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Global Carrier Selects Zayo for UK Dark Fiber

Press Release

Solution leverages Zayo’s high capacity infrastructure

BOULDER, Colo. –
A major global carrier has selected Zayo Group Holdings, Inc. (NYSE:
ZAYO) for dark fiber infrastructure in the UK. The solution includes
1,100 miles (1,800 km) of dark fiber to connect several data centers
across the UK Zayo’s UK network extends from Glasgow and Edinburgh in
the north, to Birmingham and Manchester and includes dense metro fiber
in London.

The global carrier is pursuing a high-capacity, low-latency
infrastructure in the UK to support current bandwidth demand, grow its
customer base and prepare for 5G. Zayo was selected based on its ability
to provide a solution that can evolve with customer requirements,
including low latency, agility and scalability. The dark fiber solution
represents the first phase of a multi-phase mobile infrastructure
project for the customer.

“We have a strong relationship with this carrier and have worked closely
with them to provide a dark fiber solution that delivers high
performance and low latency to support a growing volume of data
traffic,” said Annette Murphy, managing director of Europe at Zayo. “The
carrier is relying on the infrastructure as a key element of its
strategic growth and densification efforts.”

Mobile operators in Europe are implementing network upgrades to
accommodate unprecedented data demand from a proliferation of devices.
Densifying the terrestrial network optimizes spectrum, improving
capacity and performance.

For more information about Zayo, please visit

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
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 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

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