Part of artofios.cnAll clear3 tested URLs
Can you open http://www.artofios.cn/udid.php from mainland China?
N/A.
This domain doesn't resolve anywhere we test — including our control outside mainland China — so it appears inactive or unregistered rather than blocked.
Same address over HTTPS:https://www.artofios.cn/udid.phpNot 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.
2024first tested
8 d agolast tested
Loading…
Frequently asked questions
Is http://www.artofios.cn/udid.php blocked in mainland China right now?
As of the last test on 2026-08-16, http://www.artofios.cn/udid.php is not resolvable from anywhere we test in mainland China, based on GreatFire's live Great Firewall measurements.
http://www.artofios.cn/udid.php · JSON