viewdns.info
Mixed
Results vary across viewdns.info: of 13 URLs tested, 1 is blocked, 9 are disrupted some of the time and 3 load normally. The Great Firewall resets the connection and silently drops its packets so requests time out. 475 tests have been run under this domain since 2012-09-24, the most recent on 2026-08-07.
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.
The site itself
http://viewdns.infoNot blockedhttps://viewdns.infoIntermittenthttp://www.viewdns.infoas of 2026Intermittenthttps://www.viewdns.infoas of 2026IntermittentPages and subdomains (9)
http://viewdns.info/iranfirewallIntermittenthttp://viewdns.info/chinesefirewallIntermittenthttps://viewdns.info/chinesefirewallas of 2026Intermittenthttp://viewdns.info/chinesefirewall/?domain=nytimes.comIntermittenthttp://viewdns.info/chinesefirewall/?domain=facebook.comas of 2026Not blockedhttps://viewdns.info/chinesefirewall/?domain=wikileaks.chIntermittenthttp://www.viewdns.info/iranfirewallas of 2026Intermittenthttp://www.viewdns.info/chinesefirewallas of 2026Not blockedhttp://www.viewdns.info/chinesefirewall/?domain=en.greatfire.orgBlockedAbout viewdns.info and the Great Firewall
Results vary across viewdns.info: of 13 URLs tested, 1 is blocked, 9 are disrupted some of the time and 3 load normally. The Great Firewall resets the connection and silently drops its packets so requests time out. 475 tests have been run under this domain since 2012-09-24, the most recent on 2026-08-07.
Plain HTTP and HTTPS differ here: http://viewdns.info is not blocked, https://viewdns.info is intermittent. 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.
A VPN or another circumvention tool routes the request outside mainland China, past the filtering that blocks viewdns.info. 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 .info domainsEvery tested URL under viewdns.info
Each URL's status is its verdict over the last 90 days, the same one its own page headlines.