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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)		—
HA	Hellenic Seismological Network, University of Athens, Seismological Laboratory	University of Athens		DOI
HC	Seismological Network of Crete	Technological Educational Institute of Crete		DOI
HE	Finnish National Seismic Network	University of Helsinki		DOI
HF	Swedish Seismic Array Network	Swedish Defence Research Agency (FOI)		—
HG	High-Gain Long-Period Network	Albuquerque Seismological Laboratory/USGS (ASL)		DOI
HI	ITSAK Strong Motion Network	(ITSAK) Institute of Engineering Seimology Earthquake Engineering		DOI
HK	Hong Kong Seismograph Network	Hong Kong Observatory		—
HL	National Observatory of Athens Seismic Network	National Observatory of Athens, Institute of Geodynamics, Athens		DOI
HM	GeoRisk Seismic Network	GeoRisk Earthquake Engineering		DOI
HN	Hungarian National Infrasound Network	Institute of Earth Physics and Space Science		DOI
HP	University of Patras, Seismological Laboratory	University of Patras		DOI
HS	Hessischer Erdbebendienst	Hessian Agency for Nature Conservation, Environment and Geology (HLNUG)	Germany	DOI
HT	Aristotle University of Thessaloniki Seismological Network	Aristotle University of Thessaloniki		DOI
HU	Hungarian National Seismological Network	Institute of Earth Physics and Space Science		DOI
HV	Hawaiian Volcano Observatory Network	USGS Hawaiian Volcano Observatory (HVO)		DOI
HW	Hanford Washington Seismic Network	Pacific Northwest National Laboratory (PNL)		—
HY	UEH Seismic Network	Université d'Etat d'Haiti (UEH)	—	DOI

Network Data API

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