Can you open 163.zzux.com:81 from mainland China?
No.
It's blocked — 100% of the last 2 conclusive tests failed in mainland China.
Access 163.zzux.com:81 with GreatFireVPN →2014first tested
2/2blocked · last 90 days
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Frequently asked questions
Is 163.zzux.com:81 blocked in mainland China right now?
As of the last test on 2026-05-06, 163.zzux.com:81 is 100% blocked in mainland China, based on GreatFire's live Great Firewall measurements.
Why is 163.zzux.com:81 blocked in mainland China?
It's blocked — 100% of the last 2 conclusive tests failed in mainland China.
Since when has 163.zzux.com:81 been blocked?
GreatFire has recorded interference with 163.zzux.com:81 from mainland China since 2014-08-26.
How can I access 163.zzux.com:81 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 163.zzux.com:81.
http://163.zzux.com:81 · JSON