I know one too but I can't mention it here because of the charter. Promoting one's own site, even if it is the only one of its kind in the world, is frowned upon. :) It only covers about 50 TLDs though. It is actually quite difficult to get ccTLD domain counts out of some registries. Some such as .ch and .li only publish quarterly. Others have a few months of a delay. There are a few who are quite good about publishing stats and have them on the front page of their registry website.