404. That’s an error.
The requested URL /add?feedurl=http://podcast.flw.mb.tu-dortmund.de/IDAT_WS1314/idat_ws1314.xml was not found on this server. That’s all we know.
/add?feedurl=http://podcast.flw.mb.tu-dortmund.de/IDAT_WS1314/idat_ws1314.xml