360Networks, a Seattle provider of fiber network and telecommunication services, has been acquired by Zayo Group in a deal of undisclosed size. It marks the 17th acquisition for Zayo in the past four years and the largest in the Louisville, Colorado company’s history.

360Networks was started by former Microsoft chief financial officer Greg Maffei, who had remained as chairman. It fell on tough times after the dot-com bust, filing for bankruptcy protection in 2002.

Its network now covers some 18,500 miles in the western U.S. and British Columbia.

“The combination with 360networks marks a new chapter for Zayo, one in which we emerge as a national provider of Bandwidth Infrastructure service,” said Dan Caruso, President and CEO of Zayo Group. “The near doubling of the network allows us to provide a greater range of solutions, both in terms of markets served and ability to interconnect services across the markets.”

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  • John Songya

    Please note that Greg Maffei did not start 360networks, he came on board from Microsoft several years after it had already been in operation. 

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