Can you open b2.t28.net:81 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.
2014first tested
3 mo agolast tested
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Frequently asked questions
Is b2.t28.net:81 blocked in mainland China right now?
As of the last test on 2026-05-08, b2.t28.net:81 is not resolvable from anywhere we test in mainland China, based on GreatFire's live Great Firewall measurements.
http://b2.t28.net:81 · JSON