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 Seismological Network, University of Athens, Seismological Laboratory	University of Athens, 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
HI	ITSAK Strong Motion Network	Institute of Engineering Seimology Earthquake Engineering (ITSAK), Greece		DOI
HK	Hong Kong Seismograph Network	Hong Kong Observatory, China		—
HL	National Observatory of Athens Seismic 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	University of Patras, Seismological Laboratory	University of Patras, Greece		DOI
HR	Croatian Research Seismic Network	University of Zagreb, Croatia	—	—
HS	Hessischer Erdbebendienst	Hessian Agency for Nature Conservation, Environment and Geology (HLNUG), Germany	Germany	DOI
HT	Aristotle University of Thessaloniki 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

Network Data API

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