Network Codes

The following network codes are assigned by the FDSN to facilitate unique identifiers for seismological data streams.

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Network Code	Network Name	Operated By	Deployment	DOI
H2	Hawaii 2 Observatory	University of Hawaii (UH), United States of America		—
HA	Hellenic Unified Seismological Network	University of Athens, Greece		DOI
HB	ITSAK Network of Lowcost Accelerometers	Institute of Engineering Seismology and Earthquake Engineering (ITSAK), Greece	—	DOI
HC	Seismological Network of Crete	Technological Educational Institute of Crete, Greece		DOI
HE	Finnish National Seismic Network	University of Helsinki, Finland		DOI
HF	Swedish Seismic Array Network	Swedish Defence Research Agency (FOI), Sweden		—
HG	High-Gain Long-Period Network	Albuquerque Seismological Laboratory/USGS (ASL), United States of America		DOI
HH	Seismological Network operated by SURVIOT & K-UTEC	SURVIOT Monitoring (SURVIOT), Hungary	—	DOI
HI	ITSAK Strong Motion Network	Institute of Engineering Seimology Earthquake Engineering (ITSAK), Greece		DOI
HK	Hong Kong Seismograph Network	Hong Kong Observatory, China		—
HL	Hellenic Unified Seismological Network	National Observatory of Athens, Institute of Geodynamics, Athens, Greece		DOI
HM	GeoRisk Seismic Network	GeoRisk Earthquake Engineering, Hungary		DOI
HN	Hungarian National Infrasound Network	Institute of Earth Physics and Space Science, Hungary		DOI
HP	Hellenic Unified Seismological Network	University of Patras, Greece		DOI
HR	Croatian Research Seismic Network	Faculty of Science, University of Zagreb, Croatia	—	DOI
HS	Hessischer Erdbebendienst	Hessian Agency for Nature Conservation, Environment and Geology (HLNUG), Germany	Germany	DOI
HT	Hellenic Unified Seismological Network	Aristotle University of Thessaloniki, Greece		DOI
HU	Hungarian National Seismological Network	Institute of Earth Physics and Space Science, Hungary		DOI
HV	Hawaiian Volcano Observatory Network	USGS Hawaiian Volcano Observatory (HVO), United States of America		DOI
HW	Hanford Washington Seismic Network	Pacific Northwest National Laboratory (PNL), United States of America		—
HY	UEH Seismic Network	Université d'Etat d'Haiti (UEH), Haiti	—	DOI
HZ	Hasting Micro-Seismic Consulting	Private Consulting Service (HMSC), United States of America	—	DOI
I	Iranian Seismological Center National Network	Institute of Geophysics, University of Tehran, Iranian Seis Center, Iran	—	—
I0	The Scientific Induced Seismicity Monitoring Network	Alberta Geological Survey (AGS), Canada	—	DOI
I1	Iranian Strong Motion Network	Road, Housing & Urban Development Research Center (BHRC), Iran	Iran	DOI
I2	Iranian National Broadband Seismic Network	International Institute of Earthquake Engineering and Seismology (IIEES), Iran	Iran	—
I3	Bari Railway District	Rete Ferroviaria Italiana (RFI) (RFI), Italy	—	DOI
IA	InaTEWS Indonesia Tsunami Early Warning System	Meteorological, Climatological and Geophysical Agency (BMKG), Indonesia		—
IB	IberArray	Institute Earth Sciences "Jaume Almera" (ICTJA), Spain		DOI
IC	New China Digital Seismograph Network	Albuquerque Seismological Laboratory/USGS (ASL), United States of America		DOI
ID	Project IDA VLP Seismometer Network - UCSD/SIO/IGPP	Scripps Institution of Oceanography (SIO), United States of America		DOI
IE	INL Seismic Monitoring Program	Idaho National Laboratory (INL), United States of America		DOI
IF	IFMS Seismic Network	IFMS, Brazil		DOI
IG	Southern Spain Broadband Seismic Network	Instituto Andaluz de Geofisica, Granada University, Spain	Spain	—
IH	Red Sismica Dominicana del INDRHI	Instituto Nacional de Recursos Hidraulicos, Dominican Republic	Dominican Republic	—
II	Global Seismograph Network - II	EarthScope Consortium, United States of America		DOI
IJ	Istanbul University Seismic Network	Kandilli Observatory And Earthquake Research Institute, Boğaziçi University (KOERI), Türkiye		DOI
IK	IISERK Seismic Network	Indian Institute of Science Education and Research Kolkata (IISER), India	Bharat	DOI
IL	Iranian Long Period Array	Institute of Geophysics, University of Tehran, Iranian Seis Center, Iran		—
IM	International Miscellaneous Stations	Various Institutions, Multiple Countries		DOI
IN	National Seismic Network of India	India Meteorological Department, India		—
IO	International OGS Network	Istituto Nazionale di Oceanografia e di Geofisica Sperimentale (OGS), Italy		DOI
IP	Instituto Superior Tecnico Broadband Seismic Network	Instituto Superior Tecnico, Universidade Tecnica de Lisboa (IST), Portugal		—
IQ	Inquique Local Network	University of Kiel, Germany		DOI
IR	International Registry	International Seismological Centre (ISC), United Kingdom	United Kingdom	—
IS	Israel Seismic Network	Ben-Gurion University of the Negev (BGU), Israel		—
IT	Italian Strong Motion Network	Presidency of Counsil of Ministers - Civil Protection Department (PCM - DPC), Italy		DOI
IU	Global Seismograph Network (GSN - IRIS/USGS)	Albuquerque Seismological Laboratory/USGS (ASL), United States of America		DOI
IV	Italian National Seismic Network	Istituto Nazionale di Geofisica e Vulcanologia (INGV), Italy		DOI
IW	Intermountain West Seismic Network	Albuquerque Seismological Laboratory/USGS (ASL), United States of America		DOI

Network Data API

The network data shown here is also available programmatically through a web service API.