Sign in

Private company

CoreSite

Logo: coresite.com4

American data center provider

CoreSite, a subsidiary of American Tower, owns carrier-neutral data centers and provides colocation and peering services. As of June 24, 2022 the company owned 27 operating data center facilities in 10 markets comprising over 4.6 million net rentable square feet. The properties are in Boston, Chicago, Denver, Los Angeles, Miami, New York City, Northern Virginia, San Francisco/San Jose, California, Santa Clara, California, Atlanta, Georgia, Orlando, Florida, and the Washington, D.C. areas.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

2001Founded1
  • Industryreal estate investment trust1
  • HeadquartersDenver1
  • Websitewww.coresite.com
  • Listed onNew York Stock Exchange1
  • Legal formLimited Partnership3
  • Kind of organizationLimited partnership1
  • LEI549300PBIMJB4H4UCK563
  • StatusActive3
  • LEI statusLapsed (not renewed)3
  • Registered addressC/O THE CORPORATION TRUST COMPANY, 19801 Wilmington, United States3
  • Registered withDivision of Corporations, Department of State, 48196793

See how the biggest companies compare on our leaderboards

CoreSite, a subsidiary of American Tower, owns carrier-neutral data centers and provides colocation and peering services.2

Corporate structure

CoreSite sits at the top of its group. 5 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

  • CoreSite Denver, Colorado, United States
    • CoreSite Real Estate 2 Emerson Lane, L.L.C. Subsidiary · Denver, Colorado, United States
    • CORESITE REAL ESTATE 427 S. LASALLE, L.L.C. Subsidiary · Denver, Colorado, United States
    • CORESITE REAL ESTATE 55 S. MARKET STREET, L.L.C. Subsidiary · Denver, Colorado, United States
    • CORESITE REAL ESTATE CH2, L.L.C. Subsidiary · Denver, Colorado, United States

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0). Each entity in the chart links to its source.

The story

The company was founded in 2001 as CRG West at two of the West coast's original carrier hotels: Market Post Tower and One Wilshire.

In August 2005, the company opened a facility in Washington, D.C.

In June 2009, the company changed its name to CoreSite.

In September 2010, the company became a public company via an initial public offering.

In August 2012, Coresite became the first AMS-IX enabled data center operator in North America.

In July 2016, Tom Ray, the chief executive officer of the company, retired and was replaced by Paul Szurek, lead independent director.

In December 2021, the company was acquired by American Tower.

From Wikipedia’s article on CoreSite, shared under CC BY-SA 4.0.5

Products and brands

  • data center

Listed on Wikidata.1

Acquisitions

In May 2007, the company acquired properties in Boston and Chicago. It also purchased a tract of land in Santa Clara, with the intent of developing a 50-megawatt data center Coronado campus there.

In April 2012, the company acquired Comfluent and entered the Denver market.

In August 2016, the company announced the $60 million acquisition of the 22-acre Sunrise Technology Park from Brookfield Office Properties.

From Wikipedia’s article on CoreSite, shared under CC BY-SA 4.0.5

Timeline

  1. 2001Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1
  2. 2
  3. 3
  4. 4
    Company websiteCoreSite logo
  5. 5