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Zayo Named Most Successful Company Founded in 2007

Company featured in MSN Money, along with other well-known technology leaders

BOULDER, Colo. – May 4, 2016 – MSN Money identified Zayo Group Holdings, Inc. (NYSE: ZAYO) as the most successful company founded in 2007 in its April feature, “The Most Successful Company the Year You Were Born.” The MSN feature listed Cisco, Starbucks, Amazon, Google and Tesla as the most successful companies in their birth years. Dan Caruso, Chairman and CEO of Zayo, and a small team of entrepreneurs including Matt Erickson, co-COO, and Sandi Mays, EVP of IT and Tranzact, founded Zayo in 2007.

“Dozens of fiber orphans — companies that had fiber in isolated markets — were being ignored by private equity investors and strategic acquirers,” explained Erickson. “Our strategy was to consolidate them into a new type of telecom provider — one focused on providing communications infrastructure to content, cloud, big data, and wireless carriers.”

According to Cisco’s Visual Networking Index (VNI), Internet traffic has increased fivefold over the past five years and shows no sign of slowing down. Growth in enterprise traffic over dedicated networks, Zayo’s sweet spot, is expected to grow 20 percent each year for the next three years. The company has eclipsed $1.4 billion in annual revenue and $800 million in EBITDA. Zayo went public in October 2014, and today has an enterprise value of over $10 billion.

“The next 10 years will be no less exciting, as the bandwidth explosion will continue to enable innovation in entertainment, healthcare, commerce, and scientific discovery,” emphasized Caruso. “Our talented team, incredible assets, and entrepreneurial approach position us to accelerate our customers’ pace of innovation.”

Today, Zayo’s fiber footprint exceeds 110,000 route miles and extends to more than 35 countries. Through its 57 data centers, Zayo provides interconnection, colocation, and cloud services. More than 7,000 customers, including some of the biggest names in wireless, media, internet, healthcare and finance, rely on Zayo’s communications infrastructure to deliver their content to homes and businesses across the globe.

For more information on Zayo’s success over the past decade, please visit http://www.zayo.com/zayo-enters-10th-year-in-business/.

About Zayo Group

Zayo Group Holdings, Inc. (NYSE: ZAYO) provides communications infrastructure services, including fiber and bandwidth connectivity, colocation and cloud services to the world’s leading businesses. Customers include wireless and wireline carriers, media and content companies and finance, healthcare and other large enterprises. Zayo’s 110,000-mile network in North America and Europe includes extensive metro connectivity to thousands of buildings and data centers. In addition to high-capacity dark fiber, wavelength, Ethernet and other connectivity solutions, Zayo offers colocation and cloud services in its carrier-neutral data centers. Zayo provides clients with flexible, customized solutions and self-service through Tranzact, an innovative online platform for managing and purchasing bandwidth and services. For more information, visit zayo.com.

Forward Looking Statements

This press release contains a number of forward-looking statements. Words, and variations of words such as “believe,” “expect,” “plan,” “continue,” “will,” “should,” and similar expressions are intended to identify our forward-looking statements. No assurance can be given that future results expressed or implied by the forward-looking statements will be achieved and actual results may differ materially from those contemplated by the forward-looking statements. These forward-looking statements involve risks and uncertainties, many of which are beyond our control. For additional information on these and other factors that could affect our forward-looking statements, see our risk factors, as they may be amended from time to time, set forth in our filings with the SEC, including our 10-K dated September 18, 2015. We disclaim and do not undertake any obligation to update or revise any forward-looking statement in this press release, except as required by applicable law or regulation.