.../external/http://example.com
 .../external?=http%3A%2F%2Fexample.com
 .../external/ht.W28Mw/ZjJ2

##</code><code>##

http://www.google.com/safebrowsing/diagnostic?site=http%3A%2F%2Fexample.com
http://www.google.com/interstitial?url=http%3A%2F%2Fexample.com