Data Center Companies: The Top 15, Ranked
Who actually owns the AI build-out? These are the 15 biggest operators by mapped facilities on our 1,757-site US & Canada map — hyperscalers that build for themselves, and colocation providers that rent to everyone else. Click any company for its full map and facility list.
The ranking
| Company | Facilities mapped | Type | Biggest state |
|---|---|---|---|
| Amazon (AWS) | 243 | Hyperscaler | Virginia |
| Digital Realty | 78 | Colocation / wholesale REIT | Virginia |
| 73 | Hyperscaler | Iowa | |
| Microsoft | 60 | Hyperscaler | Iowa |
| Meta | 60 | Hyperscaler (self-use) | Oregon |
| Equinix | 55 | Colocation / interconnection REIT | Virginia |
| QTS | 54 | Colocation / hyperscale | Virginia |
| Flexential | 43 | Colocation | Oregon |
| NTT | 27 | Colocation / wholesale | Virginia |
| CyrusOne | 23 | Wholesale / hyperscale | Virginia |
| Vantage | 21 | Hyperscale developer | Texas |
| CoreSite | 20 | Colocation | California |
| Lumen | 19 | Network operator | Texas |
| CenterSquare | 17 | Colocation | Virginia |
| Switch | 16 | Colocation (large campus) | Nevada |
Counts are real mapped facilities from our dataset (OpenStreetMap, ODbL) — official totals may be higher. Updated August 1, 2026.
Hyperscaler or colocation — what's the difference?
Hyperscalers (Amazon, Google, Microsoft, Meta) build data centers to run their own clouds and platforms — you use their services, not their buildings. Colocation and wholesale providers (Equinix, Digital Realty, QTS, and the rest) rent space, power and cooling to anyone — from a single rack to an entire hall. The AI boom is filling both: hyperscalers build training campuses, and colocation providers lease overflow capacity to the same clouds.
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Frequently asked questions
What is the largest data center company?
By mapped facilities on our map, Amazon (AWS) leads with 243 — more than the next two operators combined. Among companies that rent space to others, Digital Realty (78 mapped) and Equinix (55 mapped) are the giants.
Which data center companies are building for AI?
All of them. The hyperscalers (AWS, Microsoft, Google, Meta) are building dedicated AI training campuses, while wholesale developers like Vantage, QTS and CyrusOne lease entire buildings to those same clouds for AI capacity.
Which data center companies can I buy space from?
The colocation and wholesale providers: Equinix, Digital Realty, QTS, Flexential, NTT, CyrusOne, CoreSite, Lumen, CenterSquare, Switch and Vantage. The hyperscalers don't rent physical space — you buy their cloud services instead.