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Zayo Densifies Mobile Infrastructure Footprint in Minneapolis

Press Release

Capacity to support continued demand in metro area

BOULDER, Colo. –
Zayo Group Holdings, Inc. (NYSE: ZAYO) is working with four major
wireless carriers to increase capacity to accommodate continued demand
in the Minneapolis area. These projects further enhance Zayo’s dense
footprint in Minnesota, which includes more than 8,000 route miles
across the state and more than 5,000 metropolitan route miles.
Businesses in multiple sectors are leveraging this expanded network,
with demand expected to continue.

The additional capacity will also meet the anticipated mobile traffic
generated during Super Bowl 52. Last year’s Super Bowl in Houston, also
supported by Zayo’s mobile infrastructure, broke
the single-day wireless data use mark
, with at least 37.6 terabytes
of data used. An estimated half of the 70,000 fans successfully shared
messages, photos and videos over their mobile phones.

Zayo is working to install and turn up cell towers, small cells and DAS
antennas associated with signed contracts from four major wireless
carriers over the past two years. This infrastructure will be used to
densify existing mobile networks so carriers can meet the need for
capacity and speed in high-usage areas, both for the Super Bowl and on a
permanent basis. Zayo’s mobile infrastructure solutions include fiber
backhaul and fronthaul, as well as full turnkey implementation,
including RF design, site acquisition, permitting and installation of
equipment.

The infrastructure is also needed to support growing traffic in the
Minneapolis metro area and prepare for 5G. According to the Metropolitan
Council
, the population in Minneapolis has grown approximately 10
percent since 2010. The metro area is home to 16 Fortune 500 companies
and a growing base of enterprise and emerging growth companies. The
Super Bowl, which will be held February 4 at U.S. Bank Stadium, is
expected to draw more than one million people to the area for the game
and the week’s events.

“Our local team has been working aggressively throughout the fall to
turn up these mobile sites in preparation for Super Bowl 52,” said Randy
Brogle, senior vice president, Dark Fiber Solutions, Central Region at
Zayo. “This infrastructure will improve speed and capacity in the metro
Minneapolis area not only for the event but for the long-term benefit of
the residents and businesses.”

For more information on Zayo’s network, visit zayo.com.

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.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 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
regulation.

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Zayo 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