Zayo Announces Two New Long Haul Fibre Routes

New routes to connect Columbus to Ashburn and Dallas to Atlanta

BOULDER, Colo. – November 2, 2018 – Zayo Group Holdings, Inc. (NYSE: ZAYO) today announced plans for two new unique, low-latency long haul dark fibre networks from Columbus, Ohio to Ashburn, Virginia and Dallas, Texas to Atlanta, Georgia. Supported by a signed commitment, the expansions are expected to be attractive to additional strategic customers looking for wavelength and fibre connectivity between these cities.

The Columbus to Ashburn network expansion will add approximately 400 route miles of high-capacity fibre and is expected to provide the lowest latency between the two cities. The route will also provide Zayo customers with the lowest latency route between Chicago and Ashburn, as it will bypass major network congestion and overlap points. With its central location and proximity to major population centres, Columbus has become an increasingly important data centre hub. Ashburn and Northern Virginia known as “Data Centre Alley,” has the largest concentrations of data centres in the world. The route will traverse West Virginia, providing a new fibre backbone across the state.

The 870-mile Dallas to Atlanta route will connect these two key metro markets with the most direct, lowest latency route to date. Dallas and Atlanta are top 10 populations centres and top 10 data centre markets, with Fortune 500 headquarters. Both cities are strategic markets for Zayo, with dense and growing metro fibre footprints driven in part by extensive fibre-to-the-tower (FTT) builds.

“To meet continued demand for dark fibre, we are building unique new routes between strategic markets,” said Jack Waters, CTO and president of Fibre Solutions at Zayo. “These expansions will provide superior options for direct, high-capacity, latency-sensitive paths connecting data and population centres to cloud platforms and end users.”

Construction on the new routes is expected to begin early next year.

For more information on Zayo, please visit zayo.com.

About Zayo Group

Zayo Group Holdings, Inc. (NYSE: ZAYO) provides communications infrastructure solutions, including fibre and bandwidth connectivity, colocation and cloud infrastructure 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 128,900-mile network in North America and Europe includes extensive metro connectivity to thousands of buildings and data centres. In addition to high-capacity dark fibre, wavelength, Ethernet and other connectivity solutions, Zayo offers colocation and cloud infrastructure in its carrier-neutral data centres. Zayo provides users with flexible, customized solutions and self-service through Tranzact, an innovative online platform for managing and purchasing bandwidth. 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 August 24, 2018. 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.