| Name | ITU-R | ITU-T | ITU-D | Categories |
| International Information and Communications Policy (ICP), WASHINGTON, D.C. | | | | ADMIN |
| Federal Communications Commission, WASHINGTON D.C. | | | | ADMIN RELATED / REGULATOR |
| International Telecommunication Settlements Section (Maritime), WASHINGTON, D.C. | | | | ADMIN RELATED |
| National Telecommunications and Information Administration (NTIA), WASHINGTON | | | | ADMIN RELATED |
| AB Handshake Corporation, Miami | | ASSOCIATE SG2 | | SIO |
| ACES Inc., Washington | ASSOCIATE SG5 | | | OTHER ENTITY |
| ADTRAN Holdings Inc., HUNTSVILLE | | X | | SIO |
| Aeris Communications, Inc., SAN JOSE | | ASSOCIATE SG2 | | SIO |
| Aetna, OGDENSBURG | | ASSOCIATE SG17 | | SIO |
| Amazon Web Services, Inc., Seattle | | | X | SIO |
| Amazon.com Services, LLC, Redmond | X | | X | SIO |
| American Tower Corporation, BOSTON | X | | X | ROA |
| Apple Inc., CUPERTINO | X | X | | SIO |
| AST & Science SpaceMobile, Midland | | | X | OTHER ENTITY |
| AT&T, Inc., ATLANTA | X | X | X | ROA |
| Aviation Spectrum Resources, Inc., ANNAPOLIS | X | | | ROA |
| Bandwidth, Inc., RALEIGH | | ASSOCIATE SG2 | | ROA |
| Beamlink, Inc., Los Angeles | | ASSOCIATE SG2 | | SIO / MANUFACTURER |
| BitSight Technologies, Inc., BOSTON | | | X | SIO |
| Bloxtel Inc., San Francisco | | ASSOCIATE SG2 | ASSOCIATE SG1 | SIO / SERVICE PROVIDER |
| Broadcom Corporation, Palo Alto | | X | | SIO |
| CableLabs, Louisville | | X | | SIO / R&D INSTITUTION |
| Calix Networks, Inc., PETALUMA | | ASSOCIATE SG15 | | SIO |
| Ciena Corporation, HANOVER | | ASSOCIATE SG15 | | SIO |
| Cisco Systems, Inc., SAN JOSE | X | X | X | SIO |
| CommScope, Claremont | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Corning Incorporated, CORNING | | X | | SIO |
| Corporation for National Research Initiatives, RESTON | | ASSOCIATE SG17 | X | SIO |
| CTIA THE WIRELESS ASSOCIATION, Washington | X | | | OTHER ENTITY / PROFESSIONAL ASSOCIA |
| Deer Management Systems DBA Tactacam, Caledonia | | ASSOCIATE SG2 | | SIO / SERVICE PROVIDER |
| Dell Technologies, HOPKINTON | X | | | SIO / MANUFACTURER |
| Dish Network, WASHINGTON | X | | | ROA / OPERATOR |
| DLA Piper LLC, Washington | X | | | OTHER ENTITY / CONSULTANT |
| Dolby Laboratories, SAN FRANCISCO | | X | | SIO |
| E-Space Inc., Stuart | | | X | SIO |
| EchoStar Operating LLC, GERMANTOWN | X | | | SIO |
| Entirety LLC, Mount Dora | ASSOCIATE SG5 | | | OTHER ENTITY |
| Epson America Inc., SAN JOSE | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| Five 9 Inc., San Ramon | | X | | OTHER ENTITY |
| FORTINET Inc., Sunnyvale | | | X | OTHER ENTITY |
| Frontier Communication, Lewisville, TX | X | X | | SIO / SERVICE PROVIDER |
| Futurewei Technologies Inc., BRIDGEWATER | | ASSOCIATE SG15 | | SIO / R&D INSTITUTION |
| Globalstar, Inc., MILPITAS | X | X | | ROA |
| Google Fiber, MOUNTAIN VIEW | | ASSOCIATE SG15 | | ROA |
| Google Inc., MOUNTAIN VIEW | X | X | | SIO |
| Hughes Network Systems, LLC, GERMANTOWN | | | X | ROA |
| 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 |
| Intelsat US LLC, McLean | X | | X | ROA |
| InterDigital Communications, Inc., CONSHOHOCKEN | X | X | | SIO |
| Intuitive Machines, Houston | X | | | SIO / SERVICE PROVIDER |
| Iridium Satellite LLC., MCLEAN | X | ASSOCIATE SG2 | X | ROA |
| ITRI International Inc., SAN JOSE | X | | | SIO |
| Juniper Networks, SUNNYVALE | | X | | SIO |
| Keysight Technologies, Inc., SANTA ROSA | X | ASSOCIATE SG12 | | SIO / MANUFACTURER |
| KORE Wireless Inc., Alpharetta | | ASSOCIATE SG2 | | SIO |
| Kratos Communications, ALEXANDRIA | X | | | SIO |
| Ligado NETWORKS LLC, RESTON | X | | | 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 |
| MethaneSAT LLC, Austin | ASSOCIATE SG7 | | | SIO / SERVICE PROVIDER |
| Microchip Technology Inc., SAN JOSE | | X | | SIO |
| Microsoft Corporation, REDMOND | X | X | X | SIO / MANUFACTURER |
| Motorola Mobility LLC, CHICAGO | X | | | SIO |
| Motorola Solutions Inc., WASHINGTON | X | | | SIO |
| Mozilla Corporation, San Francisco | | ASSOCIATE SG3 | X | OTHER ENTITY |
| Mudd Law, Chicago | ASSOCIATE SG7 | | | SIO |
| Net Vision Consultants Inc., Stevensville | | ASSOCIATE SG11 | | SIO |
| Netflix Inc., LOS GATOS | | X | X | SIO / SERVICE PROVIDER |
| Nokia USA, MURRAY HILL | | X | | SIO |
| OFS Fitel, LLC, SOMERSET | | ASSOCIATE SG15 | | SIO |
| Omnispace, LLC, TYSONS | | | X | ROA |
| Ookla, SEATTLE | | ASSOCIATE SG12 | | SIO |
| Parsons Corporation, Colorado Springs | ASSOCIATE SG4 | | | OTHER ENTITY |
| People Centered Internet, Palo Alto | | | X | OTHER ENTITY |
| Peraton Labs, RED BANK | | ASSOCIATE SG11 | | OTHER ENTITY / CONSULTANT |
| Planet Labs PBC, San Francisco | X | | | SIO / SERVICE PROVIDER |
| Qualcomm, Inc., SAN DIEGO | X | X | X | SIO |
| Raytheon Technologies, WALTHAM | X | | | SIO |
| Resecurity, Inc., Los Angeles | | | X | SIO |
| RKF Engineering Solutions, LLC, Bethesda | X | | X | OTHER ENTITY |
| Shure Incorporated, Niles | 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 |
| Space Exploration Technologies Corp. (SpaceX), Washington D.C. | X | | X | SIO / MANUFACTURER |
| 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 |
| Telecommunications Management Group Inc., ARLINGTON | | | X | OTHER ENTITY |
| Telnyx LLC, Chicago | | ASSOCIATE SG2 | | SIO / SERVICE PROVIDER |
| The Boeing Company, ARLINGTON | X | | | SIO |
| The Walt Disney Company, WASHINGTON D.C. | | | X | OTHER ENTITY |
| TQ Delta, AUSTIN | | ASSOCIATE SG15 | | SIO |
| Twilio Inc., SAN FRANSISCO | | ASSOCIATE SG2 | | SIO |
| United Nations Foundation (Digital Impact Alliance), Washington | | | X | FDI |
| United Nations Office for Partnerships, NEW YORK | | | | |
| Verizon Communication Corporation, Basking Ridge | X | X | X | ROA |
| Viasat, Inc., CARLSBAD | X | | X | ROA |
| 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 | | | SIO / MANUFACTURER |
| Zenaciti Corporation, Beaverton | | X | | SIO |
