dynamicdns.biz
Mixed
Results vary across dynamicdns.biz: of 6 URLs tested, 2 are blocked, 1 loads normally and 3 have no conclusive recent result. The site itself, http://dynamicdns.biz, loads normally. The Great Firewall poisons its DNS, silently drops its packets so requests time out and resets the connection. 178 tests have been run under this domain since 2015-03-17, the most recent on 2026-05-13.
The site itself
http://dynamicdns.bizas of 2026Not blockedPages and subdomains (5)
http://515.dynamicdns.bizas of 2026Blockedhttp://395.dynamicdns.bizBlockedhttp://f3g4.dynamicdns.bizNot enough datahttp://f3g4.dynamicdns.biz/m3Not enough datahttp://f3g4.dynamicdns.biz/zfNot enough dataAbout dynamicdns.biz and the Great Firewall
Results vary across dynamicdns.biz: of 6 URLs tested, 2 are blocked, 1 loads normally and 3 have no conclusive recent result. The site itself, http://dynamicdns.biz, loads normally. The Great Firewall poisons its DNS, silently drops its packets so requests time out and resets the connection. 178 tests have been run under this domain since 2015-03-17, the most recent on 2026-05-13.
A VPN or another circumvention tool routes the request outside mainland China, past the filtering that blocks dynamicdns.biz. 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
Most-blocked .biz domainsEvery tested URL under dynamicdns.biz
Each URL's status is its verdict over the last 90 days, the same one its own page headlines.