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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:
192.30.252.128

LocationLookup ResultStatus
Beijing 192.30.252.131
fail
Shenzen 192.30.252.131
fail
Inner Mongolia 192.30.252.131
fail
Heilongjiang Province 192.30.252.131
fail

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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