List of all TLDs with restricted second level

[Dominik Friedrichs]

Hey group!

Im looking for a list of all TLDs that have a restricted second level zone, 
like .co.uk.
I couldnt find anything on Google, only stumbled upon some TLDs where this 
is the case, namely

.uk
.jp
.au
.nz
.za

But surely there are some more. I realize this is a little off-topic, but i 
couldnt find a better place to ask.
I need this for a SPAM URI-Blocklist lookup script (SURBL), which has to 
decide whether or not to include the third level domain in the lookup query.

Thanks.
Dominik