# Network Code,Network Name,Network Operator,Network Country (ISO & Name),Network Website,Deployment Country (if different),Digital Object Identifier (DOI)
O1,The NWMO Seismic Network,Nanometrics Seismological Instruments,Canada,,Canada,
O2,Oklahoma Consolidated Temporary Seismic Networks,Oklahoma Geological Survey,United States of America,http://www.ou.edu/content/ogs/research/earthquakes/seismicstations.html,United States of America,10.7914/SN/O2
OA,AusArray Transportable Array,Geoscience Australia,Australia,,Australia,
OB,"Osservatorio Sismico ""A. Bina""","Osservatorio Sismico ""A. Bina"", Perugia",Italy,,Italy,
OC,Observatorio Sismológico CIGEOBIO CONICET,CONICET,Argentina,http://sismo.conicet.gov.ar,Argentina,
OE,Austrian Seismic Network,ZAMG - Zentralanstalt für Meterologie und Geodynamik,Austria,https://www.zamg.ac.at/cms/en/geophysics/seismic-network-of-austria,Austria,10.7914/SN/OE
OF,European Multidisciplinary Seafloor and Water Column Observatory - France,CNRS,France,,France,
OG,Sismalp,"Observatoire de Grenoble, Grenoble",France,,France,
OH,Ohio Seismic Network,Ohio Geological Survey,United States of America,http://geosurvey.ohiodnr.gov/earthquakes-ohioseis/ohioseis-home,Ohio,10.7914/SN/OH
OI,Oceania International,USGS,,,Oceania,10.7914/2jer-f064
OK,Oklahoma Seismic Network,Oklahoma Geological Survey,United States of America,http://www.ou.edu/content/ogs/research/earthquakes/seismicstations.html,United States of America,10.7914/SN/OK
OL,Cornegliano Laudense Seismic Network,Istituto Nazionale di Oceanografia e di Geofisica Sperimentale,Italy,,Italy,10.7914/SN/OL
OM,Earthquake Monitoring Program of Oman,Sultan Qaboos University,Oman,http://www.squ.edu.om/emc,Oman,
ON,Rede Sismográfica do Sul e do Sudeste,"Observatório Nacional, Rio de Janeiro, RJ",Brazil,http://www.rsis1.on.br/,Brazil,10.7914/SN/ON
OO,Ocean Observatories Initiative,Rutgers University,United States of America,http://www.oceanobservatories.org/,Juan de Fuca Plate,10.7914/SN/OO
OQ,Oklahoma Structural and Site Effects Network,Oklahoma State University,United States of America,,United States of America,10.7914/SN/OQ
OR,OR - Reykjavik Energy,Reykjavík Energy,Iceland,,Iceland,10.7914/SN/OR
OS,"Seismological Observatory, Brasilia Brazil",University of Brasilia,Brazil,http://www.obsis.unb.br/,Brazil,
OT,OTRIONS,"University of Bari ""Aldo Moro""",Italy,http://www.otrions.uniba.it,Italy,10.7914/SN/OT
OU,Ulaanbaatar seismic network,Institute of Astronomy and Geophysics of Mongolian Academy of Science,Mongolia,https://iag.mn,Mongolia,10.7914/6330-qb38
OV,Observatorio Vulcanológico y Sismológico de Costa Rica,"Obsercatorio Vulcanológico y Sismológico de Costa Rica, Universidad Nacional",Costa Rica,http://www.ovsicori.una.ac.cr/,Costa Rica,10.7914/SN/OV
OW,Ocean Networks Canada Onshore Network,Ocean Networks Canada,Canada,http://oceannetworks.ca/,Canada,10.7914/SN/OW
OX,North-East Italy Seismic Network,Istituto Nazionale di Oceanografia e di Geofisica Sperimentale,Italy,http://rts.crs.inogs.it/,Italy,10.7914/SN/OX
OY,OGS Mobile LAB,Istituto Nazionale di Oceanografia e di Geofisica Sperimentale,Italy,http://rts.crs.inogs.it/,Italy,10.7914/SN/OY
OZ,SRC eqServer,Seismology Research Centre,Australia,,Australia,