| [Signatory Name] | Country | Date_Signed | Date_Received |
| ACeS India Private Limited [[NOT ACTIVE]] | India (Republic of) | 28/09/1998 | 05/10/1998 |
| Addvalue Communications Pte Ltd [[NOT ACTIVE]] | Singapore (Republic of) | 12/02/2007 | 16/02/2007 |
| Agence de Régulation des Télécommunications (ART) | Cameroon (Republic of) | 04/04/1997 | 04/04/1997 |
| Agence de Régulation et de Contrôle des Télécommunications (ARCT) | Burundi (Republic of) | 02/03/1998 | 12/03/1998 |
| Agence des Télécommunications de Côte d'Ivoire (ATCI) | Côte d'Ivoire (Republic of) | 17/09/2002 | 18/09/2002 |
| Agência Nacional das Comunicações - ANAC | Cape Verde (Republic of) | 15/03/1999 | 16/03/1999 |
| Agência Nacional de Telecomunicações - ANATEL | Brazil (Federative Republic of) | 24/06/1997 | 24/06/1997 |
| Angola Institute of Communications (INACOM) | Angola (Republic of) | 15/11/2000 | 15/11/2000 |
| Ascom Management AG [[NOT ACTIVE]] | Switzerland (Confederation of) | 30/08/1999 | 30/08/1999 |
| Asian Cellular Satellite Bgd. Ltd. [[NOT ACTIVE]] | Bangladesh (People's Republic of) | 16/09/2001 | 17/09/2001 |
| AT&T Corp. [[NOT ACTIVE]] | United States of America | 26/03/1997 | 01/04/1997 |
| Autoridade Reguladora Nacional das Tecnologias de Informação e Comunicação (ARN) | Guinea-Bissau (Republic of) | 11/10/2001 | 12/10/2001 |
| Autoridad Nacional de los Servicios Públicos (ASEP) | Panama (Republic of) | 18/08/1998 | 25/08/1998 |
| Autorité de Régulation des Télécommunications et des Postes (ARTP) | Senegal (Republic of) | 17/08/2007 | 17/08/2007 |
| Autorité de Régulation | Mauritania (Islamic Republic of) | 01/04/2002 | 03/05/2002 |
| Autorité Transitoire de Régulation des Postes et Télécommunications (ATRPT) | Benin (Republic of) | 29/10/1998 | 12/04/1999 |
| BGH Comunicaciones [[NOT ACTIVE]] | Argentine Republic | 07/02/2000 | 16/02/2000 |
| Botswana Communications Regulatory Authority (BOCRA) | Botswana (Republic of) | 25/09/1998 | 30/11/1998 |
| Bundesministerium für Verkehr, Innovation und Technologie | Austria | 14/12/1998 | 21/12/1998 |
| Comisión Federal de Telecomunicaciones (COFETEL) | Mexico | 09/03/1998 | 24/03/1998 |
| Comisión Nacional de Telecomunicaciones (CONATEL) | Honduras (Republic of) | 21/07/1998 | 03/08/1998 |
| Communications Commission of Kenya (CCK) | Kenya (Republic of) | 03/04/1997 | 03/04/1997 |
| Communication Service under the Government of the Republic of Tajikistan | Tajikistan (Republic of) | 08/09/1998 | 09/09/1998 |
| Communications Regulatory Authority of Namibia (CRAN) | Namibia (Republic of) | 18/08/1999 | 09/09/1999 |
| COMSAT Corporation [[NOT ACTIVE]] | United States of America | 12/05/1997 | 16/05/1997 |
| DAMOS SudAmerica S.A. [[NOT ACTIVE]] | Brazil (Federative Republic of) | 10/09/1998 | 15/09/1998 |
| Danish Business Authority | Denmark | 20/11/1998 | 26/11/1998 |
| Datacom Corporation [[NOT ACTIVE]] | Korea (Republic of) | 04/04/1997 | 04/04/1997 |
| DDI Corporation [[NOT ACTIVE]] | Japan | 24/06/1997 | 03/07/1997 |
| DeLorme Publishing | United States of America | 12/06/2012 | 04/07/2012 |
| Department of Communications | South Africa (Republic of) | 10/10/1997 | 21/10/1997 |
| Directorate General for Energy, Telecommunications and Competition | Netherlands (Kingdom of the) | 06/03/2000 | 13/03/2000 |
| Elbit Systems BMD and Land EW - Elisra Ltd. | Israel (State of) | 21/12/1997 | 07/01/1998 |
| Ellipso, Inc. [[NOT ACTIVE]] | United States of America | 07/03/1997 | 12/03/1997 |
| Elsacom S.p.A. [[NOT ACTIVE]] | Italy | 06/04/1998 | 20/04/1998 |
| Ericsson Mobile Communications (UK) Ltd. [[NOT ACTIVE]] | United Kingdom of Great Britain and Northern Ireland | 06/12/1999 | 15/12/1999 |
| EUROPEAN DATACOMM N.V. [[NOT ACTIVE]] | Belgium | 28/03/2000 | 28/03/2000 |
| European Union | International (no specific country) | 31/07/1997 | 16/09/1997 |
| Euroskyway [[NOT ACTIVE]] | Italy | 23/09/1998 | 23/09/1998 |
| Eutelsat S.A. | France | 29/04/1998 | 30/04/1998 |
| Final Analysis Communications Services, Inc. [[NOT ACTIVE]] | United States of America | 02/06/2003 | 02/06/2003 |
| Final Analysis Inc. [[NOT ACTIVE]] | United States of America | 17/03/1997 | 27/03/1997 |
| Finnish Communications Regulatory Authority (FICORA) | Finland | 03/04/1997 | 03/04/1997 |
| France Télécom Orange | France | 15/05/1997 | 20/05/1997 |
| Global Communication by Satellite (Pty) Ltd. [[NOT ACTIVE]] | South Africa (Republic of) | 12/10/2002 | 15/10/2002 |
| Globalstar, Inc. | United States of America | 03/04/1997 | 03/04/1997 |
| Hitachi, Ltd. | Japan | 22/05/1997 | 29/05/1997 |
| Hughes Network Systems, LLC | United States of America | 15/09/1998 | 16/09/1998 |
| Hyundai Electronics Industries Co.Ltd [[NOT ACTIVE]] | Korea (Republic of) | 04/04/1997 | 04/04/1997 |
| InfoComm Development Authority of Singapore (IDA) | Singapore (Republic of) | 10/06/1998 | 12/06/1998 |
| Information and Communication Technologies Authority (ICTA) | Turkey | 22/06/1998 | 02/07/1998 |
| Inmarsat Plc. | United Kingdom of Great Britain and Northern Ireland | 17/03/1997 | 20/03/1997 |
| Instituto Nacional das Comunicações de Moçambique (INCM) | Mozambique (Republic of) | 04/07/2004 | 27/08/2004 |
| Intelsat, LLC | United States of America | 12/06/1997 | 18/06/1997 |
| International Communications and Information Policy (CIP) | United States of America | 20/03/1997 | 24/03/1997 |
| International Telecommunications Policy and Coordination | Canada | 10/06/1997 | 13/06/1997 |
| Iridium Canada [[NOT ACTIVE]] | Canada | 03/04/1997 | 03/04/1997 |
| Iridium CentroAmérica y México [[NOT ACTIVE]] | Mexico | 15/06/1998 | 15/06/1998 |
| Iridium Communications Inc. | United States of America | 18/04/2001 | 03/05/2001 |
| Iridium Italia S.p.A. [[NOT ACTIVE]] | Italy | 10/04/1997 | 17/04/1997 |
| Iridium Korea Corporation [[NOT ACTIVE]] | Korea (Republic of) | 04/04/1997 | 04/04/1997 |
| Iridium LLC [[NOT ACTIVE]] | United States of America | 26/03/1997 | 02/04/1997 |
| Iridium Sudamerica Corp. [[NOT ACTIVE]] | United States of America | 27/06/1997 | 24/07/1997 |
| KT Corporation | Korea (Republic of) | 04/04/1997 | 04/04/1997 |
| KUMHO Telecom [[NOT ACTIVE]] | Korea (Republic of) | 04/04/1997 | 04/04/1997 |
| KYOCERA Corporation [[NOT ACTIVE]] | Japan | 18/09/1997 | 22/09/1997 |
| Kyushu Matsushita Electronic Co., Ltd [[NOT ACTIVE]] | Japan | 28/01/1998 | 02/02/1998 |
| LeQ. Pty Ltd. [[NOT ACTIVE]] | South Africa (Republic of) | 29/02/2000 | 29/02/2000 |
| Lesotho Communications Authority (LCA) | Lesotho (Kingdom of) | 30/12/1999 | 12/01/2000 |
| Loral Space & Communications Ltd. [[NOT ACTIVE]] | United States of America | 01/04/1997 | 03/04/1997 |
| MCS (ORBCOMM Europe) [[NOT ACTIVE]] | Netherlands (Kingdom of the) | 30/04/1997 | 02/05/1997 |
| Ministère de la Communication et des Nouvelles Technologies de l'Information, chargé des Relations avec les Institutions | Niger (Republic of the) | 02/05/2000 | 15/05/2000 |
| Ministère des Postes et des Nouvelles Technologies de l'Information | Chad (Republic of) | 03/04/1997 | 04/04/1997 |
| Ministère des Postes, Télécommunications et des Nouvelles Technologies | Central African Republic | 05/10/1998 | 07/11/2001 |
| Ministère des Postes, Télécommunications et Nouvelles Technologies de l'Information et de la Communication | Democratic Republic of the Congo | 27/09/2010 | 01/10/2010 |
| Ministère des Technologies de l'Information et de la Communication | Tunisia | 28/07/1997 | 07/08/1997 |
| Ministère des Télécommunications et Nouvelles Technologies de l'Information | Guinea (Republic of) | 02/02/1999 | 05/02/1999 |
| Ministère des Télécommunications | Lebanon | 03/04/1997 | 03/04/1997 |
| Ministère d'Etat | Monaco (Principality of) | 31/07/1997 | 31/07/1997 |
| Ministério dos Transportes e Comunicações | Mozambique (Republic of) | 11/07/2004 | 27/08/2004 |
| Ministry of Communication and Information Technology | Indonesia (Republic of) | 07/04/1997 | 18/04/1997 |
| Ministry of Communications and Information Technologies (MC&IT) | Azerbaijani Republic | 20/07/1998 | 29/07/1998 |
| Ministry of Communications and Information Technology | India (Republic of) | 10/08/2001 | 13/08/2001 |
| Ministry of Communications and Information Technology (MCIT) | Saudi Arabia (Kingdom of) | 27/07/1998 | 13/08/1998 |
| Ministry of Communications and Works | Cyprus (Republic of) | 24/11/1997 | 26/11/1997 |
| Ministry of Communications, Science and Technology | Tanzania (United Republic of) | 03/04/1997 | 03/04/1997 |
| Ministry of Economic Development | Italy | 13/06/1997 | 18/06/1997 |
| Ministry of Economy and Sustainable Development of Georgia | Georgia | 11/03/1998 | 06/04/1998 |
| Ministry of Information and Communications Technology | Zimbabwe (Republic of) | 17/03/1998 | 17/03/1998 |
| Ministry of Information and Communication Technology | Mauritius (Republic of) | 16/10/1998 | 16/10/1998 |
| Ministry of Information | Malawi | 25/05/1998 | 01/06/1998 |
| Ministry of Internal Affairs and Communications | Japan | 30/07/1997 | 31/07/1997 |
| Ministry of Posts and Telecommunications (MPT) | Lao People's Democratic Republic | 10/07/1997 | 24/07/1997 |
| Ministry of Transport and Communication | Armenia (Republic of) | 08/12/1998 | 17/12/1998 |
| Ministry of Transport and Communication | Maldives (Republic of) | 17/02/2000 | 17/02/2000 |
| Ministry of Transport and Communications | Eritrea | 21/10/1998 | 03/11/1998 |
| Ministry of Transport and Communications of the Republic of Kazakhstan | Kazakhstan (Republic of) | 29/05/1998 | 12/06/1998 |
| Mitsubishi Electric Corporation | Japan | 20/06/1997 | 17/07/1997 |
| Motorola Solutions Inc. | United States of America | 27/03/1997 | 01/04/1997 |
| National Broadcasting and Telecommunications Commission (NBTC) | Thailand | 30/12/1998 | 11/01/1999 |
| National Communications Authority (NCA) | Ghana | 04/12/1997 | 17/12/1997 |
| National Frequency Management Unit | Guyana | 05/11/1998 | 10/11/1998 |
| National Information & Communications Technology Authority (NICTA) | Papua New Guinea | 27/03/1998 | 27/08/1998 |
| National Telecommunication Regulatory Authority (NTRA) | Egypt (Arab Republic of) | 24/12/1998 | 06/01/1999 |
| National Telecommunications Corporation (NTC) | Sudan (Republic of the) | 25/04/1999 | 30/04/1999 |
| NEC Corporation | Japan | 26/03/1997 | 02/04/1997 |
| NIPPON Iridium Corporation [[NOT ACTIVE]] | Japan | 05/06/1997 | 09/06/1997 |
| North American Broadcasters Association (NABA) | International (no specific country) | 26/05/1997 | 27/05/1997 |
| Norwegian Post and Telecommunications Authority (NPT) | Norway | 04/04/1997 | 04/04/1997 |
| Odyssey Telecommunications International Inc. (OTI) [[NOT ACTIVE]] | Canada | 21/03/1997 | 21/03/1997 |
| Office fédéral de la communication (OFCOM) | Switzerland (Confederation of) | 10/11/1997 | 13/11/1997 |
| Office Malagasy d'Etudes et de Régulation des Télécommunications (OMERT) | Madagascar (Republic of) | 18/03/1998 | 30/04/1998 |
| Office National des Télécommunications (ONATEL) | Burkina Faso | 06/09/1999 | 23/09/1999 |
| Office of Communications - Ofcom | United Kingdom of Great Britain and Northern Ireland | 09/07/1998 | 09/07/1998 |
| Office of the Communications Authority (OFCA) | Hong Kong, China | 24/04/1998 | 06/05/1998 |
| Oman Telecommunications Company (Omantel) | Oman (Sultanate of) | 20/02/2000 | 04/04/2000 |
| OMNITRONIC S.A. [[NOT ACTIVE]] | Argentine Republic | 08/03/2000 | 09/03/2000 |
| ORBCOMM Andes Caribe, N.V. [[NOT ACTIVE]] | Venezuela (Bolivarian Republic of) | 10/02/2000 | 11/02/2000 |
| ORBCOMM Australia Pacific, Ltd. [[NOT ACTIVE]] | Australia | 14/04/2000 | 17/04/2000 |
| ORBCOMM de México [[NOT ACTIVE]] | Mexico | 25/02/2000 | 06/03/2000 |
| ORBCOMM Global LP [[NOT ACTIVE]] | United States of America | 28/03/1997 | 03/04/1997 |
| ORBCOMM Maghreb [[NOT ACTIVE]] | Morocco (Kingdom of) | 25/05/1998 | 26/05/1998 |
| Post and Telecom Administration | Iceland | 03/01/2002 | 07/01/2002 |
| PT. Asia Cellular Satellite (ACeS) | Indonesia (Republic of) | 04/08/1998 | 04/08/1998 |
| Qualcomm, Inc. | United States of America | 11/01/1999 | 08/02/1999 |
| Samsung Electronics Co., Ltd. | Korea (Republic of) | 04/04/1997 | 04/04/1997 |
| Satellite Phone Japan Ltd. [[NOT ACTIVE]] | Japan | 18/06/1997 | 17/07/1997 |
| Satphone International Limited [[NOT ACTIVE]] | United Kingdom of Great Britain and Northern Ireland | 05/03/1997 | 07/03/1997 |
| Secretaría de Comunicaciones (SECOM) | Argentine Republic | 10/09/1997 | 10/09/1997 |
| Sierra Leone Telecommunications Co. (SIERRATEL) | Sierra Leone | 23/10/1998 | 23/10/1998 |
| Síminn (Iceland Telecom Ltd.) | Iceland | 28/01/1998 | 02/02/1998 |
| Sistem Iridium Malaysia Sdn Bhd [[NOT ACTIVE]] | Malaysia | 02/09/1998 | 04/09/1998 |
| SkyBridge LP [[NOT ACTIVE]] | United States of America | 04/04/1997 | 04/04/1997 |
| State Committee for Communication, Informatization and Telecommunication Technologies of the Republic of Uzbekistan | Uzbekistan (Republic of) | 25/09/1998 | 13/11/1998 |
| State Communications Agency under the Government of the Kyrgyz Republic | Kyrgyz Republic | 14/07/1999 | 15/07/1999 |
| Subsecretaría de Telecomunicaciones | Chile | 07/12/1998 | 15/12/1998 |
| Superintendencia General de Electricidad y Telecomunicaciones (SIGET) | El Salvador (Republic of) | 05/12/1997 | 17/12/1997 |
| Swedish Post and Telecom Authority (PTS) | Sweden | 16/03/1998 | 19/03/1998 |
| Syrian Telecom (ST) | Syrian Arab Republic | 01/12/1997 | 08/12/1997 |
| SYSTEL [[NOT ACTIVE]] | Egypt (Arab Republic of) | 05/10/1998 | 06/10/1998 |
| Telecom Italia Mobile S.p.A. (TIM) [[NOT ACTIVE]] | Italy | 09/06/1997 | 18/06/1997 |
| Telecommunication Industry Association (TIA) | United States of America | 14/03/1997 | 20/03/1997 |
| Telecommunications Regulatory Commission (TRC) | Jordan (Hashemite Kingdom of) | 19/10/1998 | 13/11/1998 |
| Telecom Vanuatu Limited | Vanuatu (Republic of) | 23/03/1999 | 13/04/1999 |
| Teledesic LLC [[NOT ACTIVE]] | United States of America | 07/04/1997 | 18/04/1997 |
| Telefónica del Perú S.A.A. | Peru | 30/10/1997 | 04/11/1997 |
| Telenor ASA | Norway | 04/05/1997 | 12/05/1997 |
| Telespazio S.p.A. | Italy | 11/04/1997 | 17/04/1997 |
| TELITAL Mobile Terminals S.p.A. [[NOT ACTIVE]] | Italy | 31/08/1999 | 02/09/1999 |
| Thai Satellite Telecommunications Co., Ltd [[NOT ACTIVE]] | Thailand | 05/08/1997 | 14/08/1997 |
| Thrane & Thrane Norge AS [[NOT ACTIVE]] | Norway | 19/04/1999 | 27/04/1999 |
| Thuraya Satellite Telecommunications [[NOT ACTIVE]] | United Arab Emirates | 20/05/1998 | 26/05/1998 |
| Townley Communications Ltd. [[NOT ACTIVE]] | United Kingdom of Great Britain and Northern Ireland | 24/03/1997 | 25/03/1997 |
| UER (EUROPEENNE DE RADIO-TELEVISION) [[NOT ACTIVE]] | Switzerland (Confederation of) | 09/05/1997 | 09/05/1997 |
| Uganda Communications Commission (UCC) | Uganda (Republic of) | 20/07/1998 | 04/08/1998 |
| Unidad Reguladora de Servicios de Comunicaciones (URSEC) | Uruguay (Eastern Republic of) | 10/06/1997 | 10/06/1997 |
| VULA Communications [[NOT ACTIVE]] | South Africa (Republic of) | 23/05/1998 | 27/05/1998 |
| Zambia Information & Communications Technology Authority (ZICTA) | Zambia (Republic of) | 17/07/2002 | 02/09/2002 |
| ZanTel (Zanzibar Telecom Ltd.) [[NOT ACTIVE]] | Ireland | 25/09/1997 | 06/10/1997 |
