Can I Get the Logs to Show Me When a Site is Blocked by CC Proxy Server Software

In the log file you will find 2 types of logs as bellow:
192.168.1.213 - YOUNGZSOFT [16/Mar/2011:10:02:02 +0800] "GET http://www.google.ca/ HTTP/1.0" 200 13044 "HTTP" ""
192.168.1.213 - YOUNGZSOFT [16/Mar/2011:10:02:31 +0800] "GET http://www.yahoo.com/ HTTP/1.0" 403 0 "HTTP" ""
200 means successfully while 403 means blocked.