Can you open http://hec.su/c3O4 from mainland China?
Sometimes.
No recent testsVerdict from 2026-05-02 · 4 mo ago
As of the last test on 2026-05-02 — 4 mo ago — it was partly disrupted in mainland China. We haven't tested it since, so this may have changed.
Access hec.su with GreatFireVPN →Frequently asked questions
Is http://hec.su/c3O4 blocked in mainland China right now?
We haven't tested http://hec.su/c3O4 in the last 90 days. As of the last test on 2026-05-02 (4 mo ago), it was partly disrupted in mainland China. Use the Test now button on this page for a fresh measurement.
Why is http://hec.su/c3O4 blocked in mainland China?
As of the last test on 2026-05-02 — 4 mo ago — it was partly disrupted in mainland China. We haven't tested it since, so this may have changed.
Since when has http://hec.su/c3O4 been blocked?
GreatFire has recorded interference with http://hec.su/c3O4 from mainland China since 2016-03-01.
How can I access http://hec.su/c3O4 from mainland China?
You need a circumvention tool such as a VPN. GreatFireVPN, built by GreatFire, is designed to bypass the Great Firewall and reach sites like hec.su.
http://hec.su/c3O4 · JSON