[graingert]

You know there's a root index file at http://cdn.media.ccc.de/INDEX

Also you should use the CDN to redirect to the correct mirror

[hydrogen18]

The web server returns redirect responses to mirrors that wget follows.

[danimo]

Just to clear this up: cdn.media.ccc.de is the new name for ftp.ccc.de. It was renamed because it does not actually serve FTP anymore, since HTTP can be load-balanced a lot better.