CoDeeN Proxy

CoDeeN is a Content Distribution Network (CoDeeN) built by a group at the princeton university. It is a network of proxy servers, to deliver content to CoDeeN users.

You see that alot of proxy hunters remove CoDeeN proxy servers from their lists. This is because all the connections to CoDeeN proxy servers are logged, which helps to identify abusers of the system. Usually, people who use proxy servers, use them because they don't want to be logged, and want to stay anonymous. Some CoDeeN proxy servers also have limitations like not supporting downloading of files, visiting protected websites (SSL), and others, which are only available to CoDeeN users.

Also, the user have to enter the verifications numbers from an image after using the proxy for some time, which prevents the use of the network by applications.