GreatFire

signal.org

Mostly blocked

34 of the 37 URLs we have a verdict for under signal.org are blocked in mainland China; 3 are not. The site itself, https://signal.org, is blocked. The Great Firewall poisons its DNS, silently drops its packets so requests time out and blocks the connection outright. 1,000 tests have been run under this domain since 2016-04-08, the most recent on 2026-08-04.

DNS poisoning 33 Timeout / silent drop 27 Connection failed 4 Empty response 2 TLS handshake failure 2
39URLs tested
34blocked
1,000tests all-time
2016first tested
4 d agolast tested

The site itself

http://signal.orgas of 2026Blockedhttps://signal.orgBlockedhttp://www.signal.orgas of 2025Blockedhttps://www.signal.orgas of 2026Blocked

Pages and subdomains (35)

https://signal.org/enas of 2026Blockedhttps://signal.org/deBlockedhttps://signal.org/jaBlockedhttps://signal.org/en/Blockedhttps://signal.org/ja/as of 2026Intermittenthttps://signal.org/blogBlockedhttps://signal.org/zh_CNBlockedhttps://signal.org/zh_TWas of 2026Blockedhttp://signal.org/installBlockedhttps://signal.org/installas of 2026Blockedhttps://signal.org/downloadIntermittenthttps://signal.org/android/apkas of 2026Blockedhttps://signal.org/en/downloadBlockedhttps://signal.org/ja/download/as of 2026Intermittenthttps://signal.org/download/macosas of 2026Blockedhttps://signal.org/zh_CN/downloadBlockedhttps://signal.org/en/download/iosBlockedhttps://signal.org/download/windowsas of 2026Blockedhttps://signal.org/download/androidas of 2026Blockedhttps://signal.org/blog/looking-back-on-the-frontas of 2026Blockedhttps://signal.org/docs/specifications/doubleratchetas of 2026Blockedhttp://cdn.signal.orgas of 2026Blockedhttps://cdn.signal.orgBlockedhttp://cdn2.signal.orgas of 2026Blockedhttps://cdn2.signal.orgBlockedhttps://updates.signal.orgas of 2026Blockedhttps://support.signal.orgas of 2026Blockedhttps://updates.signal.org/xas of 2026Blockedhttps://www.signal.org/zh_CNas of 2026Blockedhttps://turn2.voip.signal.orgUnresolvablehttps://cdn-staging.signal.orgas of 2026Blockedhttps://cdn2-staging.signal.orgas of 2026Blockedhttps://api.directory.signal.orgUnresolvablehttps://updates.signal.org/android/Signal-website-release-4.29.7.apkas of 2026Blockedhttps://updates.signal.org/android/Signal-website-universal-release-4.71.5.apkas of 2026Blocked

About signal.org and the Great Firewall

Is signal.org blocked in mainland China?

34 of the 37 URLs we have a verdict for under signal.org are blocked in mainland China; 3 are not. The site itself, https://signal.org, is blocked. The Great Firewall poisons its DNS, silently drops its packets so requests time out and blocks the connection outright. 1,000 tests have been run under this domain since 2016-04-08, the most recent on 2026-08-04.

How can I reach signal.org from mainland China?

A VPN or another circumvention tool routes the request outside mainland China, past the filtering that blocks signal.org. 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 .org domainsEvery tested URL under signal.org

Each URL's status is its verdict over the last 90 days, the same one its own page headlines.