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Zayo Provides Extensive Fiber Connectivity in Texas

Press Release

Customer momentum enables further network expansion

BOULDER, Colo. –
Driven by customer demand, Zayo Group Holdings (NYSE: ZAYO) has
significantly expanded its infrastructure in the Texas Triangle, the
megaregion that includes Houston, San Antonio, Austin and Dallas/Ft.
Worth, over the past two years. Zayo has almost tripled its network
footprint in Texas and increased its customer base by 33 percent to more
than 450 customers.

The expansion has largely been driven by several major customer
contracts, including fiber-to-the-tower (FTT) builds in San Antonio and
Austin for a wireless
provider
, dark fiber for the
state’s fifth largest city
and dark fiber for a regional
school district
.

Zayo has recently signed an additional customer contract that will
further expand the company’s extensive fiber network in San Antonio by
approximately 25 miles. The build will enable diverse, high-fiber count
access to Texas Research Park and the Westover Hills areas. The project
leverages in-place network from the 2016 FTT buildout and complements
fully diverse routes between Austin and San Antonio.

The Texas Triangle represents approximately 75 percent of the Texas
economy and is a growing center for technology, energy, finance,
transportation and enterprise. It is home to more than 50 Fortune 500
companies.

“The density of our network provides a significant advantage for our
public and private sector customers in Texas,” said Jack Waters, CTO and
president of Fiber Solutions at Zayo. “Our continued expansion
underscores our commitment to the state and provides opportunity for
additional customers who can benefit from our fiber network, data center
footprint and extensive connectivity across our global network.”

For more information on Zayo’s network, 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
127,000-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 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, Corporate
Communications
303-577-5897
press@www.zayo.com
or
Investors:
Brad
Korch, Investor Relations
720-306-7556
IR@www.zayo.com