404. That’s an error.
The requested URL /add?source=atgs&feedurl=http%3A//rss.icerocket.com/xmlfeed%3Fid%3D15675 was not found on this server. That’s all we know.
/add?source=atgs&feedurl=http%3A//rss.icerocket.com/xmlfeed%3Fid%3D15675