Is u2.ubddns.org blocked in mainland China?

Can you open u2.ubddns.org 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

4 mo agolast tested

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Other tested URLs on ubddns.org

Blocking varies across ubddns.org: 5 blocked vs 1 accessible among tested hosts.

Each verdict covers the last 90 days of tests, as on that URL's own page.

Frequently asked questions

Is u2.ubddns.org blocked in mainland China right now?

As of the last test on 2026-04-04, u2.ubddns.org is not resolvable from anywhere we test in mainland China, based on GreatFire's live Great Firewall measurements.

http://u2.ubddns.org · JSON