It seems that the TOR block extension is not working anymore, probably caused because https://check.torproject.org/cgi-bin/TorBulkExitList.py?ip=208.80.152.2 gives a HTTP 403 (Forbidden).
Noticed, because my open proxy monitoring system started to report edits via (long existing) TOR exit nodes. Now started to maintain again the TOR exit nodes in my database of open proxies.
Recent test: http://nl.wikipedia.org/w/index.php?title=Overleg_Wikipedia:Zandbak&diff=27083157&oldid=26766446, reported here: http://nl.wikipedia.org/w/index.php?title=Wikipedia:Open_proxy_detectie&diff=27083159&oldid=27082535
Usable input for TOR exit nodes is now: http://torstatus.blutmagie.de/ (link on new main page of torproject.org), to be filtered for exit nodes. Is less precise, because of http://meta.wikimedia.org/wiki/Tor_Exit_Node_Configuration configs can't be noticed. Alternative is via https://www.torproject.org/projects/tordnsel.html.en, but generates a lot of traffic. Combination of both may be considered if original url remains not accessible.
Version: unspecified
Severity: enhancement