Data center companies build, own and run the physical sites that keep applications online: the power, cooling, network and floor space behind almost everything a business touches. Buyers search for them for very different reasons. Some need somewhere to place hardware, some are picking a cloud region, and plenty are vendors trying to sell into the sector. The market splits into five practical groups. Hyperscale operators run enormous single-tenant campuses. Colocation providers rent space and power to many customers in one building. Enterprise data centers are owned and run by the company using them. Cloud providers sell capacity as a service rather than as floor space. Edge operators put smaller sites close to users to cut latency. The directory below covers well known names in each group, and BizzContacts supplies the verified companies and named decision makers behind them.
Equinix
Colocation- Headquarters:
- Redwood City, CA, USA
- Services:
- Colocation, interconnection, cloud on-ramps
Operates one of the largest interconnection footprints in the industry, with IBX sites in most major metros. Buyers usually pick Equinix when direct cross connects to partners and cloud providers matter more than raw floor space.
Digital Realty
Colocation- Headquarters:
- Austin, TX, USA
- Services:
- Wholesale and retail colocation, interconnection
A REIT that leases everything from single cabinets to multi-megawatt halls across a global portfolio. Often shortlisted by enterprises that want one landlord across several continents.
CyrusOne
Colocation- Headquarters:
- Dallas, TX, USA
- Services:
- Enterprise and hyperscale colocation
Focuses on large enterprise deployments and hyperscale build-to-suit work, with a heavy concentration in Texas and Northern Virginia. Known for fast delivery timelines on big footprints.
QTS Data Centers
Colocation- Headquarters:
- Overland Park, KS, USA
- Services:
- Hyperscale, colocation, federal-grade sites
Runs mega scale campuses alongside conventional colocation, with a strong public sector and regulated industry practice. Its site selection leans toward cheap power and room to expand.
CoreSite
Colocation- Headquarters:
- Denver, CO, USA
- Services:
- Interconnection-dense colocation, cloud access
An American Tower company concentrated in eight major US markets rather than spread thin globally. Popular with network and content businesses that need dense peering in a handful of cities.
Iron Mountain Data Centers
Colocation- Headquarters:
- Boston, MA, USA
- Services:
- Secure colocation, compliance-focused hosting
Extends a long records management heritage into physical IT infrastructure, with an emphasis on chain of custody and audit readiness. Frequently chosen by regulated buyers with strict evidence requirements.
Flexential
Colocation- Headquarters:
- Charlotte, NC, USA
- Services:
- Colocation, hybrid IT, managed cloud connectivity
Serves mid-market and enterprise customers across dozens of US sites, pairing floor space with managed services. Useful to teams that want colocation without hiring a full infrastructure staff.
NTT Global Data Centers
Hyperscale- Headquarters:
- Tokyo, Japan
- Services:
- Hyperscale campuses, colocation, global network
Combines large campus development with a carrier network spanning Asia, Europe and North America. Its scale makes it a common shortlist entry for multinationals standardising across regions.
Switch
Colocation- Headquarters:
- Las Vegas, NV, USA
- Services:
- High-density colocation, campus deployments
Built its reputation on very large, high specification campuses concentrated in a few US locations. Attracts customers who value density and uptime engineering over geographic spread.
STACK Infrastructure
Hyperscale- Headquarters:
- Denver, CO, USA
- Services:
- Build-to-suit, powered shell, wholesale capacity
Develops capacity for hyperscale and large enterprise tenants, often delivering powered shells that customers fit out themselves. Growth has followed the major cloud availability zones.
Vantage Data Centers
Hyperscale- Headquarters:
- Denver, CO, USA
- Services:
- Wholesale campuses, build-to-suit
Develops large multi-building campuses across North America, EMEA and Asia Pacific for cloud and enterprise tenants. Deals here tend to be measured in tens of megawatts.
EdgeConneX
Edge- Headquarters:
- Herndon, VA, USA
- Services:
- Edge data centers, regional capacity
Built a business on putting capacity in secondary markets rather than the traditional hubs. Content and network operators use it to shorten the distance between workloads and end users.
DataBank
Colocation- Headquarters:
- Dallas, TX, USA
- Services:
- Colocation, managed services, edge sites
Operates a broad US footprint weighted toward regional markets and metro edge locations. Often selected by companies that need presence in cities the global operators skip.
Aligned Data Centers
Hyperscale- Headquarters:
- Dallas, TX, USA
- Services:
- Build-to-scale capacity, efficient cooling
Markets heavily on cooling efficiency and the ability to add capacity in increments as tenants grow. Appeals to buyers whose demand curve is steep but hard to forecast.
Yondr Group
Hyperscale- Headquarters:
- London, UK
- Services:
- Build-to-suit hyperscale campuses
Develops and operates dedicated campuses for a small number of very large tenants. Its model is closer to construction and delivery partner than to landlord.
Compass Datacenters
Hyperscale- Headquarters:
- Dallas, TX, USA
- Services:
- Dedicated campuses, modular delivery
Delivers dedicated facilities built from a repeatable design, which shortens the path from signature to live capacity. Common choice for tenants standardising across multiple sites.
Scala Data Centers
Hyperscale- Headquarters:
- Sao Paulo, Brazil
- Services:
- Latin American campuses, sustainable power
The largest homegrown platform in Latin America, with sites concentrated in Brazil and neighbouring markets. Renewable power sourcing is central to its positioning.
GDS Holdings
Colocation- Headquarters:
- Shanghai, China
- Services:
- Carrier-neutral colocation, cloud connectivity
A leading carrier-neutral operator in China with expansion across Southeast Asia. Serves cloud platforms and large domestic internet companies.
China Telecom Data Centers
Carrier- Headquarters:
- Beijing, China
- Services:
- Carrier data centers, hosting, network services
Runs data center capacity as an extension of a national telecom network. Widely used where network ownership and domestic coverage matter more than neutrality.
Telehouse (KDDI)
Colocation- Headquarters:
- London, UK and Tokyo, Japan
- Services:
- Carrier-neutral colocation, internet exchange access
One of the older names in carrier-neutral colocation, with sites anchored around major internet exchanges. Its London Docklands campus remains a significant European peering point.
Global Switch
Colocation- Headquarters:
- London, UK
- Services:
- Large-scale carrier-neutral colocation
Operates a small number of very large facilities in European and Asia Pacific city centres. Suits tenants that want scale inside the metro rather than on the outskirts.
NEXTDC
Colocation- Headquarters:
- Brisbane, Australia
- Services:
- Australian colocation, cloud on-ramps
The main independent colocation platform in Australia, with sites in every mainland capital. Frequently the local anchor for companies entering the Australian market.
Colt Data Centre Services
Hyperscale- Headquarters:
- London, UK
- Services:
- Hyperscale and wholesale capacity in Europe and Asia
Develops large wholesale facilities across Europe and Asia Pacific, backed by a long-standing network business. Often involved where connectivity and capacity are bought together.
AirTrunk
Hyperscale- Headquarters:
- Sydney, Australia
- Services:
- Asia Pacific hyperscale campuses
Focuses exclusively on very large campuses across Australia, Japan, Singapore, Hong Kong and Malaysia. Built specifically around the requirements of cloud platforms.
Cologix
Colocation- Headquarters:
- Denver, CO, USA
- Services:
- Interconnection, network-dense colocation
Concentrates on interconnection hubs across North America, including several Canadian markets. Chosen by network operators that need dense local peering rather than raw square footage.
Amazon Web Services (AWS)
Hyperscale cloud- Headquarters:
- Seattle, WA, USA
- Services:
- Cloud regions, availability zones, managed infrastructure
Sells capacity as services rather than floor space, running its own global region and availability zone footprint. Its region launches often pull colocation and network demand into the same market.
Microsoft Azure
Hyperscale cloud- Headquarters:
- Redmond, WA, USA
- Services:
- Cloud regions, hybrid infrastructure
Operates one of the widest region footprints of any provider, with heavy enterprise and public sector adoption. Hybrid deployments frequently pair Azure with colocation space.
Google Cloud
Hyperscale cloud- Headquarters:
- Mountain View, CA, USA
- Services:
- Cloud regions, private network backbone
Runs a large privately owned network connecting its regions, which shapes how customers design multi-region workloads. Data and analytics workloads are a particular strength.
Oracle Cloud Infrastructure
Hyperscale cloud- Headquarters:
- Austin, TX, USA
- Services:
- Cloud regions, dedicated regions, database services
Differentiates on database workloads and on dedicated regions installed inside a customer's own facility. Common where an existing Oracle estate drives the cloud decision.
IBM Cloud
Hyperscale cloud- Headquarters:
- Armonk, NY, USA
- Services:
- Cloud regions, bare metal, regulated workloads
Serves regulated industries with a mix of cloud regions and bare metal capacity. Financial services buyers make up a meaningful share of its base.