Press release

CyrusOne Inc. to Present at Upcoming Investor Conferences

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CyrusOne Inc. (NASDAQ: CONE), a premier global data center REIT, today
announced that it will be presenting at the following investor
conferences:

Cowen and Company 47th Annual Technology, Media & Telecom
Conference, being held May 29-30, 2019, at the Lotte New York Palace
Hotel in New York, NY. Jonathan Schildkraut, Chief Strategy Officer,
will be presenting at 9:05 am Eastern Time on Wednesday, May 29.

REITweek 2019: NAREIT’s Investor Forum, being held June 4-6, 2019, at
the New York Hilton Midtown in New York, NY. Gary Wojtaszek, President
and Chief Executive Officer, will be presenting at 8:45 am Eastern Time
on Tuesday, June 4.

Nasdaq’s 40th Investor Conference, being held June 13, 2019,
at the May Fair Hotel in London, UK. Tesh Durvasula, President, Europe,
will be presenting at 9:15 am British Summer Time on Thursday, June 13.

Live webcasts of the events will be available in the “Investors / Events
& Presentations” section of the Company’s website at http://investor.cyrusone.com/events.cfm.
Replays will be available for 90 days following the Cowen and NAREIT
presentations and for 12 months following the Nasdaq presentation.

About CyrusOne

CyrusOne (NASDAQ: CONE) is a high-growth real estate investment trust
(REIT) specializing in highly reliable enterprise-class, carrier-neutral
data center properties. The Company provides mission-critical data
center facilities that protect and ensure the continued operation of IT
infrastructure for approximately 1,000 customers, including more than
210 Fortune 1000 companies.

With a track record of meeting and surpassing the aggressive
speed-to-market demands of hyperscale cloud providers, as well as the
expanding IT infrastructure requirements of the enterprise, CyrusOne
provides the flexibility, reliability, security, and connectivity that
foster business growth. CyrusOne offers a tailored, customer
service-focused platform and is committed to full transparency in
communication, management, and service delivery throughout its more than
45 data centers worldwide. Additional information about CyrusOne can be
found at www.CyrusOne.com.