worldcat.org
All blocked
Every URL under worldcat.org that we can reach a verdict on — 13 of them — is blocked in mainland China. The site itself, https://worldcat.org, is blocked. The Great Firewall poisons its DNS, silently drops its packets so requests time out and blocks the connection outright. 356 tests have been run under this domain since 2012-05-11, the most recent on 2026-07-20.
The site itself
http://worldcat.orgas of 2026Blockedhttps://worldcat.orgas of 2026Blockedhttp://www.worldcat.orgas of 2026Blockedhttps://www.worldcat.orgas of 2026BlockedPages and subdomains (9)
http://gsk.worldcat.orgas of 2026Blockedhttps://share.worldcat.orgBlockedhttps://search.worldcat.orgas of 2026Blockedhttps://oaister.worldcat.orgBlockedhttps://oaister.on.worldcat.orgas of 2026Blockedhttps://aucklanduni.on.worldcat.orgas of 2026Blockedhttps://brenau.on.worldcat.org/discoveryas of 2026Blockedhttps://search.worldcat.org/search?q=9781069076601Blockedhttps://www.worldcat.org/identities/lccn-nr2003-015016BlockedAbout worldcat.org and the Great Firewall
Every URL under worldcat.org that we can reach a verdict on — 13 of them — is blocked in mainland China. The site itself, https://worldcat.org, is blocked. The Great Firewall poisons its DNS, silently drops its packets so requests time out and blocks the connection outright. 356 tests have been run under this domain since 2012-05-11, the most recent on 2026-07-20.
A VPN or another circumvention tool routes the request outside mainland China, past the filtering that blocks worldcat.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 worldcat.org
Each URL's status is its verdict over the last 90 days, the same one its own page headlines.