Can you open www.cs.columbia.edu from mainland China?
Sometimes.
Access is unreliable — 100% of the last 1 conclusive tests showed interference.
Access www.cs.columbia.edu with GreatFireVPN →2014first tested
1/1disrupted · last 90 days
26 d agolast tested
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Frequently asked questions
Is www.cs.columbia.edu blocked in mainland China right now?
As of the last test on 2026-07-04, www.cs.columbia.edu is 100% disrupted in mainland China, based on GreatFire's live Great Firewall measurements.
Why is www.cs.columbia.edu blocked in mainland China?
Access is unreliable — 100% of the last 1 conclusive tests showed interference.
Since when has www.cs.columbia.edu been blocked?
GreatFire has recorded interference with www.cs.columbia.edu from mainland China since 2014-05-06.
How can I access www.cs.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.cs.columbia.edu.
http://www.cs.columbia.edu · JSON