
| Beamlink, Inc., Los Angeles | | ASSOCIATE SG2 | | SIO / MANUFACTURER |
| Bloxtel Inc., San Francisco | | ASSOCIATE SG2 | ASSOCIATE SG1 | SIO / SERVICE PROVIDER |
| Broadcom Corporation, Palo Alto | | X | | SIO |
| Calix Networks, Inc., PETALUMA | | ASSOCIATE SG15 | | SIO |
| Ciena Corporation, HANOVER | | ASSOCIATE SG15 | | SIO |
| Cisco Systems, Inc., SAN JOSE | X | X | X | SIO |
| Corning Incorporated, CORNING | | X | | SIO |
| Corporation for National Research Initiatives, RESTON | | ASSOCIATE SG17 | X | SIO |
| Deer Management Systems DBA Tactacam, Caledonia | | ASSOCIATE SG2 | | SIO / SERVICE PROVIDER |
| Dolby Laboratories, SAN FRANCISCO | | X | | SIO |
| DZS Inc., Plano | | ASSOCIATE SG15 | | SIO |
| Epson America Inc., SAN JOSE | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Five 9 Inc., San Ramon | | X | | OTHER ENTITY |
| Frontier Communication, Lewisville, TX | X | X | | SIO / SERVICE PROVIDER |
| Futurewei Technologies Inc., BRIDGEWATER | | ASSOCIATE SG15 | | SIO / R&D INSTITUTION |
| Gallaudet University, WASHINGTON D.C. | Academia | Academia | Academia | UNIVERS,RSRCH |
| George Mason University, FAIRFAX | Academia | Academia | Academia | UNIVERS,RSRCH |
| Globalstar, Inc., MILPITAS | X | X | | ROA |
| Google Fiber, MOUNTAIN VIEW | | ASSOCIATE SG15 | | ROA |
| Google Inc., MOUNTAIN VIEW | X | X | | SIO |
| IBM, POUGHKEEPSIE | | X | | SIO |
| II-VI Incorporated, San Jose | | ASSOCIATE SG15 | | SIO |
| Infinera Corporation, SUNNYVALE | | X | | SIO |
| Intel Corporation, SANTA CLARA | X | X | X | SIO |
| InterDigital Communications, Inc., CONSHOHOCKEN | X | X | | SIO |
| Iridium Satellite LLC., MCLEAN | X | ASSOCIATE SG2 | X | ROA |
| Juniper Networks, SUNNYVALE | | X | | SIO |
| Keysight Technologies, Inc., SANTA ROSA | X | ASSOCIATE SG12 | | SIO / MANUFACTURER |
| KORE Wireless Inc., Alpharetta | | ASSOCIATE SG2 | | SIO |
| Limitless Mobile, LLC, HARRISBURG | | ASSOCIATE SG2 | | SIO |
| Lockheed Martin Corporation (LMC), ARLINGTON | X | X | X | ROA |
| Lumentum, San Jose | | ASSOCIATE SG15 | | SIO |
| Lynk Global, Inc, Falls Church | | ASSOCIATE SG2 | | SIO / SERVICE PROVIDER |
| Marvell Semiconductor, Inc., SANTA CLARA | | ASSOCIATE SG15 | | SIO |
| Maxlinear Inc, CARLSBAD | | X | | SIO |
| Meta Platforms, Inc., MENLO PARK | X | X | X | SIO |
| Microchip Technology Inc., SAN JOSE | | X | | SIO |
| Microsoft Corporation, REDMOND | X | X | X | SIO / MANUFACTURER |
| MITRE, McLean | Academia | Academia | Academia | UNIVERS,RSRCH |
| Mozilla Corporation, San Francisco | | ASSOCIATE SG3 | X | OTHER ENTITY |
| Net Vision Consultants Inc., Stevensville | | ASSOCIATE SG11 | | SIO |
| Netflix Inc., LOS GATOS | | X | X | SIO / SERVICE PROVIDER |
| Nokia USA, MURRAY HILL | | X | | SIO |
| Northeastern University, Boston | Academia | Academia | Academia | UNIVERS,RSRCH |
| OFS Fitel, LLC, SOMERSET | | ASSOCIATE SG15 | | SIO |
| Ookla, SEATTLE | | ASSOCIATE SG12 | | SIO |
| Peraton Labs, RED BANK | | ASSOCIATE SG11 | | OTHER ENTITY / CONSULTANT |
| Qualcomm, Inc., SAN DIEGO | X | X | X | SIO |
| Siemens Industry Software Inc., FREMONT | | ASSOCIATE SG15 | | OTHER ENTITY |
| Silicon Laboratories, Inc., AUSTIN | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Skylo Technologies, Inc., Mountain View | | ASSOCIATE SG2 | | SIO |
| Skyworks Solutions, Inc., Irvine | | ASSOCIATE SG15 | | SIO |
| SomosGov Inc., East Brumwick | | X | | OTHER ENTITY |
| Stanford University, Stanford | Academia | Academia | Academia | UNIVERS,RSRCH |
| Subcom, LLC, EATONTOWN | | ASSOCIATE SG15 | | SIO |
| Syniverse Technologies, LLC, TAMPA | | ASSOCIATE SG2 | | SIO |
| T-Mobile USA, Inc, Bellevue | X | ASSOCIATE SG16 | | ROA |
| Telnyx LLC, Chicago | | ASSOCIATE SG2 | | SIO / SERVICE PROVIDER |
| TEOCO Corporation, Fairfax | | ASSOCIATE SG12 | | SIO |
| TQ Delta, AUSTIN | | ASSOCIATE SG15 | | SIO |
| Twilio Inc., SAN FRANSISCO | | ASSOCIATE SG2 | | SIO |
| University of Hawaii, Honolulu, Hawaii | Academia | Academia | Academia | UNIVERS,RSRCH |
| University of New Hampshire Interoperability Laboratory, DURHAM | Academia | Academia | Academia | UNIVERS,RSRCH |
| University of Pennsylvania, Philadelphia | Academia | Academia | Academia | UNIVERS,RSRCH |
| Verizon Communication Corporation, Basking Ridge | X | X | X | ROA |
| Viasat, Inc., CARLSBAD | X | X | X | ROA |
| WMS, Miramar | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Worldcell Solutions LLC, Alexandria | | ASSOCIATE SG2 | | SIO / SERVICE PROVIDER |
| Xilinx, Inc., SAN JOSE | | ASSOCIATE SG15 | | SIO |
| XPERI, LOS GATOS | ASSOCIATE SG6 | X | | SIO / MANUFACTURER |
| Zenaciti Corporation, Beaverton | | X | | SIO |
| ZAMBIA |
| The University of Zambia School of Natural Sciences, LUSAKA | Academia | Academia | Academia | UNIVERS,RSRCH |
| 588 Sector Members + Associates + Academia (ITU-R=98, ITU-T=184, ITU-D=71, any=196); Academia: 173; Associates: ITU-R=8, ITU-T=231, ITU-D=3, any=233). |
