Northern Virginia Data Center Providers Select Zayo for Dark Fiber

BOULDER, Colo. –
Zayo Group Holdings, Inc. (NYSE: ZAYO) today announced it has signed
multiple contracts in the past three months to deliver dark fiber to
large data center providers in Northern Virginia. The providers will
rely on Zayo’s extensive dark fiber network to connect with other data
centers in the area.

With nearly 4,000 route miles of fiber in the Washington D.C./Northern
Virginia tech corridor, Zayo can provide the customers with connectivity
to more than 110 data centers, 1,200 on-net enterprise locations and 19
cloud destinations.

Also known as the Dulles Technology corridor, the area is one of the
nation’s largest centers for enterprise and technology, with a growing
concentration of cloud and data center providers. The corridor is also
the biggest internet exchange point in the world. Zayo is well
positioned to leverage its dense, interconnected fiber footprint to
serve the region.

“The agreements solidify Zayo as the leading fiber infrastructure
provider to data center facilities and large enterprises in this
corridor, also known as ‘data center alley’,” said Randy Dunbar, senior
vice president, Fiber Solutions East Region at Zayo. “We are
aggressively focused on demonstrating our position as the premier dark
fiber provider, both in the region and across the U.S. This scale, and
our infrastructure expertise, offers a compelling value proposition for
potential customers.”

For more information on Zayo, please 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
122,000-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 25, 2016. 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.

View source version on businesswire.com: http://www.businesswire.com/news/home/20170519005137/en/

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