Earthquake activity and Recent Seismicity:

Colombia:

• Red Sismológica Nacional de Colombia (RSNC) (National Seismological Network of Colombia)
  
• Red Sísmica Regional del Eje Cafetero (RSEC) (Coffee Region Seismic Network)
  
• Observatorio Sismológico del Suroccidente (OSSO) (Southwest Seismological Observatory)
  

United States:

• Earthquakes in Alaska
  
• Earthquakes in California
  
• National Earthquake Information center (USA)NEIC
  
• Harvard Univ. CMT index
  

Europe:

• International Seismological Centre
  
• European mediterranean seismological centre EMSC
  
• Earthquakes in Iceland