China's Great Firewall has blocked many websites in China. We won't be able to list all of them. But here are some of the most popular websites/services that are currently blocked in China (some of them are partially blocked): Gmail, Google search, Google Maps, Google Docs, Google APIs, Whatsapp, Reddit, Picasa, Facebook, YouTube, Wikipedia, Twitter, Yahoo!, Blogspot, Instagram, Github, Pinterest, Pornhub, The Pirate Bay, Dailymotion, The New York Times, Dropbox, Vimeo, SoundCloud, Flickr, BBC, WhatsApp etc.