International Federation of Digital Seismograph Networks
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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
9P (2015-2018) Horizontal Pressure Gradient Test Deployments
  • Lamont Doherty Earth Observatory, Columbia University (LDEO), United States of America
 — DOI
ZV (2020-2020) Horizon City, Texas Seismic Project
  • UTEP
DOI
7Y (2021-2022) Horda platform OBS deployment
  • University of Bergen, Inst of Geophysics (UiB), Norway
 — DOI
X6 (2014-2016) Homestake Gold Mine Three-dimensional, Broadband Array
  • University of Minnesota-Twin Cities, United States of America
DOI
6H (2018-2018) Hollywood Fault 18
DOI
X5 (2005-2005) Hole 1256D VSP
DOI
X3 (2012-2012) Hoadley Flowback Microseismic Experiment
  • University of Calgary, Canada
DOI
5B (2008-2008) HLP 3C Piggy Back RT130
  • Stanford University, United States of America
DOI
YA (2008-2008) HLP-3
  • Stanford University, United States of America
—
3J (2013-2015) HIRE-II
  • GEOFON Program (GFZ-Potsdam, Germany), Germany
DOI
YQ (2001-2002) Himalaya Tectonic — —
YL (2001-2002) Himalayan Seismotectonics, Nepal and Tibet
DOI
XQ (2001-2002) Hikurangi Subduction System (New Zealand) Seismic Transects, North Island Geophysical Transect Passive
DOI
8F (2014-2015) Hikurangi Ocean Bottom Investigation of Tremor and Slow Slip, LBPR and TXBP data
  • University of Texas at Austin, United States of America
DOI
YH (2014-2015) Hikurangi Ocean Bottom Investigation of Tremor and Slow Slip
  • University of Texas at Austin, United States of America
DOI
ZO (2014-2016) HiK-NET temporary experiment (RESIF-SISMOB)
DOI
9C (2010-2011) High Resolution Seismological Profiling across Sierra Nevad
  • GEOFON Program (GFZ-Potsdam, Germany), Germany
DOI
2N (2022-2022) High Resolution Imaging of the Pedernales Earthquake Rupture Zone - Nodes Phase II
  • Lehigh University, United States of America
DOI
XE (2020-2020) High Resolution Imaging of the Pedernales Earthquake Rupture Zone - Nodes
  • Lehigh University, United States of America
DOI
9Y (2022-2022) High resolution Imaging of the Pedernales Earthquake Rupture zone, Ecuador (HIPER2) — DOI
XF (2021-2022) High Resolution Imaging of the Pedernales Earthquake Rupture Zone - Broadbands
  • Lehigh University, United States of America
DOI
X2 (2020-2022) High Resolution Imaging of the Pedernales Earthquake Rupture zone
DOI
YS (2022-2022) High-­resolution imaging of the crustal-­scale structure of the Central Pyrenees and role of Variscan inheritance on its geodynamic evolution
DOI
XJ (2010-2010) High-resolution imaging of magma transport at the summit of Kilauea Volcano
DOI
XP (1994-1995) High resolution experiment along the Hikurangi subduction zone in New Zealand, Taupo Volcanic Zone
DOI
Z2 (2008-2008) High-Lava-Plains-Active-Vcomp
  • Stanford University, United States of America
DOI
Z5 (2008-2008) High Lava Plains Active - Single Component Subset A
  • University of Oklahoma (OU), United States of America
DOI
X7 (2004-2005) Hi-CLIMB two-dimension array - Peking University — DOI
XE (2021-2021) HERSK-TNA, Hekla Real-Time Seismic Network - Transnational Access Eurovolc project — DOI
YT (2006-2006) Herdubreid 2006
  • University of Cambridge Earth Sciences, United Kingdom
—
ZJ (2005-2005) Herdubreid 2005
  • Geological Survey of Estonia (GSE), Estonia
—
XF (2018-2019) Hazard in Tanzanian Rift
DOI
3U (2018-2019) Hawkes Bay SSE experiment
  • Lamont Doherty Earth Observatory, Columbia University (LDEO), United States of America
 — DOI
ZF (1999-2001) Hawaii Plume
  • GEOFON Program (GFZ-Potsdam, Germany), Germany
—
Z1 (2018-2018) Hawaii Nodal RAPID 2018
DOI
XH (2007-2007) Hawaiian South Flank Slow EQ Project
DOI
3D (2014-2016) HART Pisagua Earthquake
  • GEOFON Program (GFZ-Potsdam, Germany), Germany
DOI
9A (2021-2022) HART-La Palma volcanic eruption — DOI
ZB (2010-2015) HARP
  • Scripps Institution of Oceanography (SIO), United States of America
—
2V (2023-2025) Harnessing the Geothermal Potential of Oklahoma Sedimentary Basin
  • University of Oklahoma (OU), United States of America
DOI
9B (2021-2025) Hampton Roads Seismic Monitoring Network
  • Virginia Polytechnic Institute and State University (Virginia Tech), United States of America
 — DOI
Z2 (2006-2007) HAMNET
  • Federal Institute for Geosciences and Natural Resources (BGR), Germany
—
9L (2020-2020) Hall Ranch Nodal Seismic Array — DOI
Z4 (2024-2027) Halloween Crack
  • British Antarctic Survey (BAS), United Kingdom
 — DOI
8J (2023-2025) Halden local seismic network — DOI
Z2 (2021-2022) Haiti Response 2021 — DOI
YB (2010-2010) Haiti Earthquake Aftershock Experiment
DOI
X2 (2012-2012) Haida Gwaii OBS Experiment Canada —
9U (2019-2021) GWatt temporary seismic network at UDDGP — DOI
XV (2021-2023) Guyana Aftershock Study Network
  • Institute of Astronomy, Geophysics & Atmospheric Science, Univ. of Sao Paulo (IAG-USP), Brazil
 — —

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