Last modified: 2005-12-27 16:51:12 UTC
http://83357.[.0s48.info/ urls don't seem to work either, but they still spam my mediawiki installation.
That is due to the square bracket in the URL, I believe; I'm not 100% positive, but I think someone committed a patch to the extensions' code to fix this issue.
*** This bug has been marked as a duplicate of 4377 ***