Remember that web-based tool to test whether your ISP is blocking BitTorrent that we linked to a couple weeks back? Thousands of broadband users around the world have tried it in the last couple of weeks. Well the results are in, and guess what? Comcast isn’t the only U.S. ISP with anti-P2P network management in place. Fellow cable provider Cox was also caught interrupting its subscribers’ BitTorrent uploads.

The Max Planck Institute for Software Systems, out of Germany, found that Cox interfered with roughly 50 percent of all measured transmissions. It also confirmed that Comcast is still actively blocking BitTorrent, despite numerous assurances to favor a protocol-neutral approach to network management. In fact, Comcast seems to be even stricter than Cox, disrupting roughly two-thirds of all uploads. Continue reading at

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