Can you open http://hec.su/dffr from mainland China?
No.
No recent testsVerdict from 2026-07-23 · 3 mo ago
As of the last test on 2026-07-23 — 3 mo ago — it was blocked 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/dffr blocked in mainland China right now?
We haven't tested http://hec.su/dffr in the last 90 days. As of the last test on 2026-07-23 (3 mo ago), it was blocked in mainland China. Use the Test now button on this page for a fresh measurement.
Why is http://hec.su/dffr blocked in mainland China?
As of the last test on 2026-07-23 — 3 mo ago — it was blocked in mainland China. We haven't tested it since, so this may have changed.
Since when has http://hec.su/dffr been blocked?
GreatFire has recorded interference with http://hec.su/dffr from mainland China since 2016-03-20.
How can I access http://hec.su/dffr 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/dffr · JSON