| Network | Data Center | Description | Start Year | End Year |
|---|---|---|---|---|
| K5 |
|
Bhutan Seismic Network | 2017 | 2599 |
| KC |
|
Central Asian Seismic Network of CAIAG | 2008 | 2599 |
| KG |
|
Korean Seismic Network - KIGAM | 1997 | 2599 |
| KN |
|
Kyrgyz Seismic Telemetry Network | 1991 | 2599 |
| KO |
|
Bogazici University Kandilli Observatory And Earthquake Research Institute | 1971 | 2599 |
| KP |
|
Korea Polar Observation Network | 2013 | 2599 |
| KR |
|
Kyrgyz Digital Network | 2007 | 2599 |
| KS |
|
Korea National Seismography Network (KNSN-KMA) | 2006 | 2599 |
| KT |
|
KROTONE SEISMIC NETWORK | 2003 | 2599 |
| KW |
|
Kuwait National Seismic Network | 1997 | 2599 |
| KY |
|
Kentucky Seismic and Strong Motion Network | 1982 | 2599 |
| KZ |
|
Kazakhstan Network | 1994 | 2599 |
| WA |
|
West Central Argentina Network | 1958 | 2599 |
| WC |
|
Curacao Seismic Network | 2006 | 2599 |
| WI |
|
West Indies French Seismic Network | 2008 | 2599 |
| WM |
|
Western Mediterranean Seismic Network | 1980 | 2599 |
| WU |
|
The Southern Ontario Seismic Network | 1991 | 2599 |
| WW |
|
Idaho Seismic Network | 2022 | 2599 |
| WY |
|
Yellowstone National Park Seismograph Network | 1983 | 2599 |
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