How Great Is the Great Firewall? Measuring China's DNS Censorship [pdf]

Went looking for conclusions and found that:

>After nine months of compiling data, they found that China’s Great Firewall currently blocks around 311,000 domains, with 270,000 blocks working as intended, while 41,000 domains appear to have been blocked by accident.

and

>the research team said that the most blocked domains usually hosted business-related content, followed by domains hosting pornography, and then domains dedicated to information technology (IT).

Source: https://therecord.media/chinas-great-firewall-is-blocking-ar...

Cool stuff. So on top of more than 300K domains blocked, they also found that the Great Firewall is designed for geo-blocking too. China really wants to build it own Internet eh. No wonder why my Chinese friends used to tell me that in China what you're seeing online is what the Chinese government wants you to see.