sentry.io
Mixed
Results vary across sentry.io: of 5 URLs tested, 1 is blocked and 4 load normally. The site itself, https://sentry.io, loads normally. The Great Firewall resets the connection. 69 tests have been run under this domain since 2019-05-01, the most recent on 2026-08-14.
The site itself
http://sentry.ioNot blockedhttps://sentry.ioas of 2026Not blockedPages and subdomains (3)
https://sentry.io/welcomeNot blockedhttp://o265433.ingest.sentry.ioas of 2026Blockedhttps://o265433.ingest.sentry.ioas of 2026Not blockedAbout sentry.io and the Great Firewall
Results vary across sentry.io: of 5 URLs tested, 1 is blocked and 4 load normally. The site itself, https://sentry.io, loads normally. The Great Firewall resets the connection. 69 tests have been run under this domain since 2019-05-01, the most recent on 2026-08-14.
A VPN or another circumvention tool routes the request outside mainland China, past the filtering that blocks sentry.io. 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
Each URL's status is its verdict over the last 90 days, the same one its own page headlines.