Can you open https://odvr.nic.cz/dns-query from mainland China?
Sometimes.
No recent testsVerdict from 2026-05-09 · 4 mo ago
As of the last test on 2026-05-09 — 4 mo ago — it was partly disrupted in mainland China. We haven't tested it since, so this may have changed.
Access odvr.nic.cz with GreatFireVPN →Frequently asked questions
Is https://odvr.nic.cz/dns-query blocked in mainland China right now?
We haven't tested https://odvr.nic.cz/dns-query in the last 90 days. As of the last test on 2026-05-09 (4 mo ago), it was partly disrupted in mainland China. Use the Test now button on this page for a fresh measurement.
Why is https://odvr.nic.cz/dns-query blocked in mainland China?
As of the last test on 2026-05-09 — 4 mo ago — it was partly disrupted in mainland China. We haven't tested it since, so this may have changed.
Since when has https://odvr.nic.cz/dns-query been blocked?
GreatFire has recorded interference with https://odvr.nic.cz/dns-query from mainland China since 2021-03-10.
How can I access https://odvr.nic.cz/dns-query 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 odvr.nic.cz.
https://odvr.nic.cz/dns-query · JSON