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International Carrier Selects Zayo for Wavelengths

Press Release

Solution Connects Data Centers Throughout U.S.

BOULDER, Colo. –
An international carrier has selected Zayo Group Holdings, Inc. (NYSE:
ZAYO) for an optical wavelengths solution. The carrier is among the
world’s largest based on number of subscribers.

The solution provides multiple wavelength routes connecting major data
centers throughout the U.S., supporting the carrier’s North American
expansion. The routes utilize Zayo’s embedded network, connecting the
customer’s existing and new points of presence (PoPs).

“We won this business by mobilizing to meet the provider’s service level
and aggressive installation requirements,” said Bruce Garrison, senior
vice president, Global Partners. “This is our first major sale to this
carrier, and we look forward to supporting them as they expand their
business in North America and Europe.”

Increasingly, Zayo is broadening its relationships with international
carriers and subsea cable consortiums. Late last year, the New Cross
Pacific US Backhaul Group, comprised of Asian carriers, selected
for a private dedicated network for diverse backhaul from its
U.S. landing station in Hillsboro, Oregon.

Zayo’s Global Partners is focused on strategic partnerships around the
world to facilitate end-to-end global bandwidth solutions. For more
information, please visit

About Zayo Group

Zayo Group Holdings, Inc. (NYSE: ZAYO) provides communications
infrastructure solutions, 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
128,200-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 users with flexible,
customized solutions and self-service through Tranzact, an innovative
online platform for managing and purchasing bandwidth. For more
information, visit

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 22, 2017. 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


Zayo Group Holdings, Inc.

Pat Nichols,
Corporate Communications
, 720-306-7556
Investor Relations