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
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
2X (2023-2023)	Array-based seismic measurements of OSIRIS-REx’s re-entry	The Johns Hopkins University		DOI
7N (2018-2022)	Arraiolos	Institute of Earth Sciences, University of Evora (ICT-UE), Portugal		DOI
TL	Armutlu Local Seismic Network	Kocaeli University, Türkiye		DOI
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		DOI
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 (2023-2025)	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
XF (1987-1992)	Anza Borehole Experiment	University of California, San Diego (UCSD), United States of America		DOI
ZC (1995-1995)	Antofagasta	GEOFON Program (GFZ-Potsdam, Germany), Germany	Germany	—
1C (2015-2015)	Antithesis 2	Geoazur (Geoazur), France		—
AI	Antarctic Seismographic Argentinean Italian Network - ASAIN	Istituto Nazionale di Oceanografia e di Geofisica Sperimentale (OGS), Italy		DOI
YI (1997-2002)	Antarctic Network of Unattended Broadband Seismometers	IRIS/PASSCAL		DOI
XF (1995-1996)	Antarctic Microearthquake Project, Monitoring of Ice Stream C, West Antarctica	IRIS/PASSCAL		DOI
4E (2022-2023)	Antarctica Ice Rift Experiment	University of Maryland (UMD), United States of America		DOI
1U (2023-2025)	ANSAR	University of Auckland (UoA), New Zealand	—	DOI
4B (2016-2018)	ANR-Remake Quito basin	CEREMA (CEREMA), France		DOI
6D (2023-2025)	A novel magnetometer network to capture the ongoing inflationary episode at Askja volcano, Iceland	Columbia University (CU), United States of America		DOI
YR (2021-2021)	An Open-Access, OBS Controlled-Source Seismic Dataset Across the Cascadia Accretionary Wedge From Multi-Scale Regional OBS and Focus	Woods Hole Oceanographic Institution (WHOI), United States of America		DOI
3H (2023-2024)	An Open Access Experiment to Seismically Image Galapagos Plume-Ridge Interaction	whoi.edu		DOI
GZ	ANKARA-NET	Gazi University, Earthquake Engineering Implementation and Research Center, Türkiye	Türkiye	—
ZB (2019-2020)	Anisotropy and structure of the Priestley Glacier shear margin, Antarctica	University of Otago, New Zealand		DOI
XG (1994-1994)	Anisotropy AI	GEOFON Program (GFZ-Potsdam, Germany), Germany	Germany	—
YM (2010-2012)	An Integrated Analysis of Low-Frequency Seismicity at Villarrica Volcano, Chile	Michigan Technological University (MTU), United States of America		DOI
Y6 (2020-2022)	Anillo	GEOFON Program (GFZ-Potsdam, Germany), Germany	—	DOI

Network Data API

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