CyrusOne
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CyrusOne is a Dallas-based data center developer and operator that sells wholesale and enterprise colocation space to hyperscale cloud providers, large enterprises, and content and telecommunications companies across North America, Europe, and Asia-Pacific. As of 2026 the company states it operates more than 60 data centers, built around a modular, multi-building campus approach it markets as ‘Massively Modular,’ with major campuses in Texas, Northern Virginia, Illinois, Ohio, and a growing European footprint anchored in Frankfurt and London. Taken private in a roughly $15 billion buyout by KKR and Global Infrastructure Partners completed in March 2022 after a decade as a public REIT, CyrusOne has since pursued aggressive power-driven expansion for AI and hyperscale workloads, including a large powered-land partnership with Calpine in Bosque County, Texas, and an onsite gas-generation deal with E.ON in Frankfurt.
CyrusOne has a confirmed data center presence at the following locations:
FACILITY OPERATOR
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CyrusOne Data Center Locations
- Paris, France PAR1 PENDING REVIEW
- Frankfurt, Hesse, Germany FRA1 PENDING REVIEW
- Frankfurt, Hesse, Germany FRA2 PENDING REVIEW
- Frankfurt, Hesse, Germany FRA3 PENDING REVIEW
- Frankfurt, Hesse, Germany FRA4 PENDING REVIEW
CyrusOne has acquired a second site adjacent to FRA4, doubling down on Frankfurt as a strategic connectivity market. - Frankfurt, Hesse, Germany FRA5 PENDING REVIEW
- Frankfurt, Hesse, Germany FRA6 PENDING REVIEW
FRA6 is designed to deliver 72MW of IT capacity across four floors, each providing 18MW. - Frankfurt, Hesse, Germany FRA7 PENDING REVIEW
FRA7 is expanding its IT capacity from 81MW to 126MW through a partnership with E.ON for a 61MW onsite, hydrogen-capable gas engine generation facility expected online in 2029. - Dublin, Ireland DUB1 PENDING REVIEW
DUB1 was CyrusOne's first data center campus in Ireland, breaking ground in 2019 and opening to customers in Q4 2020, ultimately planned to deliver 360,000 sq ft across three two-story buildings. - Milan, Italy MIL1 PENDING REVIEW
MIL1 was CyrusOne's first data center in Italy, a three-story facility delivering 27MW of IT capacity across roughly 75,000 sq ft. - Milan, Italy MIL2 PENDING REVIEW
MIL2 is CyrusOne's second Milan data center, planned to deliver 54MW of IT capacity across 18,000 square meters via a three-story building with six 9MW data halls. - Osaka, Japan OSK1 PENDING REVIEW
- Amsterdam, Netherlands AMS1 PENDING REVIEW
AMS1 offers 320,000 sq ft of technical space across two separate buildings on SADC's PolanenPark campus, about 15 kilometers west of central Amsterdam. - Madrid, Spain MAD1 PENDING REVIEW
MAD1, finished in 2023 in the municipality of Alcobendas, delivers 6,000 sq m (about 64,584 sq ft) of technical space in a two-story building. - Iver Heath, UK LON5 PENDING REVIEW
This sixth greater London area campus expands CyrusOne's presence into Iver Heath, Buckinghamshire. - London, UK LON2 PENDING REVIEW
London II was originally built by Infinity SDC before becoming part of CyrusOne's portfolio. - London, UK LON3 PENDING REVIEW
- London, UK LON4 PENDING REVIEW
- London, UK LON6 PENDING REVIEW
- Slough, UK LON1 PENDING REVIEW
London I is located in Slough, one of the UK's premier data center locations, delivering 9MW of IT power across 4,300 sq m of technical space. - Chandler, Arizona, USA PHX1-PHX8 PENDING REVIEW
Per CyrusOne's own site: CyrusOne states this Chandler campus delivers infrastructure across eight state-of-the-art buildings with biometric access and 36-inch raised flooring. - Norwalk, Connecticut, USA NYM5 PENDING REVIEW
- Aurora, Illinois, USA CHI1-CHI3 PENDING REVIEW
- Lombard, Illinois, USA CHI5 PENDING REVIEW
- Council Bluffs, Iowa, USA OCB1 PENDING REVIEW
- Florence, Kentucky, USA CIN6 PENDING REVIEW
This facility is located about 15 minutes from Greater Cincinnati and the Northern Kentucky International Airport. - Lebanon, New Hampshire, USA CIN5 PENDING REVIEW
This Lebanon data center sits on a 123-acre site about 30 minutes northeast of downtown Cincinnati. - Somerset, New Jersey, USA NYM1 PENDING REVIEW
- Totowa, New Jersey, USA NYM2 TIER III PENDING REVIEW
This Totowa facility is described as a purpose-built Tier 3 site supporting mission-critical enterprise deployments. - Wappingers Falls, New York, USA NYM7 PENDING REVIEW
- Durham, North Carolina, USA DUR1 PENDING REVIEW
- Cincinnati, Ohio, USA CIN2 PENDING REVIEW
- Austin, Texas, USA AUS2-AUS3 PENDING REVIEW
- Houston, Texas, USA HOU3-HOU4 PENDING REVIEW
This dual-facility Houston campus provides 347,000 sq ft of technical space and 91MW of power capacity, with HOU3 and HOU4 holding separate Green Globe sustainability ratings. - San Antonio, Texas, USA SAT1 PENDING REVIEW
SAT1 was the first enterprise colocation facility built in San Antonio, launched in 2012. - San Antonio, Texas, USA SAT2-SAT4 PENDING REVIEW
- San Antonio, Texas, USA SAT5-SAT6 PENDING REVIEW
This fifth San Antonio campus comprises two buildings totaling 276,000 square feet of space. - Whitney, Texas, USA DFW10 PENDING REVIEW
DFW10 is a $750 million, 250,000 sq ft hyperscale campus built through a first-of-its-kind powered-land partnership with Calpine, drawing a dedicated 400MW supply from the adjacent Thad Hill Energy Center. - Allen, Texas, USA DFW3-DFW5 PENDING REVIEW
The Allen data center is described as a top-tier facility exemplifying excellence in colocation service delivery. - Carrollton, Texas, USA DFW1 PENDING REVIEW
- Lewisville, Texas, USA DFW2 PENDING REVIEW
- Sterling, Virginia, USA NVA1-NVA3 PENDING REVIEW
- Sterling, Virginia, USA NVA4 PENDING REVIEW
- Sterling, Virginia, USA NVA5-NVA7 PENDING REVIEW
- Sterling, Virginia, USA NVA8 PENDING REVIEW
- Sterling, Virginia, USA NVA9 PENDING REVIEW
NVA9 is a 700,000 square foot data center campus located at 43290 Old Ox Road in Loudoun County's Ashburn data center corridor. - Quincy, Washington, USA PNW1 PENDING REVIEW
This Quincy campus sits on a 45-acre plot CyrusOne acquired in 2016, with construction beginning in early 2023 to serve Pacific Northwest demand.
By Continent
Common Questions
Does CyrusOne have AI/GPU-specific data center infrastructure?
CyrusOne markets an 'Intelliscale' platform for AI and high-density workloads featuring liquid-to-chip cooling, rear-door heat exchangers, and immersion cooling, and its clearest single-site example is the DFW10 campus in Bosque County (Whitney), Texas, a hyperscale facility described as engineered specifically for AI-driven workloads and built with planned liquid cooling infrastructure alongside a dedicated 400MW power supply from Calpine's adjacent Thad Hill Energy Center.
Is CyrusOne a public company?
No. CyrusOne was a publicly traded data center REIT (NASDAQ: CONE) from its 2013 IPO until March 2022, when it was taken private in an approximately $15 billion acquisition by funds managed by KKR and Global Infrastructure Partners.
Does CyrusOne still operate data centers in Houston?
CyrusOne sold its original four Houston data center assets (Houston West I, II, III and the Houston Galleria facility) to DataBank for $670 million in a deal that closed in March 2022; CyrusOne's own website now lists a separate HOU3-HOU4 campus in Houston, so its current Houston footprint is distinct from the divested assets.
How many countries does CyrusOne operate in?
Based on its own current data center listing, CyrusOne operates physical facilities in the United States, France, Germany, Ireland, Italy, the Netherlands, Spain, the United Kingdom, and Japan.
Does CyrusOne offer colocation services?
Yes — we've identified 47 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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