Single-article disputes are just when a country tries to take down or edit a single article; this has been done in countries like Australia, France, and the UK, and is usually temporary (more information available on the source page if you're interested). Belarus has arrested two Wikipedia editors over some of the content they posted but didn't actually block the pages, so I don't think it quite counts.
Also, the source page says that the list may not be limited to just these countries, but I can't find sources with other countries. I have a pretty good feeling it's blocked in North Korea, but it might not count since they don't have global internet access anyways (can't censor Wikipedia if you don't have it in the first place!).
Huh. North Korea apparently doesn’t censor Wikipedia, it just doesn’t let anyone but high level government officials access the international internet, and apparently tourists can access Wikipedia fine through 3G.
Interesting. I guess with none of the population actually able to access the internet, they see no need to actually block the website. I didn't realize tourists can still access it as well. Thanks for checking!
Also, the source page says that the list may not be limited to just these countries, but I can't find sources with other countries. I have a pretty good feeling it's blocked in North Korea, but it might not count since they don't have global internet access anyways (can't censor Wikipedia if you don't have it in the first place!).