All of netlab.sh.cnAll clear3 tested URLs
Can you open https://netlab.sh.cn from mainland China?
Not sure yet.
There isn't enough recent data to reach a verdict.
Same address over HTTP:http://netlab.sh.cnNot blocked
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.
2026first tested
2 h agolast tested
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Frequently asked questions
Is https://netlab.sh.cn blocked in mainland China right now?
As of the last test on 2026-09-25, https://netlab.sh.cn is not enough data in mainland China, based on GreatFire's live Great Firewall measurements.
https://netlab.sh.cn · JSON