Part of 4399.comMixed18 tested URLs
Can you open https://u.4399.com/kf/im/zcdl?ref=dev4399 from mainland China?
Yes.
All 1 recent conclusive tests connected normally.
2023first tested
0/1disrupted · last 90 days
1 mo agolast tested
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Frequently asked questions
Is https://u.4399.com/kf/im/zcdl?ref=dev4399 blocked in mainland China right now?
As of the last test on 2026-07-20, https://u.4399.com/kf/im/zcdl?ref=dev4399 is not blocked in mainland China, based on GreatFire's live Great Firewall measurements.
https://u.4399.com/kf/im/zcdl?ref=dev4399 · JSON