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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 yahoo.com
==============

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

Expected value of DNS A records:
206.190.36.45
98.138.253.109
98.139.183.24

LocationLookup ResultStatus
Beijing 206.190.36.45
98.138.253.109
98.139.183.24
ok
Shenzen 206.190.36.45
98.138.253.109
98.139.183.24
ok
Inner Mongolia 206.190.36.45
98.138.253.109
98.139.183.24
ok
Heilongjiang Province 206.190.36.45
98.138.253.109
98.139.183.24
ok

All servers were able to reach your site. This means that the hostname itself is accessible from within mainland China.

Testing if URL is blocked over HTTP(s)
--------------------------------------
HTTP ResponseStatus
error

This URL appears to be accessible from mainland China.



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