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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.
Chinese firewall test results for twitter.com
Expected value of DNS A records:
No servers were able to reach your site. This means that your site is most likely NOT accessible from within mainland China.
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