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Zayo to Host Third Quarter Fiscal Year 2017 Conference Call May 9, 2017

Press Release

BOULDER, Colo. –
Zayo Group Holdings, Inc. (“Zayo” or the “Company”) (NYSE: ZAYO) invites
you to listen to its earnings call for the third quarter fiscal year
2017 ended March 31, 2017 on Tuesday, May 9, 2017.

When: Tuesday, May 9, 2017 @ 3:00 p.m. MDT/5:00 p.m. EDT

Click this link to register and view the Webcast:

Dial-in information for the audio portion of the Webcast: U.S.
International: 1-412-317-5415.

During the call, the Company will review an earnings presentation that
summarizes the financial, operational and commercial highlights of the
quarter. This presentation and the earnings supplement will be available
after the call through Zayo’s website at:

If you have any questions, please contact Zayo Investor Relations at
720.306.7556 or

About Zayo Group

Zayo Group Holdings, Inc. (NYSE: ZAYO) provides communications
infrastructure services, including fiber 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
126,000-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 infrastructure
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 Group Holdings, Inc.
Shannon Paulk,
Corporate Communications
Korch, 720-306-7556
Investor Relations