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CoreSite

OperatorOwnerTop 23 global operator

CoreSite provides digital infrastructure for businesses, offering scalable space, reliable power, and high-performance interconnection across key U.S. markets. They facilitate direct access to cloud and network ecosystems, providing a secure foundation for enterprises to grow and innovate. They operate and own network-dense, cloud-enabled data centres. CoreSite supplies colocation services including cabinets, private cages, and suites, alongside interconnection solutions like their Open Cloud Exchange, cross connects, and blended IP. They also offer cloud networking options for major providers such as AWS, Azure, and Google Cloud.

At a glance

Facilities tracked

34

Markets

11

Countries

1

Live capacity

400+ MW

Pipeline

5+ MW

Total potential

450+ MW

3% of live capacity is estimated rather than sourced.

Live capacity is power in service today. Pipeline is under construction plus announced. Total potential counts every megawatt once, including expansion headroom at existing sites.


Santa Clara, CO, USFounded 2001400 employees

CoreSite data centre locations

35 mapped sites across 1 country, coloured by status.

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About CoreSite

As a non carrier neutral operator, CoreSite operates in a competitive environment dominated by carriers and independent operators competing for similar enterprise and wholesale customer segments. The company's silicon valley dominance positions it well within the internet and technology services sectors, though it lacks the geographic reach and scale of larger rivals. CoreSite's private equity backing suggests active portfolio management and potential for operational optimization or strategic repositioning. The operator's mid-market scale and focused geographic approach distinguish it from hyperscale competitors while serving the specific connectivity needs of companies operating across multiple premium markets rather than pursuing truly global footprint strategies.

3 paragraphs are not shown here because they assert facility or capacity figures we could not reconcile with the measured figures above.

Company Overview

Founded Location

Denver, Colorado, USA

Ownership Type

Pe Backed

Parent Company

American Tower

CoreSite facilities

Every CoreSite site with a page on DC Atlas, by market.

Los AngelesUnited States

Silicon ValleyUnited States

DenverUnited States

ChicagoUnited States

MiamiUnited States

Northern VirginiaUnited States

BostonUnited States

New YorkUnited States

AtlantaUnited States

New JerseyUnited States

OrlandoUnited States

Washington D.C.United States

Browse every operator in United States

Recent Activity

  • Permit filedSep 15, 2026

    Digital Realty, Colovore, Hut 8, CoreSite, DataBank file permits for five Texas data centers

    Lone Star State continues to appeal to operators

  • ExpansionJul 14, 2026

    Harbor Link Expands Underground Fiber Network into CoreSite Washington, D.C. Campus

    Harbor Link is extending its underground fiber network infrastructure into CoreSite's Washington, D.C. data center campus. The deployment enhances carrier diversity and adds redundant network paths across multiple facilities in the region. This expansion strengthens connectivity options for enterprises, carriers, cloud providers, and network operators in the Washington, D.C. market. The project improves overall network resiliency and reliability for data center customers.

  • AcquisitionDec 28, 2021$10.4B

    American Tower completes $10.4B CoreSite data center acquisition

    American Tower Corporation completed its acquisition of CoreSite on December 28, 2021, adding over 20 data center facilities across eight U.S. markets to its portfolio. The all-in transaction value was $10.4 billion, including assumption and repayment of CoreSite's debt. This acquisition significantly expanded American Tower's interconnected U.S. data center footprint serving enterprises, cloud providers, and network operators. The company also announced a parallel $2.5 billion minority equity investment in its U.S. data center business by a third party.

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