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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:
   1. github.com
   2. facebook.com
   3. google.com
   4. youtube.com
   5. wikileaks.ch
   6. twitter.com
   7. dropbox.com
   8. gmail.com
   9. wikipedia.org
   10. cnn.com

URL / Domain:
Chinese firewall test results for github.com
==============

Testing if hostname is DNS poisoned
--------------------------------------

Expected value of DNS A records:
192.30.252.129

LocationLookup ResultStatus
Beijing 192.30.252.131
fail
Shenzhen 192.30.252.129
ok
Inner Mongolia 192.30.252.131
fail
Heilongjiang Province 192.30.252.128
fail

Some of the servers used returned the correct DNS records but some didn't. This means that your site may NOT be accessible from all areas within mainland China. You should assume that a majority of Chinese users will NOT be able to reach your site.

Testing if URL is blocked over HTTP(s)
--------------------------------------
HTTP ResponseStatus
Connection reset.

This URL appears to be blocked in China.




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