| Network | Data Center | Description | Start Year | End Year |
|---|---|---|---|---|
| B6 |
|
Bransfield Strait Seismic Network | 2008 | 2599 |
| BA |
|
Universita della Basilicata Seismic Network | 2005 | 2599 |
| BC |
|
|
|
|
| BE |
|
|
|
2599 |
| BF |
|
Black Forest Observatory | 1979 | 1995 |
| BG |
|
Berkeley Geysers Network | 2002 | 2999 |
| BI |
|
University of Dhaka Seismographic Network | 2008 | 2599 |
| BK |
|
|
|
|
| BL |
|
|
|
2599 |
| BN |
|
UK-Net, Blacknest Array |
|
2599 |
| BP |
|
Parkfield High Resolution Seismic Network (HRSN) | 2000 | 2999 |
| BQ |
|
Bensberg Earthquake Network, University of Cologne | 2016 | 2599 |
| BR |
|
UnB | 1980 | 2599 |
| BS |
|
Bulgarian Seismic Network | 1980 | 2599 |
| BV |
|
Bolvian Seismic Network | 1913 | 2599 |
| BW |
|
BayernNetz | 1980 | 2599 |
| BX |
|
Botswana Seismological Network | 2001 | 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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