Private company

Zayo Group

Logo: Zayo Group, Public domain, via Wikimedia Commons3

American communications company

Zayo Group Holdings, Inc. is an American telecommunications company headquartered in Denver, Colorado, with European headquarters in London.2 It was founded by Dan Caruso.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

2007Founded1
  • Industrytelecommunications company1
  • HeadquartersDenver1
  • Websitezayo.com

Zayo Group Holdings, Inc. is an American telecommunications company headquartered in Denver, Colorado, with European headquarters in London.2

Corporate structure

Zayo Group sits at the top of its group. 2 entities, 2 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Zayo Group Denver

Built from subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

The story

Founded by Dan Caruso in 2007.1

Leadership

Who has led Zayo Group, and when. Pick a name to see everywhere that person has worked.

Subsidiaries and ownership

Subsidiaries

From Wikidata.1

Acquisitions

  1. Jan 15, 2016Acquired Allstream Inc.1

Timeline

  1. 2007Founded Founded1

Funding

Where the company's money came from, by calendar year: private offerings filed with the SEC, federal grants, loans, contracts and other assistance from USAspending.gov, and PPP loans from the SBA. Each bar links to the records below.

Money received by year$597.2M 2012–2026
Figures by year
YearFederal grantsOther federal assistanceFederal contractsTotal
2026–$11.4M$7.7M$19.1M
2025$41.0M$81.5M$7.3M$129.8M
2024–$26.7M$7.8M$34.5M
2023$92.9M$19.6M$8.6M$121.1M
2022–$43.2M$8.8M$52.0M
2021–$4.7M$9.7M$14.4M
2020–$11.0M$8.4M$19.3M
2019–$136.4M$7.9M$144.3M
2018––$9.4M$9.4M
2017––$5.8M$5.8M
2016––$8.0M$8.0M
2015––$4.0M$4.0M
2014––$2.9M$2.9M
2013––$626.9K$626.9K
2012$31.9M––$31.9M

Federal awards

Obligated amounts from USAspending.gov4, by calendar year, 2012–2026, for its registration. Obligations are what agencies committed, not always what was paid out. Contracts pay for goods and services; grants, loans and direct payments are assistance. Loans are charted at the face value of the loans listed here. An award’s amount below is its lifetime total, and some began before the years charted.

Largest grants

  1. Jul 1, 2023$55.1M from National Institute of Standards and Technology: Middle Mile (Broadband) Grant Program5 To ZAYO GROUP LLC Award 0840MM217
  2. Jul 1, 2023$21.1M from National Institute of Standards and Technology: Middle Mile (Broadband) Grant Program6 To ZAYO GROUP LLC Award 0840MM216
  3. Oct 1, 2011$19.1M from National Telecommunications and Information Administration: Broadband Technology Opportunities Program (Btop)7 To ZAYO GROUP LLC Award NT12BIX5570001
  4. Jul 1, 2023$13.7M from National Institute of Standards and Technology: Middle Mile (Broadband) Grant Program8 To ZAYO GROUP LLC Award 0840MM228
  5. Oct 1, 2011$12.8M from National Telecommunications and Information Administration: Broadband Technology Opportunities Program (Btop)9 To ZAYO GROUP LLC Award NT12BIX5570002

Largest direct payments

  1. $33.8M from Federal Communications Commission: Universal Service Fund - Schools And Libraries10 To ZAYO GROUP LLC Award SL-1899072908
  2. $31.2M from Federal Communications Commission: Universal Service Fund - Schools And Libraries11 To ZAYO GROUP LLC Award SL-1899064872
  3. $21.0M from Federal Communications Commission: Universal Service Fund - Schools And Libraries12 To ZAYO GROUP LLC Award SL-1899083023

Largest contracts

  1. May 16, 2022$19.8M from Office of the Assistant Secretary for Financial Resources: Wide area network services13 To ZAYO GROUP LLC Award 75N97022F00043
  2. Nov 25, 2015$8.4M from Food and Drug Administration: Igf::ct::igf - dark fiber lease and maintenance between fda's whitge oak data center and contractor hosted data center in ashburn, va.14 To ZAYO GROUP LLC Award HHSF223201610001C
  3. Feb 26, 2021$7.1M from Food and Drug Administration: Dark fiber circuits15 To ZAYO GROUP LLC Award 75F40121C00026
  4. Feb 1, 2021$5.7M from National Institutes of Health: Fishers lane and twinbrook dark fiber lines annual lease renewal16 To ZAYO GROUP LLC Award 75N93021F00087
  5. Nov 23, 2010$5.6M from Food and Drug Administration: Maintenance to the existing dark fiber optic communications infrastructure between the multiple fda metropolitan area network (man) sites an17 To ZAYO GROUP LLC Award HHSF223201110001C