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
YA (2017-2019)	Back-arc rifting in New Zealand	Tulane University (TU), United States of America		DOI
8S (2022-2022)	Azores Network	University College London (UCL), United Kingdom	—	DOI
X1 (2007-2008)	Aysen Chile Aftershock Deployment	University of Liverpool, United Kingdom		—
8U (2022-2022)	Axial Volcano compliance tests	Lamont Doherty Earth Observatory, Columbia University (LDEO), United States of America	—	DOI
AW	AWI Network Antarctica	Alfred Wegener Institute for Polar and Marine Research, Germany		DOI
7G (2019-2020)	Autocorrelation of ambient noise and P-wave coda for crustal structure	Purdue University, United States of America		DOI
OE	Austrian Seismic Network	ZAMG - Zentralanstalt für Meterologie und Geodynamik (ZAMG), Austria		DOI
M8	Australian Semi-Permanent Support Network	Australian National University (ANU), Australia	—	DOI
S1	Australian Seismometers in Schools	Australian National University (ANU), Australia		DOI
AU	Australian National Seismograph Network	Geoscience Australia (GA), Australia		DOI
3M (2013-2016)	Australia-Indonesia Tectonics Observatory 2013-2016	Australian National University (ANU), Australia		DOI
OA	AusArray Transportable Array	Geoscience Australia (GA), Australia	Australia	—
6K (2020-2022)	AusArray SA	Geological Survey of South Australia, Australia		DOI
4V (2022-2023)	Aurora Vent Field Gakkel Ridge	Alfred Wegener Institute (AWI), Germany	—	—
X5 (2023-2025)	Auckland-Hauraki Node Array	Australian National University (ANU), Australia	—	DOI
7K (2018-2019)	AtlanticNoise	Woods Hole Oceanographic Institution (WHOI), United States of America		DOI
9O (2019-2020)	ASTUTI Costa Rica	U.S. Geological Survey, United States of America		DOI
XB (1996-1996)	A study of the Abitibi-Greenville lithoshpere by teleseismic analyses	IRIS/PASSCAL		DOI
1B (2013-2013)	Assured Arctic Awareness	University of Washington, United States of America		DOI
5J (2017-2019)	ASR	Australian National University (ANU), Australia		DOI
4F (2007-2011)	Askja 2007	University of Cambridge, United Kingdom		DOI
XB (2000-2002)	Array studies of anisotropy and converted phases in the Marlborough Fault Zone of New Zealand	IRIS/PASSCAL		DOI
1C (2016-2016)	Array in Wittewierum, Netherlands	Deutsches GeoForschungsZentrum GFZ (GFZ Potsdam), Germany		DOI
7N (2018-2022)	Arraiolos	Institute of Earth Sciences, University of Evora (ICT-UE), Portugal		DOI
TL	Armutlu Local Seismic Network	Kocaeli University, Türkiye		—
A2	Armenian Seismological Network	Institute Of Geological Sciences, NAS, RA (IGS), Armenia		DOI
A0	Armenian National Seismic Network	Armenian National Survey for Seismic Protection (NSSP), Armenia		DOI
YR (2016-2017)	Armatrice Sequence International	British Geological Survey, United Kingdom		DOI
1A (2009-2012)	Arlita	Reseau sismologique et géodésique français (RESIF), France		DOI
AH	Arkhangelsk Seismic Network	N. Laverov Federal Center for Integrated Arctic Research (FCIARctic), Russian Federation		DOI
AO	Arkansas Seismic Observatory	University of Arkansas at Little Rock (UALR), United States of America		—
AG	Arkansas Seismic Network	Arkansas Geological Survey (AGS), United States of America		—
3C (2014-2014)	Arizona Rapid Array Array Mobilization Program	Arizona Geological Survey, United States of America		DOI
AE	Arizona Broadband Seismic Network	Arizona Geological Survey, United States of America		DOI
HT	Aristotle University of Thessaloniki Seismological Network	Aristotle University of Thessaloniki, Greece		DOI
YP (2014-2015)	Argostoli earthquake aftershock experiment	Institut des Sciences de la Terre, France		—
XM (2012-2014)	ARGOS - Alutu and Regional Geophysical Observation Study	University of Bristol, United Kingdom		DOI
KF	ARGONET	Atomic Energy and Alternative Energies Commission (CEA), France Institute of Engineering Seimology Earthquake Engineering (ITSAK), Greece Ionian University, Greece University of Patras, Greece	—	DOI
XJ (1988-1988)	Argo Abyssal Plain VSP	Woods Hole Oceanographic Institution (WHOI), United States of America		DOI
8M (2022-2022)	Arette Cluster	Observatoire Midi-Pyrénées (OMP), France	—	DOI
ZO (2008-2009)	ARC-Vanuatu Seismic Experiment (Volcanoes)	Observatoire de Grenoble, Grenoble, France		DOI
3A (2008-2009)	ARC-Vanuatu	Reseau sismologique et géodésique français (RESIF), France		DOI
3S (2018-2019)	Archimedes	GEOMAR Helmholtz Centre for Ocean Research Kiel (IFM-GEOMAR), Germany	—	DOI
1Q (2016-2017)	AQT	Australian National University (ANU), Australia		DOI
4J (2014-2016)	AQ3 SW Queensland and NW New South Wales	Australian National University (ANU), Australia		DOI
AP	APS Free Field Array	AP (APS), United States of America		DOI
Z2 (2023-2024)	Application of seismic geophones to define sediment volume transport through the middle reach of the White River, Washington.	US Army Corps of Engineers		DOI
Z4 (2009-2010)	Appalachian Seismic Transect	University of North Carolina at Chapel Hill (UNC), United States of America		DOI
XA (1969-1977)	Apollo Passive Seismic Experiments	NASA Goddard Space Flight Center (GSFC), United States of America		DOI
AZ	ANZA Regional Network	University of California, San Diego (UCSD), United States of America		DOI

Network Data API

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