z.com
Mixed
Results vary across z.com: of 12 URLs tested, 2 are blocked, 4 are disrupted some of the time, 4 load normally and 2 have no conclusive recent result. The Great Firewall silently drops its packets so requests time out and blocks the connection outright. 231 tests have been run under this domain since 2017-11-10, the most recent on 2026-10-22.
The two are filtered by different means — an unencrypted request by the address and keywords it carries in the clear, an encrypted one by the server name in its TLS handshake — so one working while the other does not is normal.
The site itself
http://z.comNot blockedhttps://z.comIntermittentPages and subdomains (10)
https://z.com/jpIntermittenthttp://trade.z.comas of 2026Blockedhttps://bullion.z.comUnresolvablehttps://cloud.z.com/phas of 2026Not blockedhttps://bullion.z.com/scUnresolvablehttps://gmominer.z.com/jaIntermittenthttps://gmominer.z.com/zhas of 2026Not blockedhttps://cloudmining.z.comIntermittenthttps://trade.z.com/hk/tcBlockedhttps://gmominer.z.com/ja/specas of 2026Not blockedAbout z.com and the Great Firewall
Results vary across z.com: of 12 URLs tested, 2 are blocked, 4 are disrupted some of the time, 4 load normally and 2 have no conclusive recent result. The Great Firewall silently drops its packets so requests time out and blocks the connection outright. 231 tests have been run under this domain since 2017-11-10, the most recent on 2026-10-22.
Plain HTTP and HTTPS differ here: http://z.com is not blocked, https://z.com is intermittent. The two are filtered by different means — an unencrypted request by the address and keywords it carries in the clear, an encrypted one by the server name in its TLS handshake — so one working while the other does not is normal.
A VPN or another circumvention tool routes the request outside mainland China, past the filtering that blocks z.com. 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.