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Chinese Firewall Test

Checks whether a site is blocked by the Great Firewall of China. This test checks across a number of servers from various locations in mainland China to determine if access to the site provided is possible from behind the Great Firewall of China.

This test checks for symptoms of DNS poisoning, one of the more common methods used by the Chinese government to block access to websites.
Top 10 tested domains:

URL / Domain:

Chinese firewall test results for

Testing if hostname is DNS poisoned

Expected value of DNS A records:

LocationLookup ResultStatus
Inner Mongolia
Heilongjiang Province

No servers were able to reach your site on the correct IP address. This means that any URL's on this host are most likely NOT accessible from within mainland China.

Testing if URL is blocked over HTTP(s)
HTTP ResponseStatus
Connection timed out.

This URL appears to be blocked in China.

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