CyrusOne
Corporate brand
UnclaimedA global data center owner and operator providing carrier-neutral colocation, interconnection, and peering services.
Last updated August 21, 2026
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Overview
CyrusOne is a data center real estate and infrastructure company that owns and operates carrier-neutral facilities for enterprise, cloud, telecommunications, and other institutional customers. Its core services include colocation, interconnection, peering, and associated data center infrastructure. Carrier neutrality allows customers to connect with multiple telecommunications carriers and network providers rather than being tied to a single network operator. The company was formed in July 2000 by David Ferdman and Larry Bursten, who had previously been associated with companies acquired by IXC Communications. CyrusOne initially developed as a data center platform and subsequently passed through several ownership stages. ABRY Partners acquired the company in 2007, and Cincinnati Bell purchased it in 2010 for $525 million. Under Cincinnati Bell, CyrusOne expanded its facilities and customer base, including the development of a major Texas data center in Carrollton and the purchase of land for additional campuses in Arizona and Northern Virginia. CyrusOne became a publicly traded company through an initial public offering in January 2013. Cincinnati Bell gradually reduced its ownership and had sold almost its entire stake by 2015. The company then pursued an acquisition-led expansion strategy. In July 2015, it acquired Cervalis for approximately $400 million, adding data center and business-continuity capabilities. In 2016, it bought a CME Group data center in Aurora, Illinois, in a leaseback transaction and later began construction of a large facility on the property. In 2017, CyrusOne entered or expanded its European presence through the approximately $442 million acquisition of Zenium Data Centers, whose assets included facilities in London and Frankfurt. The company’s business model combines ownership of specialized real estate with the operation of technically complex data center environments. Its facilities are designed to provide resilient power, cooling, physical security, network connectivity, and space for customers’ computing equipment. Customers may use CyrusOne’s facilities for colocation, cloud connectivity, disaster recovery, enterprise IT infrastructure, and network interconnection. The company’s geographic strategy has included major North American data center markets as well as selected European locations. CyrusOne faced a significant cybersecurity incident in December 2019 when a REvil ransomware attack affected six customers. The incident highlighted the operational and reputational risks associated with hosting critical digital infrastructure, although the available reference material does not provide a complete account of the company’s financial impact or long-term remediation program. Leadership changed several times around the company’s later corporate transition. Tesh Durvasula was appointed president and chief executive officer in February 2020. Co-founder and former chief executive David Ferdman returned as interim president and chief executive officer in July 2021. In March 2022, CyrusOne sold its Houston assets for $670 million and was acquired by Kohlberg Kravis Roberts and Global Infrastructure Partners in a transaction valued at $15 billion. Following that acquisition, CyrusOne ceased to be a publicly traded company and became privately owned by funds managed by the two investment firms. The company continues to operate as a data center platform, but its post-acquisition corporate structure and current executive roster are not fully specified in the supplied reference material.
History
CyrusOne was formed in July 2000 by David Ferdman and Larry Bursten. The founders had met through companies they established that were acquired by IXC Communications. CyrusOne developed as a specialized data center business, focusing on facilities that could host customers’ information technology equipment and connect them to multiple telecommunications and network providers. In July 2007, ABRY Partners acquired the company. Cincinnati Bell purchased CyrusOne in June 2010 for $525 million. The acquisition placed CyrusOne within a communications-oriented corporate group while allowing it to continue expanding its data center footprint. In September 2011, CyrusOne acquired 55.9 acres in Chandler, Arizona, for development of a data center facility. In 2012, it opened what was described in the reference material as the largest data center in Texas, located in Carrollton. CyrusOne entered the public markets through an initial public offering in January 2013. Cincinnati Bell progressively reduced its stake, selling almost all of its interest by 2015. That period marked a shift toward CyrusOne operating as an independently capitalized data center real estate platform. The company expanded through both new construction and acquisitions. In July 2015, it acquired Cervalis for approximately $400 million. The transaction added facilities and capabilities associated with data center operations, business continuity, and disaster recovery. In March 2016, CyrusOne acquired a CME Group data center in Aurora, Illinois, through a leaseback transaction. The company broke ground in December 2016 on a 425,000-square-foot data center on the property. It also purchased a 40-acre parcel in Loudoun County, Virginia, in June 2016, supporting development in one of the most important data center regions in the United States. The company broadened its international presence in August 2017 by acquiring Zenium Data Centers for approximately $442 million. Zenium operated data centers in London and Frankfurt, giving CyrusOne a larger European platform and access to established connectivity markets. CyrusOne’s broader portfolio included carrier-neutral facilities in North America, Europe, and Asia, with services centered on colocation, peering, interconnection, and enterprise infrastructure. In December 2019, a REvil ransomware attack affected six CyrusOne customers. The incident demonstrated the exposure of data center operators to cyberattacks that can disrupt customers even when the operator’s principal role is infrastructure hosting. The supplied reference does not establish the full extent of operational losses, litigation, regulatory consequences, or remediation costs. Tesh Durvasula became president and chief executive officer in February 2020. In July 2021, co-founder and former chief executive David Ferdman returned as interim president and chief executive officer. In March 2022, CyrusOne sold its Houston assets for $670 million. During the same month, funds managed by Kohlberg Kravis Roberts and Global Infrastructure Partners acquired the company in a $15 billion transaction. The acquisition removed CyrusOne from the public markets and made it a privately owned data center infrastructure business. The supplied sources do not identify a current chief executive or provide a complete post-acquisition operating history.
- 2022
Taken private by KKR and GIP
[1]Funds managed by Kohlberg Kravis Roberts and Global Infrastructure Partners acquired CyrusOne for $15 billion.
- 2017
Zenium Data Centers acquired
[1]CyrusOne acquired Zenium Data Centers for approximately $442 million, expanding its European footprint.
- 2015
Cervalis acquired
[1]CyrusOne acquired Cervalis for approximately $400 million.
- 2013
Initial public offering
[1]CyrusOne became a publicly traded company through an IPO in January.
- 2012
Carrollton data center opened
[1]The company opened a major data center in Carrollton, Texas.
- 2011
Chandler development land acquired
[1]CyrusOne acquired 55.9 acres in Chandler, Arizona, for data center construction.
- 2010
Acquired by Cincinnati Bell
[1]Cincinnati Bell acquired CyrusOne for $525 million in June.
- 2007
Acquired by ABRY Partners
[1]ABRY Partners acquired CyrusOne in July.
- 2000
Company formed
[1]David Ferdman and Larry Bursten formed CyrusOne in July.
Products and positioning
Enterprise-grade, carrier-neutral data center infrastructure for corporate, cloud, telecommunications, and institutional customers.
Data center services
Carrier-neutral colocation
CyrusOne provides space, power, cooling, security, and operating infrastructure for customers that install computing and networking equipment in its data centers. Its carrier-neutral model permits customers to connect with multiple network and telecommunications providers, supporting flexibility and resilience.
Connectivity services
Interconnection and peering
The company’s facilities support interconnection between customers, carriers, cloud platforms, and other network participants. Peering and cross-connect capabilities help organizations exchange traffic and build private connectivity relationships within or between data center environments.
Data center infrastructure
Enterprise data center infrastructure
CyrusOne develops and operates large-scale data center campuses for enterprise and institutional workloads. Facilities are designed around dependable power, cooling, physical security, connectivity, and operational continuity, enabling customers to outsource or supplement portions of their IT infrastructure.
Resilience services · 2015
Business continuity and disaster recovery facilities
Through its platform and the acquisition of Cervalis, CyrusOne expanded its ability to support business continuity and disaster recovery requirements. These environments are intended to help customers maintain or restore critical technology operations during outages or other disruptive events.
Controversies
2019
REvil ransomware incident
A ransomware attack attributed to the REvil group affected six CyrusOne customers in December 2019. The event raised concerns about the security and continuity of hosted customer environments. The supplied reference does not provide sufficient detail to quantify the company’s financial impact or describe the complete legal and regulatory aftermath.
2019
CyrusOne confirms ransomware attack affecting six customers
CyrusOne confirmed that it suffered a ransomware attack affecting six managed services customers, primarily served by its New York Data Center. The article does not report data theft or a data breach.
2019
CyrusOne reports ransomware attack affecting customers
CyrusOne confirmed a ransomware attack affecting devices on its network. Six managed-service customers, primarily at its New York data center, experienced availability issues. The attackers claimed to possess a private key to access stolen information; the source does not establish whether information was actually stolen.
Brand decisions
2022
Take-private transactionM&ABackground
CyrusOne’s owners pursued a major change in corporate ownership and public-market status.
Action taken
Funds managed by Kohlberg Kravis Roberts and Global Infrastructure Partners acquired the company in March and took it private.
Aftermath
CyrusOne became privately owned and its former public-company ticker was no longer applicable.
Transaction value. $15 billion (March 2022)
2017
European expansion through Zenium acquisitionM&ABackground
CyrusOne sought to increase its international data center presence and enter additional established connectivity markets.
Action taken
The company acquired Zenium Data Centers, including facilities in London and Frankfurt, for approximately $442 million.
Aftermath
The acquisition broadened CyrusOne’s European platform and operating footprint.
Acquisition value. $442 million (2017)
2013
Public-market expansion strategyStrategyBackground
After years of ownership by private-equity and telecommunications investors, CyrusOne pursued independent public-market access.
Action taken
The company completed an initial public offering in January 2013.
Aftermath
CyrusOne operated as a public data center real estate platform, while Cincinnati Bell gradually reduced its ownership.
Recent events
Reported
CyrusOne names Tesh Durvasula interim CEO[4]
CyrusOne announced that Tesh Durvasula will serve as CEO on an interim basis and stand as a candidate for the long-term post.
Reported
CyrusOne CEO Gary Wojtaszek steps down[4]
CyrusOne announced that President and CEO Gary Wojtaszek is stepping down from his roles by mutual agreement with the Board; he will provide transition assistance.
Reported
KKR and Global Infrastructure Partners announce CyrusOne acquisition deal[5]
KKR and Global Infrastructure Partners announced a deal to acquire CyrusOne, valuing the transaction at $15 billion. The deal had CyrusOne board approval and remained subject to regulatory approval; it was expected to close in the second quarter of the following year.
- Unconfirmed
Reported
CyrusOne CEO resigns and interim successor steps in[6]
CyrusOne CEO and president Gary Wojtaszek resigned. Tesh Durvasula will serve as interim CEO while the board considers him and external candidates for the permanent role.
Reported
CyrusOne confirms ransomware attack affecting six customers[2]
CyrusOne confirmed that it suffered a ransomware attack affecting six managed services customers, primarily served by its New York Data Center. The article does not report data theft or a data breach.
Reported
CyrusOne reports ransomware attack affecting customers[3]
CyrusOne confirmed a ransomware attack affecting devices on its network. Six managed-service customers, primarily at its New York data center, experienced availability issues. The attackers claimed to possess a private key to access stolen information; the source does not establish whether information was actually stolen.
Reported
CyrusOne confirms ransomware attack affecting six customers[7]
CyrusOne confirmed a ransomware attack affecting its managed services division and six customers served primarily from its New York data center. The company said it initiated response and continuity protocols, was working to restore availability, and was investigating the incident with third-party experts.
Sources8 sources
- 1CyrusOneen.wikipedia.org
- 2CyrusOne confirms ransomware attack affecting six customersmsspalert.com
- 3CyrusOne reports ransomware attack affecting customersinfosecurity-magazine.com
- 4CyrusOne任命Tesh Durvasula为临时首席执行官datacenterdynamics.com
- 5KKR与Global Infrastructure Partners宣布收购CyrusOnetechcrunch.com
- 6CyrusOne首席执行官辞职并由临时继任者接任datacenterknowledge.com
- 7CyrusOne确认勒索软件攻击影响六名客户datacenterknowledge.com
- 8CyrusOne Appoints CEO From Outside the Data Center Industrydatacenterknowledge.com
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