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Webscale Company Selects Zayo to Connect Dublin Operations

Press Release

Deal future-proofs business bandwidth requirements

BOULDER, Colo. –
A global webscale company has selected Zayo Group Holdings, Inc. (NYSE:
ZAYO) to connect its European headquarters to data centers in Dublin,
Ireland.

The solution will connect the customer’s existing facilities on Zayo’s
T50 Metro network while securing capacity for future operations
currently being planned and built. It includes an additional 2.5km fiber
build to extend Zayo’s footprint into Profile Park, a leading business
location in Dublin. Zayo is also finalizing new routes in Dublin that
were announced
last fall
to meet the needs of companies that have a presence in
Dublin or are considering investment and relocation in Ireland.

“Dublin is experiencing rapid growth and has already become a key hub
for global companies with operations in Europe,” said Jack Waters,
president of Zayo Networks and COO. “This is an excellent illustration
of leveraging our embedded network to provide the customer with a
solution to meet their unique capacity needs.”

Zayo provides its full suite of products in Dublin, including dark
fiber, wavelengths, Ethernet and IP. Zayo’s diverse high-capacity
network offers the most direct routes from Dublin to London, Amsterdam
and Paris.

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

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
130,000-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 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.

Media:
Shannon Paulk, Corporate Communications
303-577-5897
press@www.zayo.com

Investors:
Brad
Korch
, Investor Relations
720-306-7556
IR@www.zayo.com