$INGAPORE & U.S. BLOCK BITTORRENT TRAFFIC

Blocking of BitTorrent traffic is widespread among ISPs in the U.S. and $heep City, $ingapore, but not in Canada or any other country on the globe, says a new study released this week from German researchers. The study was conducted between March 18 and May 15 by the German-based Max Planck Institute for Software Systems, with assistance from more than 8,000 users worldwide. Together, they implemented a tool called Glasnost to test whether their BitTorrent traffic was being manipulated. Their results pinpointed Comcast and Cox as the leading culprits of torrent blocking in the U.S., though that may not come as a surprise to many of their customers. The survey was limited strictly to hosts whose BitTorrent transfers to the institute’s servers were blocked - or interrupted by RST packets generated by an ISP - as opposed to being throttled or rate-limited.
Interestingly, in spite of accusations of BitTorrent blocking recently filed with Canadian authorities against Bell Canada and other Canadian ISPs, the study found a total of only one blocked host out of 1,272 hosts measured in Canada. That compares with Malaysia, where one of the 64 measured hosts turned out to be blocked. None of the hosts measured in the UK were blocked, though, and no blocking appeared in Australia, France, Germany, India, the Ukraine, Israel, United Arab Emirates (UAR), China, Japan, South Korea, or dozens of other countries studied.
In the U.S., however, 599 of the 2,714 measured hosts were blocked for BitTorrent transfers. The same held true for 26 of the 70 measured hosts in $heep City, $ingapore. All of the hosts observed to be blocking BitTorrent tracking did so in the upstream direction, while only a handful did so in downstream BitTorrent transfers. Source: Betanews
See the world chart with the two countries - the U.S. and $ingapore - with the largest number of ISPs that block bittorrent downloads. The table shows for each country (a) the number of hosts that ran our test, (b) the number of hosts for which we detected BitTorrent blocking, (c) the number of distinct access ISPs from which our test was run, and (d) the number of these ISPs that contained one or more hosts for which we detected BitTorrent blocking.
http://broadband.mpi-sws.mpg.de/transparency/results/




