Can you open www.math.columbia.edu from mainland China?
Sometimes.
No recent testsVerdict from 2025-08-18 · 12 mo ago
As of the last test on 2025-08-18 — 12 mo ago — it was partly disrupted in mainland China. We haven't tested it since, so this may have changed.
Access www.math.columbia.edu with GreatFireVPN →Frequently asked questions
Is www.math.columbia.edu blocked in mainland China right now?
We haven't tested www.math.columbia.edu in the last 90 days. As of the last test on 2025-08-18 (12 mo ago), it was partly disrupted in mainland China. Use the Test now button on this page for a fresh measurement.
Why is www.math.columbia.edu blocked in mainland China?
As of the last test on 2025-08-18 — 12 mo ago — it was partly disrupted in mainland China. We haven't tested it since, so this may have changed.
Since when has www.math.columbia.edu been blocked?
GreatFire has recorded interference with www.math.columbia.edu from mainland China since 2011-12-10.
How can I access www.math.columbia.edu 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 www.math.columbia.edu.
http://www.math.columbia.edu · JSON