Can you open https://ctyjhu.org/online/courseaccess.cfm?course=AL2 from mainland China?
Sometimes.
Access is unreliable — 100% of the last 1 conclusive tests showed interference.
Access ctyjhu.org with GreatFireVPN →Frequently asked questions
Is https://ctyjhu.org/online/courseaccess.cfm?course=AL2 blocked in mainland China right now?
As of the last test on 2026-08-20, https://ctyjhu.org/online/courseaccess.cfm?course=AL2 is 100% disrupted in mainland China, based on GreatFire's live Great Firewall measurements.
Why is https://ctyjhu.org/online/courseaccess.cfm?course=AL2 blocked in mainland China?
Access is unreliable — 100% of the last 1 conclusive tests showed interference.
Since when has https://ctyjhu.org/online/courseaccess.cfm?course=AL2 been blocked?
GreatFire has recorded interference with https://ctyjhu.org/online/courseaccess.cfm?course=AL2 from mainland China since 2017-01-30.
How can I access https://ctyjhu.org/online/courseaccess.cfm?course=AL2 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 ctyjhu.org.
https://ctyjhu.org/online/courseaccess.cfm?course=AL2 · JSON