| Name | ITU-R | ITU-T | ITU-D | Categories |
| ARGENTINA |
| Empresa Argentina de Soluciones Satelitales (AR-SAT S.A.), BUENOS AIRES | ASSOCIATE SG4 | | X | ROA |
| ARMENIA |
| \Telecom Armenia\ Open Joint Stock Company, YEREVAN | | | ASSOCIATE SG2 | ROA / OPERATOR |
| AUSTRALIA |
| Symbio Holdings Limited, Sydney | | ASSOCIATE SG2 | | ROA |
| BANGLADESH |
| Robi Axiata Limited, DHAKA | | | ASSOCIATE SG1 | ROA |
| BELGIUM |
| BICS SA/NV, BRUSSELS | | ASSOCIATE SG2 | | ROA / SERVICE PROVIDER |
| Dust Mobile, Brussels | | ASSOCIATE SG17 | | ROA |
| BRAZIL |
| ADVISIA OC&C Strategy Consultants, SAO PAULO | | | ASSOCIATE SG1 | OTHER ENTITY / CONSULTANT |
| Associação Data Privacy Brasil de Pesquisa, São Paulo | | ASSOCIATE SG13 | | OTHER ENTITY |
| Datora Mobile Telecomunicações SA, São Paulo – SP | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Idea Electronic Systems, Campinas | | ASSOCIATE SG15 | | SIO |
| UTC América Latina, RIO DE JANEIRO | ASSOCIATE SG5 | | | OTHER ENTITY |
| BULGARIA |
| EnduroSat, Sofia | ASSOCIATE SG4 | | | SIO |
| CANADA |
| Alcance Consulting, OTTAWA | ASSOCIATE SG5 | | | OTHER ENTITY / CONSULTANT |
| Alphawave IP Inc., Toronto | | ASSOCIATE SG15 | | OTHER ENTITY |
| Corinex Communications Corp., VANCOUVER | | ASSOCIATE SG15 | | SIO |
| EXFO Inc., QUEBEC | | ASSOCIATE SG15 | | SIO |
| Kepler Communications Inc., Toronto | ASSOCIATE SG4 | | | ROA |
| Renesas Electronics Canada Limited, OTTAWA | | ASSOCIATE SG15 | | SIO |
| CHINA |
| AI Speech Co., Ltd., Suzhou | | ASSOCIATE SG16 | | SIO / SERVICE PROVIDER |
| Beijing BizSeer Technology Co. Ltd., Beijing | | ASSOCIATE SG13 | | SIO |
| Beijing Zhongdun Security Technology Group Limited, BEIJING | | ASSOCIATE SG16 | | SIO |
| BOE Technology Group Co. Ltd., BEIJING | | ASSOCIATE SG16 | | SIO |
| China Energy Materials Company Limited, Beijing | | ASSOCIATE SG5 | | OTHER ENTITY |
| Companhia de Telecomunicações de Macau S.A.R.L., MACAU | | ASSOCIATE SG20 | | ROA / OPERATOR |
| E-merge Digital (Beijing) Technology Group Co., Ltd, Xicheng District, BEIJING | | ASSOCIATE SG16 | | OTHER ENTITY |
| Galaxy Space (Beijing) Technology Co.,Ltd., Beijing | ASSOCIATE SG4 | | | ROA |
| Guangdong DAPU Telecom Technology Co. Ltd., DONGGUAN | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Guodian Nanjing Automation Co., Ltd, Nanjing | | ASSOCIATE SG16 | | SIO / R&D INSTITUTION |
| Hangzhou HarmonyCloud Technology Co., Ltd., Hangzhou | | ASSOCIATE SG16 | | SIO / SERVICE PROVIDER |
| Hangzhou Qulian Technology Co., Ltd., Hangzhou | | ASSOCIATE SG16 | | ROA / SERVICE PROVIDER |
| 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 |
| Huayou Digital Culture Technology Research Institute (Xiamen) Co., Ltd., Xiamen | | ASSOCIATE SG16 | | SIO |
| InnoLight Technology (Suzhou) Ltd., Suzhou | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Jiangsu Zhongtian Technology Co.,Ltd., JiangSu | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| LUSTER LightTech Co., Ltd., BEIJING | | ASSOCIATE SG16 | | SIO / MANUFACTURER |
| Onchain Solutions (Shanghai Distributed Technology Co., Ltd.), Shanghai | | ASSOCIATE SG16 | | OTHER ENTITY |
| Potin (Beijing) Technology Co.,Ltd, Beijing | | ASSOCIATE SG11 | | SIO / SERVICE PROVIDER |
| Shanghai Data Exchange Co., Ltd., Shanghai | | ASSOCIATE SG16 | | OTHER ENTITY |
| Shanghai Spacecom Satellite Technology Ltd., Shanghai | X | | ASSOCIATE SG2 | ROA / OPERATOR |
| 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 Information & Telecommunication Group Co., Ltd., Changping District, Beijing | | ASSOCIATE SG2 | | SIO |
| System Engineering Research Institute, Beijing | | ASSOCIATE SG20 | | SIO |
| Telematics Industry Application Alliance, Beijing | | ASSOCIATE SG16 | | OTHER ENTITY |
| VisionVera Information Technology Co. Ltd., Beijing | | ASSOCIATE SG16 | | SIO |
| Wuhan Rayton Network Technology Co. Ltd, WUHAN | | ASSOCIATE SG13 | | ROA |
| Yangtze Optical Fibre and Cable Joint Stock Limited Company, WUHAN | | ASSOCIATE SG15 | | SIO |
| CYPRUS |
| MTX Connect Ltd, LIMASSOL | | ASSOCIATE SG2 | | ROA / SERVICE PROVIDER |
| CZECH REPUBLIC |
| CEZ Distribuce, a.s., Děčín | | ASSOCIATE SG15 | | OTHER ENTITY |
| DEM. REP. OF THE CONGO |
| Promotion de la Technologie, KINSHASA | | | ASSOCIATE SG2 | OTHER ENTITY |
| 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 |
| ECUADOR |
| Radical Alternativas de Avanzada Altradicalavan Cia Ltda, Quito | | ASSOCIATE SG17 | ASSOCIATE SG1 | SIO / SERVICE PROVIDER |
| ESTONIA |
| Narayana OÜ, Tallinn | | ASSOCIATE SG2 | | ROA |
| Sevana OÜ, Tallinn | | ASSOCIATE SG12 | | OTHER ENTITY |
| FRANCE |
| 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 |
| F24 France SAS, Saint Maur des Fossés | | | ASSOCIATE SG1 | SIO |
| 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 |
| Legos, PARIS | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Metanoia Communications Europe, La Valette-du-Var | | ASSOCIATE SG15 | | SIO |
| OLEDCOMM, Vélizy-Villacoublay | | ASSOCIATE SG15 | | SIO |
| Planet Network International, LABEGE | | ASSOCIATE SG12 | | SIO |
| Stellar Telecommunications, Meudon | ASSOCIATE SG4 | | | SIO / SERVICE PROVIDER |
| TRANSATEL, PUTEAUX | | ASSOCIATE SG2 | | ROA / OPERATOR |
| GERMANY |
| 1NCE GmbH, Cologne | | ASSOCIATE SG2 | | ROA |
| AVM Audiovisuelles Marketing und Computersysteme GmbH, BERLIN | | ASSOCIATE SG15 | | ROA / MANUFACTURER |
| Cerence GmbH, Aachen | | ASSOCIATE SG12 | | OTHER ENTITY |
| DENIC eG, FRANKFURT AM MAIN | | ASSOCIATE SG2 | | OTHER ENTITY |
| EMnify GmbH, BERLIN | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Focus Infocom Ges. F. Informatik u. Telekomm. mbH, Darmstadt | | ASSOCIATE SG12 | | SIO |
| HEAD Acoustics GmbH, HERZOGENRATH | | ASSOCIATE SG12 | | SIO |
| Heraeus Quarzglas GmbH & Co. KG, HANAU | | ASSOCIATE SG15 | | SIO |
| Keysight Technologies Deutschland GmbH, BOEBLINGEN | | ASSOCIATE SG15 | | SIO |
| 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 |
| SkyFive AG, Taufkirchen | | ASSOCIATE SG2 | | SIO |
| GREECE |
| Raycap SA, ATHENS | | ASSOCIATE SG5 | | SIO / MANUFACTURER |
| HUNGARY |
| Banktel Kommunikációs Zrt., Budapest | | ASSOCIATE SG2 | | SIO |
| INDIA |
| Broadband India Forum, New Delhi | | | ASSOCIATE SG2 | OTHER ENTITY |
| Defense Electronics Application Laboratory (DEAL), Dehradun, Uttrakhand | ASSOCIATE SG4 | | | OTHER ENTITY / R&D INSTITUTION |
| Dhruva Space Private Limited, Hyderabad | ASSOCIATE SG4 | | | SIO |
| INDONESIA |
| Mukti Mandiri Lestari, Bekasi | | ASSOCIATE SG5 | | SIO / SERVICE PROVIDER |
| 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 |
| Confindustria Radio Televisioni, Roma | ASSOCIATE SG6 | | | OTHER ENTITY |
| SM Optics s.r.l., MILAN | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Telecom Italia Sparkle S.p.A., ROMA | | ASSOCIATE SG2 | | 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 |
| Internet Initiative Japan Inc., TOKYO | | ASSOCIATE SG3 | | ROA |
| Japan Cable Laboratories, CHUO-KU, TOKYO | | ASSOCIATE SG9 | | SIO |
| Japan Industrial Imaging Association, Tokyo | | ASSOCIATE SG16 | | OTHER ENTITY |
| Mitsubishi Electric Corporation, TOKYO | X | X | ASSOCIATE SG1 | SIO |
| Mitsubishi Research Institute, Inc., TOKYO | ASSOCIATE SG1 | | | SIO |
| Murata Manufacturing Company Ltd., NAGAOKAKYO-SHI | X | ASSOCIATE SG15 | | SIO |
| Renesas Electronics Corporation, TOKYO | | ASSOCIATE SG16 | | SIO |
| Synspective Inc., Koto-ku | ASSOCIATE SG7 | | | SIO / MANUFACTURER |
| KENYA |
| Cyber Security Africa Limited, Nairobi | | | ASSOCIATE SG2 | SIO / SERVICE PROVIDER |
| Silensec Africa Limited, NAIROBI | | | ASSOCIATE SG2 | OTHER ENTITY |
| KOREA (REP. OF) |
| Hyundai Mobis Co., Ltd., Seoul | | ASSOCIATE SG12 | | SIO |
| Korea Internet & Security Agency (KISA)., SEOUL | | ASSOCIATE SG17 | | ROA |
| LIECHTENSTEIN |
| Globalmatix AG, Vaduz | | ASSOCIATE SG2 | | SIO |
| LUXEMBOURG |
| OQ Technology, Leudelange | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Vast New Telecom SA, Roeser | | ASSOCIATE SG2 | | SIO |
| MALAYSIA |
| AngkasaX Innovation Sdn Bhd, Georgetown, Penang | ASSOCIATE SG4 | | | SIO |
| FNS (M) Sdn Bhd, KUALA LUMPUR | | ASSOCIATE SG17 | | SIO / SERVICE PROVIDER |
| XOX Com Sdn Bhd, PETALING JAYA | | ASSOCIATE SG3 | | ROA |
| MEXICO |
| EFTS Group, Mexico City | | ASSOCIATE SG12 | | OTHER ENTITY |
| Mediafon de Mexico, Mexico City | | ASSOCIATE SG11 | X | SIO |
| MONACO |
| Monaco Télécom, MONACO | | ASSOCIATE SG2 | | ROA / OPERATOR |
| MOZAMBIQUE |
| KAMALEON, Maputo | | ASSOCIATE SG16 | X | SIO |
| NAURU |
| Nauru Telikom Corporation, Aiwo | | ASSOCIATE SG2 | | SIO / SERVICE PROVIDER |
| NETHERLANDS (KINGDOM OF THE) |
| Athalos Global Services BV., HOOFDDORP | | ASSOCIATE SG2 | | ROA |
| 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 |
| Philips International B.V., EINDHOVEN | ASSOCIATE SG6 | | | SIO |
| Qorvo Utrecht B.V., Utrecht | ASSOCIATE SG1 | | | OTHER ENTITY |
| RGTN Wholesale B.V., Maastricht | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Signify Netherlands B.V., Eindhoven | | ASSOCIATE SG15 | | SIO |
| TKH Group NV, HAAKSBERGEN | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| NEW ZEALAND |
| Added Value Applications Limited, Waikanae | ASSOCIATE SG4 | | | OTHER ENTITY / CONSULTANT |
| Rakon Limited, AUCKLAND | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| NIGERIA |
| LiviaSoft Technologies Ltd., Abuja | ASSOCIATE SG5 | | | SIO |
| NORWAY |
| AeroMobile AS, OSLA | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Augmentcity AS, Alesund | | ASSOCIATE SG20 | | SIO |
| Tampnet AS, Stavanger | | ASSOCIATE SG2 | | ROA |
| OMAN |
| Space Communication Technologies LLC, Athaiba | ASSOCIATE SG4 | | | SIO |
| POLAND |
| Systemics-PAB sp. z o.o., Warsaw | | | ASSOCIATE SG2 | SIO / SERVICE PROVIDER |
| PORTUGAL |
| NOS Technology SA, Senhora da Hora, Porto | | ASSOCIATE SG15 | | SIO / SERVICE PROVIDER |
| RUSSIAN FEDERATION |
| MegaFon Open Joint Stock Company, MOSCOW | X | ASSOCIATE SG2 | | ROA |
| Svyazcom LLC, Krasnoyarsk | | ASSOCIATE SG11 | | SIO / MANUFACTURER |
| SINGAPORE |
| BBIX Singapore Pte. Ltd., Singapore | | ASSOCIATE SG2 | | ROA |
| Mozark Pte Ltd., Singapore | | ASSOCIATE SG12 | | SIO |
| SOUTH AFRICA |
| GEW Technologies (Pty) Ltd., Pretoria | ASSOCIATE SG1 | | ASSOCIATE SG1 | SIO |
| MTN Group Management Services (Pty) Ltd., Cresta | X | ASSOCIATE SG2 | X | ROA |
| Mytelnet (Pty) Ltd., Edenburg, Sandton | | ASSOCIATE SG2 | | ROA |
| SPAIN |
| Case On IT, Madrid | | ASSOCIATE SG12 | | OTHER ENTITY |
| Everycode-inSuit, Valencia | | | ASSOCIATE SG1 | SIO / SERVICE PROVIDER |
| Iberdrola, Madrid | | ASSOCIATE SG15 | | OTHER ENTITY |
| Insikt Intelligence, Barcelona | | ASSOCIATE SG17 | | SIO |
| Satelio IoT Services, S.L, Barcelona | ASSOCIATE SG4 | ASSOCIATE SG2 | | ROA |
| Startical, Madrid | ASSOCIATE SG4 | | | SIO / SERVICE PROVIDER |
| TOTHOMweb, Girona | | ASSOCIATE SG16 | | OTHER ENTITY |
| Wavecontrol, S.L., Barcelona | ASSOCIATE SG1 | ASSOCIATE SG5 | | SIO / MANUFACTURER |
| SUDAN |
| Almaahad Almutagadem Specialized Computer Training Center, Khartoum | | | ASSOCIATE SG2 | OTHER ENTITY |
| SWEDEN |
| Com4 Sweden AB, STOCKHOLM | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Net Insight AB, Solna | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Swedish Space Corporation (Rymdbolaget), SOLNA | ASSOCIATE SG4 | | | SIO |
| Tele2 Sverige Aktiebolag, Kista | | ASSOCIATE SG2 | | ROA |
| Telenor Connexion AB, SOLNA | | ASSOCIATE SG2 | | SIO |
| SWITZERLAND |
| Astrocast SA, Chavannes-près-Renens | ASSOCIATE SG4 | | | ROA |
| Fondation Botnar, Basel | | ASSOCIATE SG16 | | OTHER ENTITY |
| ID Quantique, Carouge | | ASSOCIATE SG17 | | SIO / MANUFACTURER |
| Phonegroup SA, Lugano | | ASSOCIATE SG2 | | ROA |
| Resilio, Lausanne | | ASSOCIATE SG5 | | SIO / MANUFACTURER |
| SITA Switzerland Sàrl, COINTRIN | | ASSOCIATE SG2 | | ROA |
| Sparrow Analytics SA, Nyon | | ASSOCIATE SG20 | | SIO |
| Telecom26 AG, ZUG | | ASSOCIATE SG2 | | ROA / SERVICE PROVIDER |
| TuringSign Global SA, Geneva | | ASSOCIATE SG17 | | SIO / SERVICE PROVIDER |
| u-blox AG, THALWIL | | ASSOCIATE SG15 | | SIO |
| THAILAND |
| SENKO Advanced Components (Thailand) Co., Ltd., Bangkok | | | ASSOCIATE SG2 | OTHER ENTITY |
| TUNISIA |
| Innov-Alliance-Tech, BEN AROUS | | ASSOCIATE SG20 | | SIO / R&D INSTITUTION |
| SAMA PARTNERS Business Solutions SARL, Tunis | | ASSOCIATE SG17 | | SIO |
| TüRKIYE |
| Fergani Uzay Teknolojileri, ISTANBUL | ASSOCIATE SG4 | | | OTHER ENTITY |
| Plan S Uydu ve Uzay Teknolojileri Anonim Şirketi, Ankara | ASSOCIATE SG4 | | | SIO |
| UNITED ARAB EMIRATES |
| Enablers DMCC, Dubai | | ASSOCIATE SG12 | | SIO |
| InMobiles, Dubai | | ASSOCIATE SG11 | | SIO |
| Just-ITC FZ LLC Dubai Branch, Dubai | | | ASSOCIATE SG1 | OTHER ENTITY |
| Technology Innovation Institute, Abu Dhabi | ASSOCIATE SG5 | ASSOCIATE SG13 | | SIO |
| Trace Media International FZ-LLC, Dubai | | ASSOCIATE SG13 | | OTHER ENTITY |
| UNITED KINGDOM |
| 3G Telecommunications Limited, LEEDS | | ASSOCIATE SG2 | | SIO / SERVICE PROVIDER |
| Access Space Alliance Ltd, London | ASSOCIATE SG4 | | | OTHER ENTITY |
| aql (numbering) Ltd., Leeds | | ASSOCIATE SG2 | | ROA |
| ARM Limited, CAMBRIDGE | | ASSOCIATE SG2 | X | ROA / SERVICE PROVIDER |
| Aviat Networks, BLANTYRE, GLASGOW | | ASSOCIATE SG15 | | ROA |
| Bourns Limited, BEDFORD | | ASSOCIATE SG5 | | SIO |
| Calnex Solutions plc., LINLITHGOW | | ASSOCIATE SG15 | | SIO / SERVICE PROVIDER |
| Capital City Service Limited, Watford | | ASSOCIATE SG17 | | ROA |
| CentralNic Group PLC, London | | | ASSOCIATE SG2 | SIO |
| 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 |
| 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 |
| 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 |
| River Advisers, Parkfield, Douglas | ASSOCIATE SG4 | | | SIO |
| 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 |
| Tyntec Group Ltd, London | | ASSOCIATE SG2 | | ROA |
| World Mobile Group Ltd., London | | ASSOCIATE SG2 | X | ROA |
| UNITED STATES |
| AB Handshake Corporation, Miami | | ASSOCIATE SG2 | | SIO |
| ACES Inc., Washington | ASSOCIATE SG5 | | | OTHER ENTITY |
| Aeris Communications, Inc., SAN JOSE | | ASSOCIATE SG2 | | SIO |
| Aetna, OGDENSBURG | | ASSOCIATE SG17 | | SIO |
| Bandwidth, Inc., RALEIGH | | ASSOCIATE SG2 | | ROA |
| Beamlink, Inc., Los Angeles | | ASSOCIATE SG2 | | SIO / MANUFACTURER |
| Bloxtel Inc., San Francisco | | ASSOCIATE SG2 | ASSOCIATE SG1 | SIO / SERVICE PROVIDER |
| Calix Networks, Inc., PETALUMA | | ASSOCIATE SG15 | | SIO |
| Ciena Corporation, HANOVER | | ASSOCIATE SG15 | | SIO |
| Corporation for National Research Initiatives, RESTON | | ASSOCIATE SG17 | X | SIO |
| Deer Management Systems DBA Tactacam, Caledonia | | ASSOCIATE SG2 | | SIO / SERVICE PROVIDER |
| DZS Inc., Plano | | ASSOCIATE SG15 | | SIO |
| Entirety LLC, Mount Dora | ASSOCIATE SG5 | | | OTHER ENTITY |
| Epson America Inc., SAN JOSE | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Futurewei Technologies Inc., BRIDGEWATER | | ASSOCIATE SG15 | | SIO / R&D INSTITUTION |
| Google Fiber, MOUNTAIN VIEW | | ASSOCIATE SG15 | | ROA |
| II-VI Incorporated, San Jose | | ASSOCIATE SG15 | | SIO |
| Iridium Satellite LLC., MCLEAN | X | ASSOCIATE SG2 | X | ROA |
| Keysight Technologies, Inc., SANTA ROSA | X | ASSOCIATE SG12 | | SIO / MANUFACTURER |
| KORE Wireless Inc., Alpharetta | | ASSOCIATE SG2 | | SIO |
| Limitless Mobile, LLC, HARRISBURG | | ASSOCIATE SG2 | | SIO |
| Lumentum, San Jose | | ASSOCIATE SG15 | | SIO |
| Lynk Global, Inc, Falls Church | | ASSOCIATE SG2 | | SIO / SERVICE PROVIDER |
| Marvell Semiconductor, Inc., SANTA CLARA | | ASSOCIATE SG15 | | SIO |
| MethaneSAT LLC, Austin | ASSOCIATE SG7 | | | SIO / SERVICE PROVIDER |
| Mozilla Corporation, San Francisco | | ASSOCIATE SG3 | X | OTHER ENTITY |
| Mudd Law, Chicago | ASSOCIATE SG7 | | | SIO |
| Net Vision Consultants Inc., Stevensville | | ASSOCIATE SG11 | | SIO |
| OFS Fitel, LLC, SOMERSET | | ASSOCIATE SG15 | | SIO |
| Ookla, SEATTLE | | ASSOCIATE SG12 | | SIO |
| Parsons Corporation, Colorado Springs | ASSOCIATE SG4 | | | OTHER ENTITY |
| Peraton Labs, RED BANK | | ASSOCIATE SG11 | | OTHER ENTITY / CONSULTANT |
| Saturn Satellite Networks Inc., Englewood | ASSOCIATE SG4 | | | 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 |
| Subcom, LLC, EATONTOWN | | ASSOCIATE SG15 | | SIO |
| Syniverse Technologies, LLC, TAMPA | | ASSOCIATE SG2 | | SIO |
| T-Mobile USA, Inc, Bellevue | X | ASSOCIATE SG16 | | ROA |
| TCI International, Inc., FREMONT | ASSOCIATE SG1 | | | SIO |
| 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 |
| VIAVI Solutions, Chandler | ASSOCIATE SG5 | | | SIO / MANUFACTURER |
| 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 |
| ZIMBABWE |
| Powertel Communications (PVT) Ltd., HARARE | | | ASSOCIATE SG2 | ROA |
| 283 Associates (ITU-R=8, ITU-T=2, ITU-D=9, any=16; Associates: ITU-R=42, ITU-T=231, ITU-D=20, any=283). |
