CyrusOne
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CyrusOne is a wholesale and enterprise colocation provider — it leases rack, cage, suite, and dedicated building space to hyperscale cloud companies and large enterprises who install their own hardware inside CyrusOne-owned facilities. As of 2025 the company states it operates more than 60 data centers across North America, EMEA, and APAC, with its historical core in Texas (Dallas/Austin/San Antonio), the Chicago area, and Northern Virginia, plus a growing European footprint in Frankfurt, London, Amsterdam, Dublin, Madrid, and Milan, and a newer Asia-Pacific push into Osaka, Japan and Singapore. CyrusOne was taken private in March 2022 by funds managed by KKR and Global Infrastructure Partners in a deal valued at roughly $15 billion including debt, and in January 2025 it secured $9.7 billion in debt financing earmarked for AI-driven expansion. Its notable differentiator is Intelliscale, a purpose-built AI/high-density data center design launched in 2023 supporting up to 300kW per rack via liquid-to-chip, rear-door heat exchanger, and immersion cooling.
CyrusOne has a confirmed data center presence at the following locations:
FACILITY OPERATOR
CyrusOne Data Center Locations
- Hanau, Hesse, Germany FRA5 Frankfurt Data CenterAI DATA CENTER CARRIER-NEUTRAL PENDING REVIEW
FRA5 achieved a Power Usage Effectiveness of 1.18 on its 54MW campus, cited by industry coverage as an efficiency benchmark for the company's European buildout. - Dublin, Ireland DUB1 Dublin Data Center CARRIER-NEUTRAL PENDING REVIEW
Dublin is highlighted by industry commentary as a major European cloud connectivity hub, reinforcing CyrusOne's interconnection value proposition there. - Milan, Italy MIL1/MIL2 Milan Data Center CARRIER-NEUTRAL PENDING REVIEW
MIL2 was announced in 2025 as a 54MW, three-floor, 18,000-square-meter facility, doubling CyrusOne's presence in the Milan market it entered with MIL1. - Osaka, Japan KEP OSK1 Osaka Data Center PENDING REVIEW
OSK1, developed via a joint venture with Kansai Electric Power Company (KEPCO), is CyrusOne's first data center in Asia and is planned to deliver 48MW of capacity on a roughly 19,693-square-meter site. - Amsterdam, Netherlands AMS1 Amsterdam Data Center CARRIER-NEUTRAL PENDING REVIEW
AMS1 sits on SADC's PolanenPark campus about 15 kilometers west of central Amsterdam and spans two buildings totaling roughly 320,000 square feet of technical space. - Singapore, Singapore Singapore Data Center PENDING REVIEW
Singapore is described by industry sources as a gateway to Southeast Asia for CyrusOne, valued for its political stability and connectivity. - Madrid, Spain MAD1 Madrid Data Center CARRIER-NEUTRAL PENDING REVIEW
- London, UK LON1-LON6 London/Slough Data Centers CARRIER-NEUTRAL PENDING REVIEW
CyrusOne London I, in Slough, delivers 9MW of IT power to 4,300 sq m of technical space in one of the UK's premier data center clusters, while London III, built in 2021, is a purpose-built facility offering over 39,000 sq ft of technical space. - Chandler, Arizona, USA PHX1-PHX8 Phoenix Data Center CARRIER-NEUTRAL PENDING REVIEW
This Chandler campus has grown into an eight-building complex (PHX1-PHX8), reflecting one of CyrusOne's largest single-site expansions in the US. - Norwalk, Connecticut, USA NYM5 Norwalk Data Center CARRIER-NEUTRAL PENDING REVIEW
- Aurora, Illinois, USA CHI1-CHI3 Chicago Aurora Data Center CARRIER-NEUTRAL PENDING REVIEW
CyrusOne's Chicago-area presence centers on a multi-building Aurora campus that has expanded through several construction phases (CHI1-CHI3). - Lombard, Illinois, USA CHI5 Lombard Data Center CARRIER-NEUTRAL PENDING REVIEW
- South Bend, Indiana, USA South Bend Data Center TIER II CARRIER-NEUTRAL PENDING REVIEW
This Tier 2 South Bend facility is positioned by industry sources as strategically located outside major flight paths for added resiliency. - Council Bluffs, Iowa, USA OCB1 Council Bluffs Data Center CARRIER-NEUTRAL PENDING REVIEW
- Florence, Kentucky, USA CIN6 Florence Data Center CARRIER-NEUTRAL PENDING REVIEW
This site is located near Greater Cincinnati and Northern Kentucky International Airport, a location the company has cited for its logistics advantages. - Somerset, New Jersey, USA NYM1 Somerset Data Center CARRIER-NEUTRAL PENDING REVIEW
- Totowa, New Jersey, USA NYM2 Totowa Data Center TIER III CARRIER-NEUTRAL PENDING REVIEW
The Totowa facility is described as a purpose-built site meeting Tier 3 standards for high-availability mission-critical deployments. - Wappingers Falls, New York, USA NYM7 Wappingers Falls Data Center CARRIER-NEUTRAL PENDING REVIEW
- Durham, North Carolina, USA DUR1 Raleigh-Durham Data Center TIER III CARRIER-NEUTRAL PENDING REVIEW
This Durham-area facility is marketed as a premier Tier 3 data center serving the Raleigh-Durham enterprise market. - Cincinnati, Ohio, USA CIN2 Cincinnati Data Center CARRIER-NEUTRAL PENDING REVIEW
- Lebanon, Ohio, USA CIN5 Lebanon Data Center CARRIER-NEUTRAL PENDING REVIEW
The Lebanon site sits on a 123-acre campus roughly 30 minutes northeast of downtown Cincinnati, giving CyrusOne room for significant future expansion. - Allen, Texas, USA DFW3-DFW5 Allen Data Center CARRIER-NEUTRAL PENDING REVIEW
The CyrusOne Allen Data Center is described by independent facility trackers as a top-tier facility exemplifying the company's Texas colocation offering. - Austin, Texas, USA AUS2-AUS3 Austin Data Center CARRIER-NEUTRAL PENDING REVIEW
- Carrollton, Texas, USA DFW1 Dallas Carrollton Data Center CARRIER-NEUTRAL PENDING REVIEW
- Lewisville, Texas, USA DFW2 Data Center CARRIER-NEUTRAL PENDING REVIEW
- San Antonio, Texas, USA San Antonio Data Center CARRIER-NEUTRAL PENDING REVIEW
San Antonio was the site of CyrusOne's first data center launch, in 2012, an early milestone in the company's Texas growth. - Ashburn, Virginia, USA NVA9 Ashburn Data CenterAI DATA CENTER CARRIER-NEUTRAL PENDING REVIEW
CyrusOne's NVA9 campus in Loudoun County is a roughly 700,000-square-foot data center development in the Ashburn area, one of the world's densest data center markets. - Quincy, Washington, USA Quincy Data Center CARRIER-NEUTRAL PENDING REVIEW
The Quincy facility serves as one of CyrusOne's Pacific Northwest colocation sites, an area known for cheap hydroelectric power favorable to large data centers.
By Continent
AI Data Centers
CyrusOne's AI-specific product is called Intelliscale, launched in August 2023 as a purpose-built design for GPU/TPU-heavy workloads that can support up to 300kW per rack using a mix of liquid-to-chip cooling, rear-door heat exchangers, and immersion cooling. The company has framed this as a response to the thermal demands of next-generation AI hardware, and says Intelliscale facilities can be far more space-efficient than traditional designs. Separately, CyrusOne has highlighted a 54MW Frankfurt campus achieving a PUE of 1.18 using closed-loop, largely water-free cooling, illustrating the efficiency push behind its AI and high-density buildout.
- Ashburn, USA NVA9 Ashburn Data Center AI DATA CENTER CARRIER-NEUTRALPENDING REVIEW
CyrusOne's NVA9 campus in Loudoun County is a roughly 700,000-square-foot data center development in the Ashburn area, one of the world's densest data center markets. - Hanau, Germany FRA5 Frankfurt Data Center AI DATA CENTER CARRIER-NEUTRALPENDING REVIEW
FRA5 achieved a Power Usage Effectiveness of 1.18 on its 54MW campus, cited by industry coverage as an efficiency benchmark for the company's European buildout.
Common Questions
Does CyrusOne have AI/GPU-specific data center infrastructure?
Yes. CyrusOne's Intelliscale platform, launched in August 2023, is a purpose-built AI-workload data center design supporting GPU and TPU deployments at densities up to 300kW per rack using liquid-to-chip, rear-door heat exchanger, and immersion cooling techniques, and the company says Intelliscale facilities can occupy as little as 25% of the footprint of a traditional data center for equivalent capacity.
Who owns CyrusOne?
CyrusOne is privately owned by funds managed by KKR and Global Infrastructure Partners, which took the company private in March 2022 in a transaction valued at approximately $15 billion including debt.
How many data centers does CyrusOne operate, and where?
As of 2025, CyrusOne's own site states it operates more than 60 data centers across North America, EMEA, and APAC, with concentrations in Texas, Illinois, Virginia, and the New York/New Jersey/Connecticut area in the US, plus Frankfurt, London, Amsterdam, Dublin, Madrid, and Milan in Europe, and Osaka, Japan (via a joint venture) and Singapore in Asia.
Has CyrusOne expanded into Asia recently?
Yes — in 2023 CyrusOne entered the Japanese market through a joint venture with Kansai Electric Power Company (KEPCO), with its first Japanese facility, OSK1 near Osaka, planned to deliver 48MW of capacity, marking the company's first data center in Asia alongside its existing Singapore presence.
Does CyrusOne offer colocation services?
Yes — we've identified 28 facilities where CyrusOne may offer colocation services. Please contact CyrusOne directly to confirm current availability and terms.
Does CyrusOne offer cloud services?
We haven't confirmed cloud services for CyrusOne yet — this isn't a definitive no, since our research can miss things. Please contact CyrusOne directly to confirm cloud availability.
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