GFW poisons DNS resolution

I have heard about GFW purposely poison DNS information but as I am in Hong Kong, I have no way of testing this scenario. Thanks to websitepulse which offers a facility for testing accessibility to websites behind China GFW.  The URL is at:

http://www.websitepulse.com/help/testtools.china-test.html

My test on access to www.twitter.com is dumped in the picture below. The fake return IP address is 37.61.54.158. Actually 37.0.0.0/8 Class A range is not assigned yet so there is no route to this IP address.