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
X7 (2010-2014) PYRenean Observational Portable Experiment
DOI
X7 (2016-2018) Wallowa Uplift & Origin of the columbia River Basalts
  • University of Oregon
DOI
X7 (2019-2019) FORGE Phase2C Stimulation
DOI
X7 (2020-2022) Ochtendung fault line
—
X8 (2007-2010) Studies of Earthquakes & Rapid Motions of Ice
  • Lamont Doherty Earth Observatory (LDEO), Columbia University
 United States of America —
X8 (2011-2011) Coulman High VSP, Antarctica, 2010
  • UC Santa Barbara
DOI
X8 (2012-2017) Deep Structure of Three Continental Sutures in Eastern North America
  • Rutgers University
DOI
X8 (2018-2030) SMARTIE
DOI
X9 (2004-2007) Monitoring an active rift system at the front of the Amery Ice Shelf, East Antarctica
  • University of Chicago
DOI
X9 (2008-2011) Dallas Earthquake Swarm
  • Southern Methodist University (SMU TX)
DOI
X9 (2012-2013) Plate Boundary Evolution and Physics at an Oceanic Transform Fault System
  • Oregon State University (OSU USA)
DOI
X9 (2015-2016) Klyuchevskoy volcanic group experiment
  • Innstitute of Volcanology and Seismology, Russian Academy of Sciences
DOI
X9 (2017-2018) Moment tensor inversion, perforation
  • Sandia National Laboratories
DOI
X9 (2019-2022) Bedload Monitoring of Ephemeral Streams (seed)
  • New Mexico Tech
DOI
XA (1969-1977) Apollo Passive Seismic Experiments
  • NASA Goddard Space Flight Center (GSFC)
DOI
XA (1979-1979) Gulf of California Oblique Seismic Experiment
  • Woods Hole Oceanographic Institution (WHOI)
DOI
XA (1983-1983) Costa Rica Seismic Experiment
  • Woods Hole Oceanographic Institution (WHOI)
—
XA (1987-1988) PANDA -- San Juan, Argentina Experiment
  • University of Memphis, CERI
—
XA (1990-1990) Piñon Flats Small Aperture Array, High Frequency Array
DOI
XA (1991-1991) Piñon Flats Small Aperture Array, Broadband Triggered Array
DOI
XA (1992-1992) Joshua Tree Aftershock
DOI
XA (1993-1993) Non Proliferation Experiment (Chemical Kiloton at NTS)
DOI
XA (1994-1994) Northridge Aftershock Studies
DOI
XA (1995-1996) Missouri to Massachusetts Array
DOI
XA (1997-1999) Anatomy of an Archean Craton, South Africa, A Multidisciplinary Experiment across the Kaapvaal Craton
DOI
XA (2000-2001) LIGO Noise Study — DOI
XA (2002-2003) Bhutan Pilot Experiment
DOI
XA (2004-2007) Taylor Glacier Calving, Collaborative Research: Mechanics of Dry-Land Calving of Ice Glaciers
DOI
XA (2008-2009) Central Oregon Locked Zone Array, Monitoring seismicity associated with a possible asperity on the Cascadia megathrust
  • Oregon State University (OSU USA)
DOI
XA (2010-2010) Sismic Imaging of the Moroccan Atlas
DOI
XA (2011-2011) Using Fault-Zone Trapped Waves to Document Subsuface Rock Damage Caused by the M6.3 Earthquake in Ne
  • University of Southern California (USC)
DOI
XA (2012-2012) AIDA_Maine
  • Cornell University
—
XA (2013-2016) GANSSER: Swiss BB seismic experiment in Bhutan
DOI
XA (2017-2023) The Caucasus Seismic Network: The Uplift and Structure of the Greater and Lesser Caucasus
  • University of Missouri (MU) (Mizzou)
DOI
XA (2025-2026) FarSide Seismic Suite — —
XB (1966-1972) Leo Brady Seismic Network legacy data
  • Sandia National Laboratories
DOI
XB (1977-1982) Viking Mission France —
XB (1985-1985) Son of BOSE Oblique Seismic Experiment
  • Woods Hole Oceanographic Institution (WHOI)
DOI
XB (1989-1990) UC Mammoth/Long Valley network
  • None
 —
XB (1992-1992) Landers Aftershocks
DOI
XB (1993-1995) Southwest Pacific Seismic Experiment
DOI
XB (1996-1996) A study of the Abitibi-Greenville lithoshpere by teleseismic analyses
DOI
XB (1997-1999) Seismic Experiment in Patagonia and Antarctica, A Broadband study of the tectonics and structure of the Antarctic Peninsula and Scotia Sea Regions
DOI
XB (2000-2002) Array studies of anisotropy and converted phases in the Marlborough Fault Zone of New Zealand
DOI
XB (2003-2004) Magdalena Ridge Observatory site noise study
DOI
XB (2005-2007) Broadband Seismic Investigation of the Cameroon Volcanic Line
DOI
XB (2008-2008) Costa Rica Active Source OBS Experiment
  • Woods Hole Oceanographic Institution (WHOI)
—
XB (2009-2013) Program to Investigate Convective Alboran Sea System Overturn
  • University of Oregon
DOI
XB (2014-2014) Sweetwater Array
  • IRIS PASSCAL Instrument Center @ New Mexico Tech
DOI
XB (2015-2015) Active source seismic line near the Rio Grande in Sunland Park, NM
  • University of Texas at El Paso (UTEP)
 — DOI

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