Can you open https://cn.archive.ubuntu.com/ubuntu from mainland China?
Sometimes.
Access is unreliable — 100% of the last 1 conclusive tests showed interference.
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 https://cn.archive.ubuntu.com/ubuntu blocked in mainland China right now?
As of the last test on 2026-08-17, https://cn.archive.ubuntu.com/ubuntu is 100% disrupted in mainland China, based on GreatFire's live Great Firewall measurements.
Why is https://cn.archive.ubuntu.com/ubuntu blocked in mainland China?
Access is unreliable — 100% of the last 1 conclusive tests showed interference.
Since when has https://cn.archive.ubuntu.com/ubuntu been blocked?
GreatFire has recorded interference with https://cn.archive.ubuntu.com/ubuntu from mainland China since 2024-12-11.
How can I access https://cn.archive.ubuntu.com/ubuntu 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 cn.archive.ubuntu.com.
https://cn.archive.ubuntu.com/ubuntu · JSON