| Network | Data Center | Description | Start Year | End Year |
|---|---|---|---|---|
| D0 |
|
Kamchatka seismic monitoring network | 2015 | 2016 |
| DE |
|
Nanometrics Research Network | 2013 | 2599 |
| DK |
|
|
|
2599 |
| DR |
|
Centro Nacional de Sismologia (CNS) | 1998 | 2599 |
| DT |
|
Carnegie Analog Broadband Seismograph Network | 1965 | 2003 |
| DU |
|
Seismological Association of Australia | 1995 | 2599 |
| DW |
|
Digital World-Wide Standardized Seismograph Network | 1980 | 1994 |
| DZ |
|
Algerian National Seismic Network | 1980 | 2599 |
| EB |
|
Ebre Observatory Seismic Network | 1980 | 2599 |
| EC |
|
Ecuador Seismic Network | 2002 | 2599 |
| EE |
|
Estonian Seismic Network | 1980 | 2599 |
| EG |
|
EUROSEISTEST Strong Motion Network (SDGEE_AUTH) | 1993 | 2599 |
| EI |
|
|
|
2599 |
| EM |
|
Electromagnetic Studies of the Continents | 1996 | 2599 |
| EN |
|
|
2007 |
|
| EO |
|
EON-ROSE | 2018 | 2599 |
| EP |
|
UTEP Seismic Network | 2009 | 2599 |
| ER |
|
Mount Erebus Volcano Observatory Seismic Network | 1981 | 2599 |
| ES |
|
Spanish Digital Seismic Network | 1980 | 2599 |
| ET |
|
CERI Southern Appalachian Seismic Network | 1982 | 2599 |
| EY |
|
Egyptian national seismological network | 1997 | 2599 |
| UD |
|
UD network | 1980 | 2599 |
| UF |
|
Centro de Investigación de Resiliencia y Riesgos Multi-Amenazas | 2022 | 2599 |
| UH |
|
UH Infrasound Network | 2004 | 2599 |
| UI |
|
North Idaho Seismic Network | 2004 | 2599 |
| UK |
|
UK Schools Seismic Network | 2005 | 2599 |
| UL |
|
USGS Low Frequency Geophysical Data Network | 1974 | 2999 |
| UM |
|
University of Montana Seismic Network | 2017 | 2599 |
| UO |
|
|
|
|
| UP |
|
Swedish National Seismic Network | 1980 | 2599 |
| US |
|
United States National Seismic Network |
|
|
| UU |
|
University of Utah Regional Seismic Network | 1962 | 2599 |
| UW |
|
|
|
|
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