| Name | ITU-R | ITU-T | ITU-D | Categories |
| ARGENTINA |
| Empresa Argentina de Soluciones Satelitales (AR-SAT S.A.), BUENOS AIRES | ASSOCIATE SG4 | | X | ROA |
| BANGLADESH |
| Robi Axiata Limited, DHAKA | | | ASSOCIATE SG1 | ROA |
| BELGIUM |
| BICS SA, BRUSSELS | | ASSOCIATE SG2 | | ROA / SERVICE PROVIDER |
| Voxbone SA, BRUXELLES | | ASSOCIATE SG2 | | ROA |
| BOSNIA AND HERZEGOVINA |
| Mtel a.d Banja Luka, BANJA LUKA | | ASSOCIATE SG3 | X | ROA / OPERATOR |
| BOTSWANA |
| Botswana Fibre Networks, GARBORONE | | ASSOCIATE SG15 | | ROA / SERVICE PROVIDER |
| BRAZIL |
| ADVISIA OC&C Strategy Consultants, SAO PAULO | | | ASSOCIATE SG1 | OTHER ENTITY / CONSULTANT |
| UTC América Latina, RIO DE JANEIRO | ASSOCIATE SG5 | | | OTHER ENTITY |
| CANADA |
| Corinex Communications Corporation, VANCOUVER | | ASSOCIATE SG15 | | SIO |
| EXFO Inc., QUEBEC | | ASSOCIATE SG15 | | SIO |
| Integrated Device Technology (IDT), OTTAWA | | ASSOCIATE SG15 | | SIO |
| ISARA Corporation, WATERLOO | | ASSOCIATE SG17 | | SIO |
| Videotron s.e.n.c., MONTRÉAL | ASSOCIATE SG5 | X | | ROA / OPERATOR |
| CHINA |
| Beijing JiShi HuiTong Technology Co.,Ltd, BEIJING | | ASSOCIATE SG9 | | SIO |
| BOE Technology Group Co. Ltd., BEIJING | | ASSOCIATE SG16 | | SIO |
| China Tower Corporation Limited, HAIDIAN DISTRICT, BEIJING | ASSOCIATE SG5 | | | ROA / OPERATOR |
| Guangdong DAPU Telecom Technology Co. Ltd., DONGGUAN | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Guizhou Creco Technology Ltd., Guiyang | | ASSOCIATE SG16 | | SIO |
| Hisilicon Technologies Co. Ltd., SHENZHEN | | ASSOCIATE SG15 | | SIO |
| Shenzhen OLYM Information Security Technology Co. Ltd., SHENZHEN | | ASSOCIATE SG17 | | OTHER ENTITY |
| Shenzhen Skyworth Digital Technology Co. Ltd., SHENZHEN | | ASSOCIATE SG9 | | SIO |
| StarTimes Software Technology Co. Ltd., BEIJING | | | ASSOCIATE SG1 | SIO / MANUFACTURER |
| System Engineering Research Institute, Beijing | | ASSOCIATE SG20 | | SIO |
| VisionVera Information Technology Co. Ltd., Beijing | | ASSOCIATE SG16 | | SIO |
| Wangsu Science & Technology Co. Ltd., SHANGHAI | | ASSOCIATE SG16 | | ROA |
| Xiamen SET Electronics Co., Ltd, Xiamen | | ASSOCIATE SG5 | | SIO / MANUFACTURER |
| 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 |
| DENMARK |
| Brüel & Kjaer Sound & Vibration Measurements A/S, NAERUM | | ASSOCIATE SG12 | | SIO |
| GN Netcom A/S, BALLERUP | | ASSOCIATE SG12 | | SIO / MANUFACTURER |
| Maersk Line A/S, Copenhagen | | ASSOCIATE SG2 | | OTHER ENTITY |
| Vattenfall Vindkraft A/S, Esbjerg | | ASSOCIATE SG2 | | ROA |
| EGYPT |
| Orange Egypt, CAIRO | | | ASSOCIATE SG2 | ROA / OPERATOR |
| ESTONIA |
| Clementvale Baltic OÜ, TALLINN | | ASSOCIATE SG2 | | ROA |
| FRANCE |
| Bouygues Telecom, MEUDON LA FORÊT | ASSOCIATE SG5 | ASSOCIATE SG2 | | ROA |
| Enedis, NANTERRE | | ASSOCIATE SG15 | | OTHER ENTITY |
| FraudBuster, VÉLIZY-VILLACOUBLAY | | ASSOCIATE SG3 | | SIO |
| InfoVista SAS, LES ULIS | | ASSOCIATE SG12 | | OTHER ENTITY |
| Legos, PARIS | | ASSOCIATE SG2 | | ROA / OPERATOR |
| MStar Semiconductor, Inc. (MStar), ISSY-LES-MOULINEAUX | ASSOCIATE SG6 | | | SIO |
| Opale Systems, LES ULIS | | ASSOCIATE SG12 | | SIO |
| Planet Network International, LABEGE | | ASSOCIATE SG12 | | SIO |
| Sigfox, LABEGE | X | ASSOCIATE SG20 | | ROA |
| Société nationale des chemins de fer français, LA PLAINE ST DENIS CEDEX | | ASSOCIATE SG5 | | SIO |
| Thales SIX GTS France SAS, GENNEVILLIERS CEDEX | | ASSOCIATE SG17 | | SIO |
| TRANSATEL, PUTEAUX CEDEX | | ASSOCIATE SG2 | | ROA / OPERATOR |
| GERMANY |
| 1NCE GmbH, Cologne | | ASSOCIATE SG2 | | ROA |
| AVM Audiovisuelles Marketing und Computersysteme GmbH, BERLIN | | ASSOCIATE SG15 | | ROA / MANUFACTURER |
| DENIC eG, FRANKFURT AM MAIN | | ASSOCIATE SG2 | | OTHER ENTITY |
| devolo AG, Aachen | | ASSOCIATE SG15 | | SIO |
| EMnify GmbH, WÜRZBURG | | 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 |
| P3 Communications GmbH, AACHEN | | ASSOCIATE SG12 | | OTHER ENTITY |
| Power Plus Communications AG, MANNHEIM | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| SIGOS, NUERNBERG | | ASSOCIATE SG12 | | SIO / MANUFACTURER |
| GREECE |
| Hellenic Telecommunications Organization S.A. (OTE), MAROUSSI - ATHENS | | ASSOCIATE SG20 | | ROA / OPERATOR |
| Raycap SA, ATHENS | | ASSOCIATE SG5 | | SIO / MANUFACTURER |
| HUNGARY |
| Tel2tel Kft., BUDAPEST | | ASSOCIATE SG2 | | ROA / SERVICE PROVIDER |
| ICELAND |
| IMC Ísland, REYKJAVIK | | ASSOCIATE SG2 | | ROA / OPERATOR |
| INDIA |
| Konkan Railway Corporation Ltd., NAVI MUMBAI | | | ASSOCIATE SG2 | OTHER ENTITY |
| Telecommunications Standards Development Society, India (TSDSI), GURGAON | ASSOCIATE SG5 | ASSOCIATE SG15 | | OTHER ENTITY |
| IRAN (ISLAMIC REPUBLIC OF) |
| Iranian Net Communication & Electronic Services Co., TEHRAN | | | ASSOCIATE SG2 | ROA / OPERATOR |
| Monenco Iran, TEHRAN | | | ASSOCIATE SG2 | OTHER ENTITY |
| IRELAND |
| Afilias Ltd., Dublin | | | ASSOCIATE SG2 | ROA |
| Cubic Telecom Ltd., DUBLIN | | ASSOCIATE SG2 | | ROA |
| DIDWW Ireland Limited, DUBLIN | | ASSOCIATE SG2 | | ROA |
| ISRAEL |
| Beezz Communication Sol. Ltd., PETACH TIKVA | | ASSOCIATE SG2 | | ROA / SERVICE PROVIDER |
| IP Light, PETACH TIKVA | | ASSOCIATE SG15 | | SIO |
| JpU Io Ltd., Petach Tikva | | ASSOCIATE SG2 | | SIO |
| RAD Data Communications, Ltd., TEL AVIV | | ASSOCIATE SG15 | | SIO |
| Sckipio Technologies S.I. Ltd., RAMAT GAN | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| ITALY |
| CommProve Technologies SpA, FIRENZE | | ASSOCIATE SG12 | | SIO / MANUFACTURER |
| Sky Chance Trading, ROME | ASSOCIATE SG4 | | | OTHER ENTITY |
| SM Optics s.r.l., MILAN | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| JAPAN |
| Anritsu Corporation, KANAGAWA | | 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 |
| MCC Corporation, TOKYO | ASSOCIATE SG4 | | | SIO |
| MegaChips Corporation, OSAKA | | ASSOCIATE SG15 | | SIO |
| Mitsubishi Electric Corporation, TOKYO | X | X | ASSOCIATE SG1 | SIO |
| Mitsubishi Research Institute, Inc., TOKYO | ASSOCIATE SG1 | | | SIO |
| Murata Manufacturing Company Ltd., NAGAOKAKYO-SHI | | ASSOCIATE SG15 | | SIO |
| Renesas Electronics Corporation, TOKYO | | ASSOCIATE SG16 | | SIO |
| KENYA |
| 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 |
| LITHUANIA |
| NRD Cyber Security (CS), VILNIUS | | | ASSOCIATE SG2 | OTHER ENTITY |
| MALAYSIA |
| XOX Com Sdn Bhd, PETALING JAYA | | ASSOCIATE SG3 | | ROA |
| MALTA |
| Wins Limited, ST VENERA | | ASSOCIATE SG2 | | ROA / OPERATOR |
| MONACO |
| Monaco Télécom, MONACO | | ASSOCIATE SG2 | | ROA / OPERATOR |
| NETHERLANDS |
| Athalos PRS-Telecom, HOOFDDORP | | ASSOCIATE SG2 | | ROA |
| GloTell B.V., ZOETEMEER | | ASSOCIATE SG2 | | ROA |
| 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 |
| Signify/Philips Lighting B.V., Eindhoven | | ASSOCIATE SG15 | | SIO |
| Tata Communications MOVE B.V., NIEUWEGEIN | | ASSOCIATE SG2 | | ROA / OPERATOR |
| TKH Group NV, HAAKSBERGEN | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| NEW ZEALAND |
| Rakon Limited, AUCKLAND | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| NORWAY |
| AeroMobile AS, OSLA | | ASSOCIATE SG2 | | ROA / OPERATOR |
| PAKISTAN |
| 3G Technologies (Guarantee) Limited, Islamabad | | | ASSOCIATE SG2 | OTHER ENTITY |
| RUSSIAN FEDERATION |
| Kaspersky Lab AO, MOSCOW | | ASSOCIATE SG20 | | SIO |
| MegaFon Open Joint Stock Company, MOSCOW | X | ASSOCIATE SG2 | | ROA |
| SLOVAKIA |
| Slovak Telekom, a.s., BRATISLAVA | | ASSOCIATE SG13 | | ROA |
| SOUTH AFRICA |
| GEW Technologies (Pty) Ltd., Pretoria | ASSOCIATE SG1 | | ASSOCIATE SG1 | SIO |
| MTN Group Management Services (Pty) Ltd., FAIRLAND, ROODEPOORT | | ASSOCIATE SG2 | | ROA |
| SPAIN |
| Axon Partners Group Consulting, Madrid | | | ASSOCIATE SG1 | OTHER ENTITY |
| Iberdrola, Madrid | | ASSOCIATE SG15 | | OTHER ENTITY |
| SWEDEN |
| Com4 Sweden AB, STOCKHOLM | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Swedish Space Corporation (Rymdbolaget), SOLNA | ASSOCIATE SG4 | | | SIO |
| Tele2 IoT, Kista | | ASSOCIATE SG2 | | ROA |
| Telenor Connexion AB, STOCKHOLM | | ASSOCIATE SG2 | | SIO |
| SWITZERLAND |
| Ascom (Switzerland) Ltd., SOLOTHURN | | ASSOCIATE SG12 | | SIO |
| Fondation Botnar, Basel | | ASSOCIATE SG16 | | OTHER ENTITY |
| High-Tech Bridge SA, Geneva | | | ASSOCIATE SG2 | ROA |
| ID Quantique, Carouge | | ASSOCIATE SG17 | | SIO / MANUFACTURER |
| OnAir, COINTRIN GENÈVE 1 | | ASSOCIATE SG2 | | ROA |
| Phonegroup SA, Lugano | | ASSOCIATE SG2 | | ROA |
| QRCrypto SA C/O itk AVtobvS Sarl, Fribourg | | ASSOCIATE SG17 | | OTHER ENTITY |
| Telecom26 AG, ZUG | | ASSOCIATE SG2 | | ROA / SERVICE PROVIDER |
| u-blox AG, THALWIL | | ASSOCIATE SG15 | | SIO |
| TUNISIA |
| Prisma, TUNIS | | ASSOCIATE SG12 | | OTHER ENTITY |
| TELNET TECHNOCENTRE, TUNIS | | ASSOCIATE SG13 | | SIO |
| UKRAINE |
| Ukrainian Number and Address Operation Center Consortium (UNAOC), KIEV | | | ASSOCIATE SG2 | OTHER ENTITY |
| UNITED KINGDOM |
| ARM Limited, CAMBRIDGE | | ASSOCIATE SG2 | X | ROA / SERVICE PROVIDER |
| Aviat Networks, BLANTYRE, GLASGOW | | ASSOCIATE SG15 | | ROA |
| Bourns Limited, BEDFORD | | ASSOCIATE SG5 | | SIO |
| Calnex Solutions Limited, LINLITHGOW | | ASSOCIATE SG15 | | SIO / SERVICE PROVIDER |
| Cambridge Quantum Computing, Cambridge | | ASSOCIATE SG17 | | OTHER ENTITY |
| Capital City Service Limited, Hertfordshire | | ASSOCIATE SG17 | | ROA |
| Chronos Technology Limited, LYDBROOK | | ASSOCIATE SG15 | | SIO |
| Dense Air, Slough | | ASSOCIATE SG2 | | ROA |
| JT (Jersey) Limited, ST. HELIER, JERSEY | | ASSOCIATE SG2 | | ROA |
| Littelfuse UK Ltd., SWINDON | | ASSOCIATE SG5 | | SIO |
| Manx Telecom Trading Ltd., BRADDAN | | ASSOCIATE SG2 | | ROA / SERVICE PROVIDER |
| OpenSignal Limited, London | | ASSOCIATE SG12 | | ROA |
| Sama Telecom Ltd, LONDON | | ASSOCIATE SG2 | | ROA |
| Sawatch Limited, MILTON KEYNES | | ASSOCIATE SG2 | | ROA |
| Tinklabs Limited, LONDON | | ASSOCIATE SG2 | | ROA / SERVICE PROVIDER |
| Truphone Limited, London | | ASSOCIATE SG2 | | ROA |
| Tyntec Group Ltd, London | | ASSOCIATE SG2 | | ROA |
| Vision Ng, TWICKENHAM | | ASSOCIATE SG2 | | OTHER ENTITY |
| UNITED STATES |
| Acacia Communications, Inc, MAYNARD | | ASSOCIATE SG15 | | SIO |
| Adaptive Spectrum and Signal Alignment (ASSIA) Inc., REDWOOD CITY | | ASSOCIATE SG15 | | SIO |
| Aeris Communications, Inc., SAN JOSE | | ASSOCIATE SG2 | | SIO |
| Aetna, OGDENSBURG | | ASSOCIATE SG17 | | SIO |
| Analog Devices, Inc., SAN JOSE | | ASSOCIATE SG15 | | SIO |
| Applied Optoelectronics, Inc.,, SUGAR LAND | | ASSOCIATE SG15 | | SIO |
| ARRIS Group, Inc., SUWANEE | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Bandwidth.com, Inc., RALEIGH | | ASSOCIATE SG2 | | ROA |
| Broadcom Corporation, IRVINE | ASSOCIATE SG5 | X | | SIO |
| Calix Networks, Inc., PETALUMA | | ASSOCIATE SG15 | | SIO |
| Ciena Corporation, HANOVER | | ASSOCIATE SG15 | | SIO |
| Continental Automotive Systems Inc., Deer Park | | ASSOCIATE SG12 | | SIO |
| Corporation for National Research Initiatives, RESTON | | ASSOCIATE SG17 | X | SIO |
| Ellipsat Inc, WASHINGTON | | ASSOCIATE SG2 | | SIO |
| Epson Electronics America, SAN JOSE | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Finisar Corporation, SUNNYVALE | | ASSOCIATE SG15 | | SIO |
| FORTINET Inc., Sunnyvale | | ASSOCIATE SG17 | | OTHER ENTITY |
| Fujitsu Network Communications, Inc., RICHARDSON | | ASSOCIATE SG15 | | SIO |
| Futurewei Technologies US R&D Center, BRIDGEWATER | | ASSOCIATE SG15 | | SIO / R&D INSTITUTION |
| Globecomm Network Services Corporation, HAUPPAUGE | | ASSOCIATE SG2 | | ROA / OPERATOR |
| Google Fiber, MOUNTAIN VIEW | | ASSOCIATE SG15 | | ROA |
| Hudson Institute, Washington | | ASSOCIATE SG17 | | OTHER ENTITY |
| IBM, POUGHKEEPSIE | | ASSOCIATE SG15 | | OTHER ENTITY |
| Inphi Corporation, SANTA CLARA | | ASSOCIATE SG15 | | SIO |
| Iridium Satellite LLC., MCLEAN | X | ASSOCIATE SG2 | X | ROA |
| Keysight Technologies, SANTA ROSA | ASSOCIATE SG1 | | | SIO / MANUFACTURER |
| Limitless Mobile, LLC, HARRISBURG | | ASSOCIATE SG2 | | SIO |
| Lumentum, MILPITAS | | ASSOCIATE SG15 | | SIO |
| MovieLabs, San Francisco | | ASSOCIATE SG9 | | OTHER ENTITY |
| NICE InContact, SANDY | | ASSOCIATE SG15 | | ROA / SERVICE PROVIDER |
| nVent Electric, SOLON | | ASSOCIATE SG5 | | SIO |
| OFS Fitel, LLC, SOMERSET | | ASSOCIATE SG15 | | SIO |
| Oration Technologies, Inc., OMAHA | | ASSOCIATE SG2 | | ROA |
| Perspecta Labs Inc., RED BANK | | ASSOCIATE SG20 | | OTHER ENTITY / CONSULTANT |
| Private Internet Access, LOS ANGELES | | ASSOCIATE SG17 | | SIO |
| Quantum Xchange, Bethesda | | ASSOCIATE SG17 | | SIO |
| Qulsar, Inc., SAN JOSE | | ASSOCIATE SG15 | | SIO |
| Silicon Laboratories, Inc., AUSTIN | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Space Systems Loral, PALO ALTO, CA | ASSOCIATE SG5 | | | SIO / MANUFACTURER |
| Sprint Corporation, OVERLAND PARK | X | ASSOCIATE SG16 | | ROA |
| Subcom, LLC, EATONTOWN | | ASSOCIATE SG15 | | SIO |
| Syniverse Technologies, LLC, TAMPA | | ASSOCIATE SG2 | | SIO |
| TCI International, Inc., FREMONT | ASSOCIATE SG1 | | | SIO |
| Tektronix, Inc., BEAVERTON | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Tibit Communications, PETALUMA | | ASSOCIATE SG15 | | SIO |
| Toda Network Corporation, San Francisco | | ASSOCIATE SG11 | | SIO |
| Twilio Inc., SAN FRANSISCO | | ASSOCIATE SG2 | | SIO |
| Ubilinx Technology, Inc., SAN JOSE | | ASSOCIATE SG15 | | SIO |
| Vidyo, Inc., HACKENSACK | | ASSOCIATE SG16 | | SIO |
| Xelic, Inc., PITTSFORD | | ASSOCIATE SG15 | | SIO |
| XPERI, CALABASAS | ASSOCIATE SG6 | | | SIO / MANUFACTURER |
| Ygomi LLC, GRAND FORKS | | ASSOCIATE SG16 | | SIO |
| 203 Associates (ITU-R=5, ITU-T=3, ITU-D=5, any=11; Associates: ITU-R=20, ITU-T=172, ITU-D=16, any=203). |
