The web application is simulating a Bittorrent transfer between the user’s computer and the web server the application is running from to determine if the ISP is tampering with the Bittorrent traffic. The test can detect if the ISP is throttling all Bittorrent traffic, throttling all traffic at well known Bittorrent ports or throttling Bittorrent traffic at well known Bittorrent ports.

The user has the choice to perform a full test that takes roughly seven minutes or a fast test that lasts four minutes. The servers seem to be overrun currently by worldwide users and it might happen that you will receive a message that the servers are currently busy.

If you take a look at the results map you will notice a high concentration of ISPs that are throttling Bittorrent traffic in the United States and Singapore.

All blocked transfers were observed in the upstream direction (i.e., when the client host attempted to upload data to one of our Glasnost servers). No host observed blocking for downstream BitTorrent transfers.

We found widespread blocking of BitTorrent transfers only in the U.S. and Singapore. Interestingly, even within these countries, blocking was observed by hosts belonging to a handful of large ISPs.

The Danes and Brits seem to have tested the web application intensively because their countries are almost not visible anymore. What about your ISP, is it throttling Bittorrent traffic ?