citizenlab.ca
Mostly blocked
19 of the 20 URLs we have a verdict for under citizenlab.ca are blocked in mainland China; 1 are not. The site itself, https://citizenlab.ca, is blocked. The Great Firewall poisons its DNS, silently drops its packets so requests time out and blocks the connection outright. 339 tests have been run under this domain since 2017-07-11, the most recent on 2026-07-25.
The site itself
http://citizenlab.caas of 2026Blockedhttps://citizenlab.caBlockedhttp://www.citizenlab.caas of 2026Blockedhttps://www.citizenlab.caas of 2026BlockedPages and subdomains (16)
https://citizenlab.ca/feed/as of 2026Blockedhttps://citizenlab.ca/tag/chinaas of 2026Blockedhttps://citizenlab.ca/tag/nso-groupas of 2026Blockedhttps://citizenlab.ca/2015/04/chinas-great-cannonas of 2026Blockedhttps://citizenlab.ca/2016/11/wechat-china-censorship-one-app-two-systems/Blockedhttps://citizenlab.ca/2023/08/vulnerabilities-in-sogou-keyboard-encryption/as of 2026Blockedhttps://citizenlab.ca/wp-content/themes/citizenlab-wp-theme/library/images/as of 2026Intermittenthttps://citizenlab.ca/2022/01/cross-country-exposure-analysis-my2022-olympics-app/as of 2026Blockedhttps://citizenlab.ca/wp-content/themes/citizenlab-wp-theme/library/images/CL-logo-3-headed.pngas of 2026Blockedhttps://citizenlab.ca/2017/07/analyzing-censorship-of-the-death-of-liu-xiaobo-on-wechat-and-weiboas of 2026Blockedhttps://citizenlab.ca/2017/11/managing-message-censorship-19th-national-communist-party-congress-wechatas of 2026Blockedhttps://citizenlab.ca/2024/10/should-we-chat-too-security-analysis-of-wechats-mmtls-encryption-protocolas of 2026Blockedhttps://citizenlab.ca/2024/02/paperwall-chinese-websites-posing-as-local-news-outlets-with-pro-beijing-contentas of 2026Blockedhttps://citizenlab.ca/2016/02/%E7%A0%94%E7%A9%B6%E5%8F%91%E7%8E%B0%E7%99%BE%E5%BA%A6%E6%B5%8F%E8%A7%88%E5%99%A8%E5%AD%98%E5%9C%A8%E5%AE%89%E5%85%A8%E4%B8%8E%E9%9A%90%E7%A7%81%E9%97%AE%E9%A2%98as of 2026Blockedhttps://citizenlab.ca/2017/07/%E5%8B%BF%E5%BF%98%E6%99%93%E6%B3%A2%EF%BC%9A%E5%BE%AE%E4%BF%A1%E5%92%8C%E5%BE%AE%E5%8D%9A%E9%92%88%E5%AF%B9%E5%88%98%E6%99%93%E6%B3%A2%E9%80%9D%E4%B8%96%E7%9A%84%E4%BF%A1%E6%81%AF%E5%AE%A1%E6%9F%A5Blockedhttps://deibert.citizenlab.caBlocked
About citizenlab.ca and the Great Firewall
19 of the 20 URLs we have a verdict for under citizenlab.ca are blocked in mainland China; 1 are not. The site itself, https://citizenlab.ca, is blocked. The Great Firewall poisons its DNS, silently drops its packets so requests time out and blocks the connection outright. 339 tests have been run under this domain since 2017-07-11, the most recent on 2026-07-25.
A VPN or another circumvention tool routes the request outside mainland China, past the filtering that blocks citizenlab.ca. GreatFire runs GreatFire VPN; the Analyzer also tests the domains of many VPN and proxy providers, so you can check whether one is reachable before relying on it.
Elsewhere on the site
Most-blocked .ca domainsEvery tested URL under citizenlab.ca
Each URL's status is its verdict over the last 90 days, the same one its own page headlines.