| Network | Data Center | Description | Start Year | End Year |
|---|---|---|---|---|
| HE |
|
Finnish National Seismic Network | 1980 | 2599 |
| HN |
|
Hungarian National Infrasound Network | 2017 | 2599 |
| HU |
|
Hungarian National Seismological Network, MTA CSFK GGI (GGI_Net) | 1992 | 2599 |
| IA |
|
BMG-Net, Indonesia (IA-Net) | 1980 | 2599 |
| IO |
|
EvK2-CNR Pyramid Laboratory - Mount Everest | 1980 | 2599 |
| IQ |
|
Plate Boundary Project Iquique, GFZ Potsdam, Germany | 1980 | 2599 |
| IS |
|
Israelian Broadband Seismological Network (GII-Net) | 1980 | 2599 |
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