Part of quad9.netMixed17 tested URLs
Can you open http://dns.quad9.net/dns-query from mainland China?
Not sure yet.
There isn't enough recent data to reach a verdict.
Same address over HTTPS:https://dns.quad9.net/dns-queryIntermittent
The two are filtered by different means — an unencrypted request by the address and keywords it carries in the clear, an encrypted one by the server name in its TLS handshake — so one working while the other does not is normal.
2022first tested
3 mo agolast tested
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Frequently asked questions
Is http://dns.quad9.net/dns-query blocked in mainland China right now?
As of the last test on 2026-06-06, http://dns.quad9.net/dns-query is not enough data in mainland China, based on GreatFire's live Great Firewall measurements.
http://dns.quad9.net/dns-query · JSON