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

URL / Domain:
Chinese Firewall Test results for yahoo.com
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Expected value of DNS A records:
72.30.35.10 72.30.35.9 98.137.246.7 98.137.246.8 98.138.219.231 98.138.219.232

LocationLookup ResultStatus
Beijing72.30.35.10 72.30.35.9 98.137.246.7 98.137.246.8 98.138.219.231 98.138.219.232ok
Shenzhen72.30.35.10 72.30.35.9 98.137.246.7 98.137.246.8 98.138.219.231 98.138.219.232ok
Inner Mongolia72.30.35.10 72.30.35.9 98.137.246.7 98.137.246.8 98.138.219.231 98.138.219.232ok
Heilongjiang Province72.30.35.10 72.30.35.9 98.137.246.7 98.137.246.8 98.138.219.231 98.138.219.232ok
Yunnan Province72.30.35.10 72.30.35.9 98.137.246.7 98.137.246.8 98.138.219.231 98.138.219.232ok

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