| Network | Data Center | Description | Start Year | End Year |
|---|---|---|---|---|
| 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 |
| G |
|
GEOSCOPE - French Global Network of Seismological Broadband Stations | 1982 |
|
| G2 |
|
GEOBEST Baseline Seismic Monitoring Networks for Deep Geothermal Energy Projects in Switzerland. | 2006 | 2599 |
| GB |
|
|
|
2599 |
| GD |
|
Global Positioning System (GPS) Displacement Measurements | 1976 | 2599 |
| GE |
|
|
|
2599 |
| GF |
|
|
|
2599 |
| GG |
|
Greenland Ice Sheet Monitoring Network | 2012 | 2599 |
| GH |
|
Ghana Digital Seismic Network | 2010 | 2599 |
| GI |
|
Red Sismologica Nacional- Guatemala | 2001 | 2599 |
| GL |
|
Guadeloupe Seismic and Volcano Observatory Network | 1950 |
|
| GM |
|
|
|
|
| GO |
|
National Seismic Network of Georgia |
|
2599 |
| GQ |
|
GQ Seismic Network | 2018 | 2599 |
| GR |
|
|
1976 | 2599 |
| GS |
|
US Geological Survey Networks |
|
|
| GT |
|
Global Telemetered Seismograph Network (USAF/USGS) | 1993 | 2599 |
| GU |
|
Regional Seismic Network of North Western Italy | 1980 | 2599 |
| GX |
|
GEOFON affiliated stations | 2019 | 2599 |
| GY |
|
Geyokcha Array, Turkmenistan | 1993 | 1994 |
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