w3.org
Mixed
Results vary across w3.org: of 18 URLs tested, 1 is blocked, 1 is disrupted some of the time and 16 load normally. The site itself, https://w3.org, loads normally. The Great Firewall resets the connection. 1,418 tests have been run under this domain since 2011-02-26, the most recent on 2026-07-30.
The site itself
http://w3.orgas of 2026Not blockedhttps://w3.orgas of 2026Not blockedhttp://www.w3.orgNot blockedhttps://www.w3.orgas of 2026Not blockedPages and subdomains (14)
https://jigsaw.w3.orgas of 2026Not blockedhttp://validator.w3.orgNot blockedhttps://validator.w3.orgNot blockedhttp://www.w3.org/2000/svgNot blockedhttp://www.w3.org/2005/Atomas of 2026Not blockedhttp://www.w3.org/1999/xhtmlas of 2026Not blockedhttp://www.w3.org/1999/xlinkNot blockedhttps://www.w3.org/2005/Atomas of 2026Not blockedhttp://www.w3.org/2004/03/28-tldNot blockedhttps://www.w3.org/TR/activitypub/Intermittenthttp://lists.w3.org/archives/publicNot blockedhttp://www.w3.org/2001/XMLSchema-instanceNot blockedhttp://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtdNot blockedhttp://validator.w3.org/check?uri=https%3A%2F%2Fwww.freetibet.org%2FBlockedAbout w3.org and the Great Firewall
Results vary across w3.org: of 18 URLs tested, 1 is blocked, 1 is disrupted some of the time and 16 load normally. The site itself, https://w3.org, loads normally. The Great Firewall resets the connection. 1,418 tests have been run under this domain since 2011-02-26, the most recent on 2026-07-30.
A VPN or another circumvention tool routes the request outside mainland China, past the filtering that blocks w3.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
w3.org is ranked #178 among the world's most-visited domains (Tranco).
Sites of similar popularity:azurewebsites.netsoundcloud.comexample.comwebex.com
Each URL's status is its verdict over the last 90 days, the same one its own page headlines.