doh.sb
Mostly blocked
18 of the 19 URLs we have a verdict for under doh.sb are blocked in mainland China; 1 are not. The site itself, https://doh.sb, is blocked. The Great Firewall silently drops its packets so requests time out, breaks its TLS handshake and blocks the connection outright. 253 tests have been run under this domain since 2021-09-02, the most recent on 2026-07-15.
The site itself
https://doh.sbas of 2026BlockedPages and subdomains (18)
https://doh.sb/dns-queryBlockedhttps://hk-hkg.doh.sbas of 2026Blockedhttps://jp-nrt.doh.sbas of 2026Blockedhttps://sg-sin.doh.sbas of 2026Blockedhttps://kr-sel.doh.sbBlockedhttps://ru-mow.doh.sbas of 2025Blockedhttps://jp-kix.doh.sbas of 2026Blockedhttp://jp-kix.doh.sb/dns-queryas of 2026Blockedhttps://ru-mow.doh.sb/dns-queryBlockedhttps://jp-nrt.doh.sb/dns-queryas of 2026Blockedhttps://sg-sin.doh.sb/dns-queryBlockedhttps://jp-kix.doh.sb/dns-queryas of 2026Blockedhttps://ee-tll.doh.sb/dns-queryas of 2026Blockedhttps://uk-lon.doh.sb/dns-queryas of 2026Blockedhttps://hk-hkg.doh.sb/dns-queryas of 2026Blockedhttps://ca-yyz.doh.sb/dns-queryBlockedhttps://kr-sel.doh.sb/dns-queryas of 2026Intermittenthttps://nl-ams2.doh.sb/dns-queryas of 2025BlockedAbout doh.sb and the Great Firewall
18 of the 19 URLs we have a verdict for under doh.sb are blocked in mainland China; 1 are not. The site itself, https://doh.sb, is blocked. The Great Firewall silently drops its packets so requests time out, breaks its TLS handshake and blocks the connection outright. 253 tests have been run under this domain since 2021-09-02, the most recent on 2026-07-15.
A VPN or another circumvention tool routes the request outside mainland China, past the filtering that blocks doh.sb. GreatFire runs GreatFire VPN; the Analyzer also tests the domains of many VPN and proxy providers, so you can check whether one is reachable before relying on it.
Elsewhere on the site
Each URL's status is its verdict over the last 90 days, the same one its own page headlines.