This domain points to the OSGeo.nl GitHub repo osgeonl.github.io. These are GH pages with custom content like hand-written HTML for the osgeo.nl website. Examples: http://io.osgeo.nl/sitecontent/osgeonl_dag/osgeonl_dag_2012.html http://io.osgeo.nl/sitecontent/osgeonl_dag/osgeonl_dag_2013.html http://io.osgeo.nl/sitecontent/osgeonl_dag/osgeonl_dag_2014.html