Can you open http://ma.tt from mainland China?
Sometimes.
No recent testsVerdict from 2026-01-13 · 7 mo ago
As of the last test on 2026-01-13 — 7 mo ago — it was partly disrupted in mainland China. We haven't tested it since, so this may have changed.
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.
Frequently asked questions
Is http://ma.tt blocked in mainland China right now?
We haven't tested http://ma.tt in the last 90 days. As of the last test on 2026-01-13 (7 mo ago), it was partly disrupted in mainland China. Use the Test now button on this page for a fresh measurement.
Why is http://ma.tt blocked in mainland China?
As of the last test on 2026-01-13 — 7 mo ago — it was partly disrupted in mainland China. We haven't tested it since, so this may have changed.
Since when has http://ma.tt been blocked?
GreatFire has recorded interference with http://ma.tt from mainland China since 2012-12-02.
How can I access http://ma.tt 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 ma.tt.
http://ma.tt · JSON