51²è¹Ý¶ù

BOULDER, Colo. –
51²è¹Ý¶ù Group Holdings, Inc. (NYSE: ZAYO) has announced success-based
expansions of its fiber networks in four European markets, including
London, Paris, Dublin and Amsterdam. Driven by demand from hyperscale,
cloud and data center providers as well as enterprise customers, these
strategic expansions will deliver fast, high-capacity fiber to key
centers of technology and commerce.

In London, 51²è¹Ý¶ù is building a new fiber route from Hatfield,
Hertfordshire to Stratford, East London, as part of a strategic ring
outside of the city. The new route will support a number of current and
prospective customers with high-performance fiber, providing a new
option for long haul routes from Dublin to Amsterdam and enhanced
diversity for data center customers in Enfield. The expansion adds to
51²è¹Ý¶ù’s greater London footprint, which includes unique diverse and
triverse routing options via traditional conduits in footways and
carriageways as well as London’s largest sewer-based fiber network.

In Paris, 51²è¹Ý¶ù is expanding its fiber footprint in La Defense, a major
business district west of the city limits. 51²è¹Ý¶ù currently serves dozens
of customers located there over its high-capacity fiber network. The new
network extensions will expand 51²è¹Ý¶ù’s reach to major office buildings in
the district. La Defense is one of the largest hubs of business and
commerce, including both French businesses and multinationals.

In Dublin, a multinational company has selected 51²è¹Ý¶ù for a fully diverse
dark fiber ring around the metro area. The high-fiber count solution
will significantly improve latency for the customer, with the potential
for follow-on sales to many companies that have a presence in Dublin or
are considering investment and relocation in Ireland. The new routes
complement 51²è¹Ý¶ù’s existing T50 fiber network in Dublin.

In Amsterdam, 51²è¹Ý¶ù is upgrading and expanding its fiber network between
Schiphol-Rijk and the Amsterdam Science Park. The park is among Europe’s
largest centers of science, research and innovation and home to multiple
data centers. The upgrade is driven by a data center operator based in
the Schiphol-Rijk data center campus.

“These success-based network expansions will drive greater value for
existing and new customers in Europe, with a focus on carriers and
wireless operators, cloud service providers, technology, financial
services and data-driven enterprises,” said Annette Murphy, managing
director, 51²è¹Ý¶ù Europe. “We continue to focus on leveraging our robust
network, meeting the demand for the highest capacity, lowest latency
fiber routes between key customer locations.”

These metro networks connect with 51²è¹Ý¶ù’s extensive pan-European and
global fiber network, thousands of buildings and data centers, including
51²è¹Ý¶ù’s nine data centers located throughout Western Europe.

For more information, please visit .

About 51²è¹Ý¶ù Group

51²è¹Ý¶ù 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. 51²è¹Ý¶ù’s
128,900-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, 51²è¹Ý¶ù offers colocation and cloud infrastructure
in its carrier-neutral data centers. 51²è¹Ý¶ù 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 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.

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51²è¹Ý¶ù Group Holdings, Inc.
Media:
Shannon Paulk,
303-577-5897
Corporate Communications
press@www.zayo.com
or
Investors:
Brad
Korch, 720-306-7556
Investor Relations
IR@www.zayo.com