con.tc
All blocked
The one URL under con.tc we can reach a verdict on is blocked in mainland China. The Great Firewall blocks the connection outright and poisons its DNS. 8 tests have been run under this domain since 2025-02-08, the most recent on 2026-03-25.
Pages and subdomains (1)
https://611study.con.tcas of 2026BlockedAbout con.tc and the Great Firewall
The one URL under con.tc we can reach a verdict on is blocked in mainland China. The Great Firewall blocks the connection outright and poisons its DNS. 8 tests have been run under this domain since 2025-02-08, the most recent on 2026-03-25.
A VPN or another circumvention tool routes the request outside mainland China, past the filtering that blocks con.tc. 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.