| AAE | Geophysical Observatory, Adis Abeba University, Ethiopia |
| AAM | University of Michigan, Ann Arbor, USA |
| ACI | Universita di Calabria, Cosenza, Italy |
| ADE | Primary Industries and Resources SA, Adelaide, Australia |
| AGS | USGS Alaska Seismic Project, Menlo Park, California, USA |
| ALG | CNAAG, Alger-Bouzareah, Algeria |
| ALQ | USGS Albuquerque Seismological Laboratory, Albuquerque, New Mexico, USA |
| ANZA | Anza Seismic Network, IGPP, UC San Diego, La Jolla, Calif, USA |
| ARO | Observatoire Geophysique d'Arta, Djibouti |
| ASRS | GSRAS Siberian Branch, Altay-Sayan Reg. Seis. Ctr., Novosibirsk, Russia |
| ATH | National Observatory of Athens, Greece |
| ATL | Georgia Institute of Technology, Atlanta, USA |
| ATX | University of Texas Institute for Geophysics, Austin, USA |
| AUST | Australian Geological Survey Organization, Canberra, Australia |
| AWIB | Alfred Wegener Inst. of Polar and Marine Research, Bremerhaven, Germany |
| AZER | Institute of Geology, Azerbaijan Academy of Science, Baki, Azerbaijan |
| BASV | British Antarctic Survey, Cambridge, England, UK |
| BDF | Observatorio Sismologico, Universidade de Brasilia, Brazil |
| BELR | Inst. of Geochemistry and Geophysics, Belarus Academy of Science, Minsk |
| BEO | Seismological Survey of Serbia, Belgrade, Yugoslavia |
| BER | Seismological Observatory, University of Bergen, Norway |
| BGRD | Bundesanstalt fuer Geowissenschaften und Rohstoffe, Hannover, Germany |
| BGS | British Geological Survey, Edinburgh, Scotland, UK |
| BHD | Seismology Unit, Scientific Research Council, Baghdad, Iraq |
| BHKY | University of Kentucky, Lexington, USA |
| BJI | Institute of Geophysics, State Seismological Bureau, Beijing, China |
| BKK | Meteorological Department, Bangkok, Thailand |
| BKN | Procurement Executive, Ministry of Defence, Blacknest, England, UK |
| BLA | Virginia Polytechnic Institute and State University, Blacksburg, USA |
| BLMY | Indian Point Network, Woodward-Clyde Consultants, New Jersey, USA |
| BLO | |
| BMU | Bahrain Meteorological Service, Bahrain |
| BNG | Inst. de Recherche pour le Developpement, Bangui, Central African Rep. |
| BNS | Geologisches Inst. der Universitaet Koeln, Bergisch Gladbach, Germany |
| BOG | Instituto Geofisico, Universidad Javeriana, Bogota, Colombia |
| BOU | University of Colorado, Boulder, USA |
| BRA | Geofyzikalny ustav SAV, Bratislava, Slovakia |
| BRK | University of California, Berkeley, USA |
| BRL | Freie Universitaet Berlin, Berlin, Germany |
| BRS | University of Queensland, Brisbane, Australia |
| BSE | Boise State University, Idaho, USA |
| BUC | National Institute for Earth Physics, Bucharest-Magurele, Romania |
| BUD | Hungarian Seismological Institute, Budapest, Hungary |
| BUG | Ruhr-Universitaet, Bochum, Germany |
| BUL | Goetz Observatory, Bulawayo, Zimbabwe |
| BUT | Montana Bureau of Mines and Geology, Butte, USA |
| BYKL | GSRAS Siberian Branch, Baykal Regional Seis. Center, Irkutsk, Russia |
| BYT | Central Institute of Mines, Katowice, Poland |
| CAM | Massachusetts Institute of Technology, Cambridge, USA |
| CAN | Australian National University, Canberra, Australia |
| CAR | FUNVISIS, Caracas, Venezuela |
| CAT | Istituto Scienze della Terra, Catania, Italy |
| CDMG | California Division of Mines and Geology, Sacramento, USA |
| CDPJ | Nat. Research Center for Disaster Prevention, Ibaraki-ken, Japan |
| CDR | Commissariat a l'Energie Atomique (CEA), Fontenay aux Roses, France |
| CDWR | California Department of Water Resources, Sacramento, USA |
| CELS | Comision Hidroelectrica del Rio Lempa, El Salvador |
| CERI | Center for Earthquake Research and Information, Memphis, Tennessee, USA |
| CFF | Inst. et Observatoire de Physique du Globe, Clermont-Ferrand, France |
| CHC | University of North Carolina, Chapel Hill, USA |
| CIG | Centro de Investigaciones Geotecnicas, San Salvador, El Salvador |
| CLE | John Carroll University, Cleveland, Ohio, USA (closed) |
| CLTN | GSC Charlevoix Local Telemetered Network, Ottawa, Canada |
| CMWS | |
| CNRM | Centre National de la Recherche Scient. et Tech., Rabat, Morocco |
| COR | College of Oceanography, Oregon State University, Corvallis, USA |
| CRT | Universidad de Granada, Spain |
| CSC | University of South Carolina, Columbia, USA |
| CSS | |
| CU | |
| DAL | Southern Methodist University, Dallas, Texas, USA |
| DBN | Koninkijk Nederlands Meteorologisch Instituut, De Bilt, Netherlands |
| DDA | Directorate of Disaster Affairs, Lodumlu, Ankara, Turkey |
| DGAR | |
| DHMR | National Seismological Observatory Center, Dhamar, Yemen |
| DIAS | Dublin Institute for Advanced Studies, Ireland |
| DJA | Lembaga Meteorologi dan Geofisika, Jakarta, Indonesia |
| DMN | Department of Mines and Geology, Kathmandu, Nepal |
| DNK | KMS, Geodaetisk Seismisk Afdeling, Copenhagen, Denmark |
| DRI | Disaster Prevention Research Institute, Kyoto University, Japan |
| DRS | GSRAS, Dagestan Regional Seismological Center, Makhachkala, Russia |
| DSIT | State Water Works Division (DSI), Ankara, Turkey |
| DTM | Carnegie Institution of Washington, Washington DC, USA |
| DUKE | Duke Power Company, South Carolina, USA |
| ECTN | GSC Eastern Canada Telemetered Network, Ottawa, Canada |
| ECX | RESNOM, CICESE, Ensenada, Baja California, Mexico |
| EDM | University of Alberta, Edmonton, Canada |
| EFI | |
| ENI | Ente Nazionale Idrocarburi, Italy |
| EPT | Kidd Seismological Observatory, University of Texas, El Paso, USA |
| ERC | Centro Ettore Majorana, Erice, Italy |
| ERIJ | Earthquake Research Institute, Univ. of Tokyo, Japan |
| EUO | Department of Geological Sciences, University of Oregon, Eugene, USA |
| FBB | Geologisches Landesamt Baden-Wuerttemberg (LEDBW), Freiburg, Germany |
| FDF | IPG Observatoire Geophysique, St. Pierre, Martinique |
| FLAG | Arizona Earthquake Information Center, Flagstaff, USA |
| FOG | Osservatorio V. Nigri, Foggia, Italy |
| FUR | Geophysikalisches Obs. der Univ. Munchen, Furstenfeldbruck, Germany |
| GAR | Complex Seismological Expedition, Garm, Tajikistan |
| GBZT | TUBITAK, Marmara Research Center, Gebze, Turkey |
| GCG | INSIVUMEH, Guatemala City, Guatemala |
| GEN | Dipart. Studio del Territorio e Risorse, Universita di Genova, Italy |
| GEOT | Teledyne Geotech Corporation, Garland, Texas, USA |
| GFU | Geofyzikalni ustav Akademie vid Ceske republiky, Praha, Czech Republic |
| GIA | Geophysical Institute, University of Alaska, Fairbanks, USA |
| GII | Geophysical Institute of Israel, Holon, Israel |
| GO | |
| GOL | Geophysics Department, Colorado School of Mines, Golden, Colorado, USA |
| GOM | Observatoire Volcanologique de Goma, Goma, Congo (Kinshasa) |
| GRF | BGR, Zentralobservatorium Graefenberg, Erlangen, Germany |
| GRN | IRIGM, Lab. de Geophysique Interne et Tectonophys., Grenoble, France |
| GUC | Departamento de Geologia y Geofisica, Univ. de Chile, Santiago, Chile |
| GUV | CVG Electrificacion del Caroni (EDELCA), Guri, Venezuela |
| HDC | Universidad Nacional, Campus Omar Dengo, Heredia, Costa Rica |
| HEL | Institute of Seismology, University of Helsinki, Finland |
| HFS | National Defence Research Institute, Stockholm, Sweden |
| HIG | Hawaii Institute of Geophysics, Honolulu, USA |
| HKC | Hong Kong Observatory, Kowloon, Hong Kong, China |
| HKT | University of Texas Marine Science Institute, Galveston, USA (now ATX) |
| HLW | National Research Institute of Astronomy and Geophysics, Helwan, Egypt |
| HNR | Ministry of Natural Resources, Honiara, Solomon Islands |
| HON | NOAA, Pacific Tsunami Warning Center, Honolulu, Hawaii, USA |
| HRS | Hirosaki University, Japan |
| HSS | Hokkaido University, Sapporo, Japan |
| HVO | USGS Hawaiian Volcano Observatory, Hawaii, USA |
| HYB | National Geophysical Research Institute, Hyderabad, India |
| ICE | Instituto Costariccense de Electricidad, San Jose, Costa Rica |
| IDC | International Data Centre of Prepapatory Commission for CTBTO, Vienna, Austria |
| IGIL | Instituto Geofisico do Infante D. Luis, Univ. de Lisboa, Portugal |
| IIM | Instituto de Ingenieria, UNAM, Mexico City, Mexico |
| INDR | Inst. Nacional de Recursos Hidraulicos, Santo Domingo, Dominican Rep. |
| INEL | Idaho Nat. Engineering and Environmental Lab., Idaho Falls, Idano, USA |
| INET | Instituto Nicaraguense de Estudios Territoriales, Managua, Nicaragua |
| INMG | Instituto de Meteorologia, Lisbon, Portugal |
| INPP | Ignalina Nuclear Power Plant, Ignalina, Lithuania |
| INTV | INTEVEP, Caracas, Venezuela |
| INY | Cornell University, Ithaca, New York, USA |
| IPEC | Ustav fyziky Zeme, Masaryk University, Brno, Czech Republic |
| IRIS-IDA | |
| ISK | Kandilli Observatory and Earthquake Research Inst., Istanbul, Turkey |
| IST | Technical Univ. of Istanbul, Tesvikiye, Istanbul, Turkey |
| ISTP | Instituto Superior Tecnico, Lisbon, Portugal |
| JCK | Geologisches Landesamt Nordrhein-Westfalen, Krefeld, Germany |
| JEN | Inst. fur Geowissenschaften, Friedrich-Schiller-Univ., Jena, Germany |
| JHI | Regional Research Laboratory, Jorhat, India |
| JMA | Japan Meteorological Agency, Tokyo, Japan |
| JSN | Jamaica Seismograph Network, Univ. of the West Indies, Mona, Jamaica |
| JSO | Jordan Seismological Observatory, Amman |
| KAZK | Seismological Institute, Kazakhstan Academy of Sciences, Almaty |
| KBC | Institute de Recherches Geologiques et Minieres, Kumba, Cameroon |
| KBL | |
| KGS | Kansas Geological Survey, University of Kansas, Lawrence, USA |
| KIEV | |
| KISR | Kuwait Institute for Scientific Research, Safat, Kuwait |
| KLM | Malaysian Meteorological Service, Petaling Jaya, Selangor, Malaysia |
| KORS | GSRAS, Kola Regional Seismological Center, Apatity, Russia |
| KRAR | |
| KRNET | |
| KRSC | GSRAS, Kamchatka Regional Seismological Center, Petropavlovsk, Russia |
| KRW | Geophysikalisches Institut, Karlsruhe, Germany |
| KRYM | Crimean Geophysical Institute, Simferopol |
| KUK | Ghana Geological Survey Department, Accra, Ghana |
| KWAJ | |
| KYRG | Institute of Seismology, Kyrgyzstan Academy of Sciences, Bishkek |
| KYT | Faculty of Science, Kyoto University, Japan |
| LASA | Large Aperture Seismic Array, Billings, Montana, USA (closed) |
| LDG | CEA Lab. de Detection et de Geophysique, Bruyeres-le-Chatel, France |
| LDN | University of Western Ontario, London, Ontario, Canada |
| LGS | Lithuanian Geological Survey, Vilnius, Lithuania |
| LIC | Station Geophysique de Lamto, Cote d'Ivoire |
| LIM | Instituto Geofisico del Peru, Lima, Peru |
| LJC | Inst. of Geop. and Planet. Phys., UC San Diego, La Jolla, Calif, USA |
| LJU | ARSO, Urad za seizmologijo, Ljubljana, Slovenia |
| LLI | Istituto Internazionale di Vulcanologia--CNR, Catania, Italy |
| LMM | Servico Meteorologico de Mocambique, Maputo, Mozambique |
| LOA | Los Alamos Scientific Laboratories, Los Alamos, New Mexico, USA |
| LPA | Observatorio Astronomico, Universidad Nacional de La Plata, Argentina |
| LPZ | Observatorio San Calixto, La Paz, Bolivia |
| LRSM | Long Range Seismic Monitoring Network, Garland, Texas, USA (closed) |
| LSZ | Geological Survey Department, Lusaka, Zambia |
| LUB | Texas Tech University, Lubbock, USA |
| LVM | Lawrence Livermore National Laboratory, Livermore, California, USA |
| LVV | Carpathian Seismo. Dept., Ukraine Academy of Science, Lviv, Ukraine |
| LWI | Departement de Geophysique, Lwiro, Congo (Kinshasa) |
| MAUI | |
| MBAR | |
| MBO | Institut de Recherche pour le Developpement, M'Bour, Senegal |
| MDD | Instituto Geografico y Catastral, Madrid, Spain |
| MDV | Middlebury College, Middlebury, Vermont, USA |
| MEL | Seismology Research Centre, Bundoora (Melbourne), Australia |
| MES | Istituto Geofisico e Geodetico, Messina, Italy |
| MEX | RESMAC, IIMAS-UNAM, Mexico City, Mexico (now part of UNM network) |
| MNLO | USGS National Center for Earthquake Research, Menlo Park, Calif, USA |
| MNM | University of Minnesota, Minneapolis, USA |
| MOLD | Institute of Geophysics and Geology, Chisinau, Moldova |
| MRB | Institut Cartografic de Catalunya (ICC), Barcelona, Spain |
| MSEY | |
| MSO | University of Montana, Missoula, USA |
| MTAT | Mineral Research and Exploration Institute (MTA), Ankara, Turkey |
| MUI | Geophysics Department, Ferdowsi University, Mashhad, Iran |
| MVOV | Montserrat Volcano Observatory, Mango Hill, Montserrat |
| NAI | Geology Department, University of Nairobi, Nairobi, Kenya |
| NAO | NTNF/NORSAR, Kjeller, Norway |
| NARS | NARS network, University of Utrecht, The Netherlands |
| NAT | |
| NDI | India Meteorological Department, New Delhi, India |
| NED | Delaware Geological Survey, Newark, USA |
| NEIC | USGS Nat. Earthquake Information Center, Golden, USA (and predecessors) |
| NERS | GSRAS, Northeastern Regional Seismological Center, Magadan, Russia |
| NGY | Nagoya University, Japan |
| NIC | Geological Survey Department, Nicosia, Cyprus |
| NNC | Nat. Nuclear Center, Inst. of Geophysical Research, Semey, Kazakhstan |
| NORS | North-Osetia Branch of Geophysical Surrvey RAS |
| NOU | Institut de Recherche pour le Developpement, Noumea, New Caledonia |
| NSSC | National Syrian Seismological Center, Damascus, Syria |
| NSSP | National Survey of Seismic Protection, Yerevan, Armenia |
| OBM | Mongolian Academy of Sciences, Ulaanbaatar, Mongolia |
| OBN | GSRAS, Russian National Seismological Center, Obninsk, Russia |
| OGSO | OhioSeis Network, Ohio Geological Survey, Columbus, Ohio, USA |
| OMAN | Department of Earth Sciences, Sultan Qaboos University, Al-Khod, Oman |
| OMPT | Observatoire Midi-Pyrenees, Toulouse, France |
| OTT | Geological Survey of Canada, Ottawa, Canada |
| OTTR | Geological Survey of Canada Regional Stations, Ottawa, Canada |
| OVO | Osservatorio Vesuviano, Naples, Italy |
| PAL | Lamont-Doherty Earth Observatory, Palisades, New York, USA |
| PALK | |
| PAR | Institut de Physique du Globe, Univ. P & M Curie, Paris, France |
| PAS | USGS/CalTech, California Institute of Technology, Pasadena, USA |
| PDA | Instituto de Meteorologia, Obs. Afonso Chaves, Ponta Delgada, Azores |
| PDG | Seizmoloski zavod Crne Gore, Podgorica, Montenegro, Yugoslavia |
| PEPP | Princeton Earth Physics Project, Princeton, New Jersey, USA |
| PINS | Pakistan Inst. of Nuclear Science and Technology, Rawalpindi, Pakistan |
| PIVS | Philippine Inst. of Volcanology & Seismology, Quezon City, Philippines |
| PLV | National Center for Scientific Research, Hanoi, Vietnam |
| PMG | Geological Survey, Port Moresby, Papua New Guinea |
| PMR | NOAA, Alaska Tsunami Warning Center, Palmer, USA |
| PNNL | Pacific Northwest National Laboratory, Richland, Washington, USA |
| POLR | POLARIS Project, Ottawa, Canada |
| PPT | Laboratoire de Geophysique, Papeete, French Polynesia |
| PRE | Council for Geoscience, Pretoria, South Africa |
| PRT | Osservatorio San Domenico, Prato, Italy |
| PRU | |
| PSNT | Public Seismic Network - PSN (homepage: www.seismicnet.com) |
| PTN | State University of New York, Potsdam, New York, USA |
| QCP | Manila Observatory, Ateneo de Manila University, Manila, Philippines |
| QDM | Queensland Department of Mines, Brisbane, Australia |
| QMB | University of Leeds, Yorkshire, England, UK |
| QUE | Pakistan Meteorological Department, Quetta, Pakistan |
| QUI | Escuela Politecnica Nacional, Quito, Ecuador |
| RAB | Geological Survey, Vulcanological Observatory, Rabaul, Papua New Guinea |
| RDJ | Observatorio Nacional, Rio de Janeiro, Brazil |
| REN | University of Nevada, Reno, USA |
| REX | Ricks College, Rexburg, Idaho, USA |
| REY | Vedurstofa Islands, Reykjavik, Iceland |
| RMOD | Russian Ministry of Defense, Russia |
| ROM | Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy |
| RSNC | Red Sismica Nacional de Colombia, INGEOMINAS, Bogota, Colombia |
| RSPR | Red Sismica de Puerto Rico, Universidad de Puerto Rico, Mayaguez |
| RUVS | Rede Universitaria de Vigilancia Sismovulcanica, Sao Miguel, Azores |
| RYD | King Saud University, Riyadh, Saudi Arabia |
| SAKL | Sakhalin Complex Research Institute, Novoalexandrovsk -- now SKHL net |
| SAN | |
| SAND | Sandia Laboratories, Albuquerque, New Mexico, USA |
| SBS | Institut National de la Meteorologie, Sidi Bou Said, Tunisia |
| SCP | Pennsylvania State University, State College, USA |
| SDD | Universidad Autonoma de Santo Domingo, Dominican Republic |
| SEA | Geophysics Program, University of Washington, Seattle, USA |
| SFS | Real Instituto y Observatorio de la Armada, San Fernando, Spain |
| SHEL | |
| SHV | Kyushu University, Japan |
| SJA | Instituto Nacional de Prevencion Sismica, San Juan, Argentina |
| SKHL | GSRAS, Sakhalin Regional Seismological Ctr., Yuzhno-Sakhalinsk, Russia |
| SKO | Seismological Observatory, Skopje University, F.Y.R. of Macedonia |
| SLC | University of Utah, Salt Lake City, USA |
| SLCI | University of Utah Research Institute, Salt Lake City, USA |
| SLM | St. Louis University, St. Louis, Missouri, USA |
| SNM | New Mexico Institute of Mining and Technology, Socorro, USA |
| SNSN | Saudi NSN, King Abdulaziz City for Sci. and Tech., Riyadh, Saudi Arabia |
| SOF | Section of Seismology, Bulgarian Academy of Sciences, Sofia, Bulgaria |
| SOME | |
| SPGM | Service de Physique du Globe, Rabat Agdal, Morocco |
| SRPD | Savannah River Laboratory, Aiken, South Carolina, USA |
| SSNC | Centro Nacional de Investigaciones Sismologicas, Santiago de Cuba, Cuba |
| SSO | Osservatorio Geofisico Sperimentale, Macerata, Italy |
| STR | Ecole et Observatoire des Sciences de la Terre, Strasbourg, France |
| STU | Institut fur Geophysik der Universitat Stuttgart, Stuttgart, Germany |
| SVA | Department of Mineral Resources, Suva, Fiji |
| TAJK | Tajikistan Academy of Sciences, Dushanbe, Tajikistan |
| TAN | Institut et Observatoire Geophysique d'Antananarivo, Madagascar |
| TAP | Central Weather Bureau, Taipei, China (Taiwan) |
| TATO | Chinese Earthquake Research Center, Taipei, China (Taiwan) |
| TAU | University of Tasmania, Hobart, Australia |
| TEH | University of Tehran, Tehran, Iran |
| THE | Geophysical Laboratory, University of Thessaloniki, Greece |
| THR | Intl. Inst. of Earthquake Engineering and Seismology, Tehran, Iran |
| TIF | Inst. of Geophysics, Academy of Sciences of Georgia, Tbilisi, Georgia |
| TIR | Seismological Center, Academy of Sciences of Albania, Tirana, Albania |
| TJN | |
| TOH | Tohoku University, Sendai, Japan |
| TRI | Osservatorio Geofisico Sperimentale, Trieste, Italy |
| TRKM | Institute of Seismology, Turkmenistan Academy of Science, Ashgabat |
| TRN | University of the West Indies, St. Augustine, Trinidad |
| TUL | Oklahoma Geological Survey, Leonard, USA |
| TVA | Tennessee Valley Authority, Knoxville, Tennessee, USA |
| TZN | University of Dar es Salaam, Tanzania |
| UAV | Laboratorio de Geofisica, Universidad de los Andes, Merida, Venezuela |
| UBC | University of British Columbia, Vancouver, B.C., Canada |
| UBIC | Univ. de Barcelona i Institut d'Estudis Catalans, Barcelona, Spain |
| UCC | Observatoire Royal de Belgique, Uccle, Brussels, Belgium |
| UCR | Seccion de Sismologia, Univ. de Costa Rica, San Jose |
| UDEC | Universidad de Concepcion, Concepcion, Chile |
| UNAH | Universidad Nacional Autonoma de Honduras, Tegucigalpa, Honduras |
| UNDC | National Data Centre, Ukraine |
| UNM | Instituto de Geofisica, UNAM, Mexico City, Mexico |
| UPA | Instituto de Geociencias, Universidad de Panama, Panama |
| UPP | Seismological Institute, Uppsala, Sweden |
| URS | Kochi University, Kochi, Japan |
| USAF | US Air Force Technical Applications Center, Melbourne, Florida, USA |
| USAV | USGS Alaska Volcano Observatory, Anchorage, USA |
| USBR | US Bureau of Reclamation, Denver, Colorado, USA |
| USC | University of Southern California, Los Angeles, USA |
| USGS | US Geological Survey--other than ABQ, AGS, MNLO, NEIC, HVO and USAVO |
| UTSU | Utsunomiya University, Japan |
| UVC | Universidad del Valle, Cali, Colombia |
| UZBK | Institute of Seismology, Uzbekistan Academy of Sciences, Tashkent |
| VAO | Universidade de Sao Paulo, Brazil |
| VIE | |
| VRAC | |
| VSU | |
| WAR | Instytutu Geofizyki, Polskeij Akademii Nauk, Warsaw, Poland |
| WCTN | GSC Western Canada Telemetered Network, Sidney, B.C., Canada |
| WEL | Institute of Geological and Nuclear Sciences, Lower Hutt, New Zealand |
| WELA | IGNS Auckland network, Lower Hutt, New Zealand |
| WELC | IGNS Clyde network, Lower Hutt, New Zealand |
| WELE | IGNS Taranaki network, Lower Hutt, New Zealand |
| WELH | IGNS Hawkes Bay network, Lower Hutt, New Zealand |
| WELO | IGNS Tongariro Volcanic network, Lower Hutt, New Zealand |
| WELP | IGNS Pukaki network, Lower Hutt, New Zealand |
| WELR | IGNS Rotorua network, Lower Hutt, New Zealand |
| WELT | IGNS Taupo network, Lower Hutt, New Zealand |
| WELW | IGNS Wellington network, Lower Hutt, New Zealand |
| WES | Weston Observatory, Boston College, Weston, Massachusetts, USA |
| WIEN | Institut fuer Meteorologie und Geophysik, Univ. Wien, Vienna, Austria |
| WIHG | Wadia Institute of Himalayan Geology, Dehra Dun, India |
| WWC | Woodward-Clyde Consultants, California, USA |
| YARS | GSRAS Siberian Branch, Yakutiya Regional Seis. Center, Yakutsk, Russia |
| ZAG | Geophysical Institute, University of Zagreb, Croatia |
| ZAMG | ZentralAnstalt fuer Meteorologie und Geodynamik, Vienna, Austria |
| ZON | Universidad Nacional de San Juan, San Juan, Argentina |
| ZUR | Schweizerischer Erdbebendienst, Zurich, Switzerland |
