| ASI (Centro di Geodesia Spaziale G. Colombo, Matera) |
| BEK (Kommission für Erdmessung und Glaziologie (Bayerische Akademie der Wissenschaften), Munich) |
| BEV (Federal Office of Metrology and Surveying Austria) |
| BKG (Bundesamt für Kartographie und Geodäsie) |
| COE (Centre for Orbit Determination in Europe, Astronomical Institute of the University of Bern) |
| DEO (Delft Institute for Earth-Oriented Space Research, Delft)* |
| GOP (Geodetic Observatory Pecny, Research Inst. of Geodesy, Topography and Cartography)* |
| IGE (Instituto Geográfico Nacional de España) |
| IGN (Institut Géographique National) |
| LPT (Federal Office of Topography swisstopo, Wabern) |
| MUT (Military University of Technology) |
| NKG (Nordic Geodetic Commission, Lantmäteriet and Onsala Space Observatory) |
| OLG (Institute for Space Research (ISR/ASS), Graz)* |
| RGA (Republic Geodetic Authority) |
| ROB (Royal Observatory of Belgium, Brussels) |
| SGO (FOMI Satellite Geodetic Observatory, Budapest) |
| SUT (Slovak University of Technology, Bratislava) |
| UPA (University of Padova, Padova) |
| WUT (Warsaw University of Technology, Warsaw) |
| ASI (Centro di Geodesia Spaziale G. Colombo, Matera) |
| BEK (Kommission für Erdmessung und Glaziologie (Bayerische Akademie der Wissenschaften), Munich) |
| BKG (Bundesamt für Kartographie und Geodäsie) |
| DEO (Delft Institute for Earth-Oriented Space Research, Delft) |
| GOP (Geodetic Observatory Pecny, Research Inst. of Geodesy, Topography and Cartography) |
| IGE (Instituto Geográfico Nacional de España) |
| IGN (Institut Géographique National) |
| LPT (Federal Office of Topography swisstopo, Wabern) |
| MUT (Military University of Technology) |
| NKG (Nordic Geodetic Commission, Lantmäteriet and Onsala Space Observatory) |
| OLG (Institute for Space Research (ISR/ASS), Graz) |
| ROB (Royal Observatory of Belgium, Brussels) |
| SGO (FOMI Satellite Geodetic Observatory, Budapest) |
| SUT (Slovak University of Technology, Bratislava) |
| UPA (University of Padova, Padova) |
| WUT (Warsaw University of Technology, Warsaw) |
| AGG (University of Rome 'La Sapienza') |
| AGH (AGH University of Science and Technology) |
| ARA (ARANZADI Society of Sciences) |
| ASGEUPOS (ASG-EUPOS Management Center) |
| ASI (Agenzia Spaziale Italiana) |
| BEV (Federal Office of Metrology and Surveying Austria) |
| BKG (Bundesamt fuer Kartographie und Geodaesie) |
| BMEDGS (Budapest University of Technology and Economics) |
| CISAS (Università di Padova) |
| CNES (Centre National d'Etudes Spatiales) |
| CRS (Centro di Ricerche Sismologiche - Istituto Nazionale di) |
| DGS (Aristotle University of Thessaloniki) |
| DGT (Direcao-Geral do Territorio) |
| DIASS (Politecnico di Bari) |
| DICA (Politecnico di Milano) |
| DICAAR (University of Cagliari) |
| DIEF (University of Modena and Reggio Emilia) |
| DNSC (Danish National Space Center) |
| DSCIG (Direccao de Servicos de Cartografia e Informacao ) |
| DUT (Delft University of Technology) |
| ELB (Estonian Land Board) |
| ENDIF (University of Ferrara) |
| ESOC (European Space Agency) |
| ESSP (European Satellite Services Provider S.A.S.) |
| FGI (National Land Survey of Finland) |
| FSW (Bundesamt fuer Kartograhie und Geodaesie) |
| GCM (General Directorate of Mapping) |
| GDFCE (Geodesy Department-Faculty of Civil Engineerig) |
| GFZ (Helmhotz-Zentrum Potsdam) |
| GKU (Geodetic and Cartographic Institute Bratislava) |
| GOP (Geodetic Observatory Pecny, RIGTC) |
| IAA (Institute of Applied Astronomy) |
| ICGC (Institut Cartografic i Geologic de Catalunya) |
| ICV (Cartographic Institute of Valencia) |
| IESSG (University of Nottingham) |
| IGD (IGD GROUP AE) |
| IGE (Instituto Geografico Nacional de Espana) |
| IGG (Institute of Geodesy and Geoinformatics,) |
| IGIK (Institute of Geodesy and Cartography) |
| IGMI (Italian Military Geographic Institute) |
| IGN_RGP (Institut National de l'Information Géographique et ) |
| IMVP (Institute of Metrology for Time and Space) |
| INGEOCAD (State Enterprise Institute of Geodesy, Engineering ) |
| INRIM (Istituto Nazionale di Ricerca Metrologica) |
| INSU (Institut National des Sciences de l'Univers) |
| IRSM (Academy of Sciences of the Czech Republic) |
| ITACYL (Instituto Tecnologico Agrario de Castilla y Leon) |
| ITCG (Istituto Tecnico Commerciale e per Geometri) |
| JPL (Jet Propulsion Laboratory) |
| KMS (National survey and cadastre, Denmark) |
| LGIA (Latvian Geospatial Information Agency) |
| LIENSS (La Rochelle University) |
| LINZAG (Managementservice Linz GmbH) |
| LMV (Lantmateriet, the Swedish mapping, cadastral and) |
| LPT (Swiss Federal Office of Topography (swisstopo)) |
| LUAI (Institute of Astronomy University of Latvia) |
| MAO (Main Astronomical Observatory of the National Academy ) |
| NACLR (National Agency for Cadastre and Land Registration) |
| NCL (Newcastle University) |
| NMA (Norwegian Mapping and Cadastre Authority) |
| NOA (National Observatory of Athens) |
| NSGF (NERC Space Geodesy Facility) |
| NULP (National University "Lviv Polytechnic") |
| OS (Ordnance Survey Limited) |
| OSI (Ordnance Survey Ireland) |
| OSNI (Ordnance Survey of Northern Ireland) |
| OSUG (Observatoire des Sciences de l'Univers de Grenoble ) |
| PLK (Pulkovo Observatory) |
| POLITO (Politecnico di Torino) |
| RGZ (Republicki Geodetski Zavod) |
| ROA (Real Instituto y Observatorio de la Armada) |
| ROB (Royal Observatory of Belgium) |
| SGA (State Geodetic Administration) |
| SGO (BFKH FTFF Satellite Geodetic Observatory) |
| SMA (Surveying and mapping authority of Slovenia) |
| SOI (Survey Of Israel) |
| SRCPAS (Astrogeodynamical Observatory) |
| STPOS (Autonome Provinz Bozen - Sudtirol) |
| SUT (Slovak University of Technology) |
| TUBITAK (TUBITAK Marmara Research Center) |
| TUC (Technical University of Crete) |
| UNAVCO (University NAVSTAR Consortium) |
| UNIBO (University of Bologna) |
| UNIFI (University of Florence) |
| UNPG (University of Perugia) |
| UWM (University of Warmia and Mazury in Olsztyn) |
| VGTUGI (Geodetic Institute of Vilnius TU) |
| WUT (Warsaw University of Technology) |
| YTU (Yildiz Technical University) |
| ZU (Land Survey Office) |
| AGG (University of Rome 'La Sapienza') |
| AGH (AGH University of Science and Technology) |
| ARA (ARANZADI Society of Sciences) |
| ASGEUPOS (ASG-EUPOS Management Center) |
| ASI (Agenzia Spaziale Italiana) |
| BEV (Federal Office of Metrology and Surveying Austria) |
| BIGF (British Isles Continuous GNSS Facility) |
| BKG (Bundesamt fuer Kartographie und Geodaesie) |
| BMEDGS (Budapest University of Technology and Economics) |
| CANT (Gobierno de Cantabria) |
| CAR (Gobierno de La Rioja) |
| CCPA (Centro de Cartografia del Principado de Asturias) |
| CISAS (Università  di Padova) |
| CNES (Centre National d'Etudes Spatiales) |
| CRS (Centro di Ricerche Sismologiche - Istituto Nazionale di) |
| DGS (Aristotle University of Thessaloniki) |
| DGT (Direcao-Geral do Territorio) |
| DIASS (Politecnico di Bari) |
| DICA (Politecnico di Milano) |
| DICAAR (University of Cagliari) |
| DIEF (University of Modena and Reggio Emilia) |
| DNSC (Danish National Space Center) |
| DSCIG (Direccao de Servicos de Cartografia e Informacao ) |
| DSIGC (Secretaria Regional do Ambiente - Direcao de ) |
| DSO (Dionysos Satellite Observatory) |
| DUT (Delft University of Technology) |
| ELB (Estonian Land Board) |
| ENDIF (University of Ferrara) |
| EOST (Ecole et Observatoire des Sciences de la Terre) |
| ESOC (European Space Agency) |
| FGI (National Land Survey of Finland) |
| FSW (Bundesamt fuer Kartograhie und Geodaesie) |
| GCM (General Directorate of Mapping) |
| GDFCE (Geodesy Department-Faculty of Civil Engineerig) |
| GFZ (Helmhotz-Zentrum Potsdam) |
| GKU (Geodetic and Cartographic Institute Bratislava) |
| GOP (Geodetic Observatory Pecny, RIGTC) |
| GVEJ (Gobierno Vasco - Eusko Jaurlaritza) |
| IAA (Institute of Applied Astronomy) |
| ICGC (Institut Cartografic i Geologic de Catalunya) |
| ICV (Cartographic Institute of Valencia) |
| IECA (Instituto de Estadistica y Cartografia de Andalucia) |
| IESSG (University of Nottingham) |
| IGD (IGD GROUP AE) |
| IGE (Instituto Geografico Nacional de Espana) |
| IGEAR (Instituto Geografico de Aragon) |
| IGG (Institute of Geodesy and Geoinformatics,) |
| IGIK (Institute of Geodesy and Cartography) |
| IGMI (Italian Military Geographic Institute) |
| IGN_RGP (Institut National de l'Information Géographique et ) |
| IMVP (Institute of Metrology for Time and Space) |
| INGEOCAD (State Enterprise Institute of Geodesy, Engineering ) |
| INGV (Istituto Nazionale di Geofisica e Vulcanologia) |
| INRIM (Istituto Nazionale di Ricerca Metrologica) |
| INSU (Institut National des Sciences de l'Univers) |
| IRSM (Academy of Sciences of the Czech Republic) |
| ITACYL (Instituto Tecnologico Agrario de Castilla y Leon) |
| ITCG (Istituto Tecnico Commerciale e per Geometri) |
| JPL (Jet Propulsion Laboratory) |
| KMS (National survey and cadastre, Denmark) |
| LGIA (Latvian Geospatial Information Agency) |
| LIENSS (La Rochelle University) |
| LINZAG (Managementservice Linz GmbH) |
| LMV (Lantmateriet, the Swedish mapping, cadastral and) |
| LPT (Swiss Federal Office of Topography (swisstopo)) |
| LUAI (Institute of Astronomy University of Latvia) |
| MAO (Main Astronomical Observatory of the National Academy ) |
| NACLR (National Agency for Cadastre and Land Registration) |
| NCL (Newcastle University) |
| NMA (Norwegian Mapping and Cadastre Authority) |
| NOA (National Observatory of Athens) |
| NSGF (NERC Space Geodesy Facility) |
| NULP (National University "Lviv Polytechnic") |
| OCA (Observatoire de la Côte d'Azur) |
| OMP (Observatoire Midi-Pyrenees) |
| OPGC (Observatoire de Physique du Globe de Clermont-Ferrand) |
| OREME (Observatoire de Recherche Mediterraneen de ) |
| OS (Ordnance Survey Limited) |
| OSI (Ordnance Survey Ireland) |
| OSNI (Ordnance Survey of Northern Ireland) |
| OSUG (Observatoire des Sciences de l'Univers de Grenoble ) |
| OSUR (Observatoire des Sciences de l'Univers de Rennes) |
| PLK (Pulkovo Observatory) |
| POLITO (Politecnico di Torino) |
| REGAM (Red Geodesica Activa de la Region de Murcia) |
| REP (Red ExtremeNa de Posicionamiento) |
| RGZ (Republicki Geodetski Zavod) |
| ROA (Real Instituto y Observatorio de la Armada) |
| ROB (Royal Observatory of Belgium) |
| SCGN (Seccion de Cartografia del Gobierno de Navarra) |
| SGA (State Geodetic Administration) |
| SGO (BFKH FTFF Satellite Geodetic Observatory) |
| SMA (Surveying and mapping authority of Slovenia) |
| SOI (Survey Of Israel) |
| SRCPAS (Astrogeodynamical Observatory) |
| STPOS (Autonome Provinz Bozen - Sudtirol) |
| SUT (Slovak University of Technology) |
| THETA (Observatoire des Sciences de l'Univers ) |
| TUBITAK (TUBITAK Marmara Research Center) |
| TUC (Technical University of Crete) |
| UNAVCO (University NAVSTAR Consortium) |
| UNIBO (University of Bologna) |
| UNIFI (University of Florence) |
| UNPG (University of Perugia) |
| UWM (University of Warmia and Mazury in Olsztyn) |
| VGTUGI (Geodetic Institute of Vilnius TU) |
| WUT (Warsaw University of Technology) |
| YTU (Yildiz Technical University) |
| ZU (Land Survey Office) |
