Five years ago, Internet traffic was, for the most part, managed by tier 1 providers like AT&T, Verizon, Level 3 Communications and Global Crossing, all of which connected to thousands of tier 2 networks and regional providers. Today, that has changed. Now, instead of traffic being distributed among tens of thousands of networks, only 150 networks control some 50% of all online traffic. Among these new Internet superpowers, it's no surprise to find Google listed. In fact, the search giant accounts for the largest source (6%) of all Internet traffic worldwide.

This data comes from a new report put out by Arbor Networks, who has just completed a two-year study of 256 exabytes of Internet traffic data, the largest study of global traffic since the start of the commercial Internet in the mid-1990's.

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