Question how Lookup Works

[cash22509]

Hi,

I found this demo site for GSB http://thejaswi.info/projects/safe_browsing/
and tried to check this URL http://malware.testing.google.test/testing/malware/
to test it and I got a match.

The question is I tried to get the Md5 of the URL (including the http://
and trailing back slash) and tried and searching it manually from the
list and I got nothing. I wonder which string from that URL got a
match when converted to Md5? I ask because I want to understand more
on how a program match a specific URL.

Thanks