Zayo Group is telecom and fiber company. The company is publicly traded on the NYSE under the ticker ZAYO.

Zayo was founded in 2007 and is a provider of Network, Fiber, Cloud and Colocation services. The colocation division is known as zColo.

Zayo Company History:

Zayo has been a skilled acquirer of Fiber, Network, and Data Center companies.


  • Zayo acquired Allstream, a Canadian, telecommunications company that had been in business for 170 years. Initially established as a telegraph service provider over Canada's first transcontinental railroad.
  • Electric Lightwave (ELI) was acquired for $1.42 billion. ELI had previously acquired Integra Telecom


  • Zayo acquired the Fiber and Enterprise divisions of IdeaTek Systems for $52 Million. The acquisition added fiber footprint in Kansas.
  • Zayo acquired Latisys, a data center and IaaS Cloud provider for $675 Million


  • Zayo completed an IPO on the NYSE which raised $278 million providing a market cap of $5
  • Zayo acquired Colo Facilities Atlanta (aka AtlantaNAP)
  • Zayo acquired Neo Telecoms
  • Zayo acquired Geo Networks Ltd
  • Zayo acquired CoreXchange, Inc., a Dallas based data center operator


  • Zayo acquired Core NAP, an Austin based data center operator
  • Zayo acquired Access Communications, Inc for its Minneapolis-St Paul fiber network
  • Zayo acquired FiberLink, a Mid-West dark fiber operator


  • Zayo acquired AboveNet
  • Zayo acquired Arialink for fiber assest in Lansing and Ann Arbor Michigan
  • Zayo acquired FiberGate for fiber assets in the greater Washington DC area
  • Zayo acquired USCarrier
  • Zayo acquired First Telecom Services
  • Zayo acquired Litecast/Balticore for $22 Million


  • Zayo acquired 360networks for $345 Million
  • Zayo acquired MarquisNet data center business in Las Vegas


  • Zayo acquired AGL Networks
  • Zayo acquired American Fiber Solutions
  • Zayo acquired Dolphini’s Cummins Station data centers


  • Zayo acquired FiberNet Telecom Group, Inc


  • Zayo acquired Citynet Fiber Network (CFN), the wholesale division of integrated communications provider, Citynet
  • Zayo acquired Columbia Fiber Solutions
  • Zayo acquired some assets of Adesta Communications
  • Zayo acquired a Fiber network from Northwest Telephone
  • Zayo acquired a Fiber network from CenturyTel


  • Zayo Founded and raised $225 Million in private equity funding.
  • Zayo acquired Memphis Networx
  • Zayo acquired PPL Telecom
  • Zayo acquired Indiana Fiber Works
  • Zayo acquired VoicePipe
  • Zayo acquired Onvoy
Zayo Logo
Parent Company:
1805 29th St, Boulder, CO 80301
: Privately Held
Year Founded:

Dan Caruso

Retail Colocation (Cabinets, Cages, RU)
Company Type:
Owned by a Carrier, but operates as Carrier-Neutral



Zayo News Add Post

Zayo Data Center Map

Zayo Locations

Show Sites
zColo Santa Clara
5101 Lafayette Street
Santa Clara, CA
Located in San Francisco Bay Area
  • 26,900 Gross SqFt
  • 3.0 Megawatts
zColo McLean
1764A Old Meadow Road
McLean, VA
Located in Northern Virginia
  • 62,500 Gross SqFt
  • 3.0 Megawatts

Zayo's acquired the McLean site in April 218. It was previously owned by PAETEC and Windstream.

zColo Latisys Ashburn Red Rum
21635 Red Rum Drive
Ashburn, VA 20147
Located in Ashburn: Data Center Alley
  • 72,000 Gross SqFt
  • 10.13 Megawatts
zColo Latisys Chicago (Oak Brook)
1808 Swift Road
Oak Brook, IL 60523
Located in Chicago
  • 147,000 Gross SqFt
  • 17.0 Megawatts
zColo Latisys 393 Inverness
393 Inverness Parkway
Englewood, CO 80112
Located in Denver
  • 53,289 Gross SqFt
  • 5.2 Megawatts

The site is a former Latisys (Data 393) data center that was acquired in 2015.

zColo Latisys 17222 Von Karman
17222 Von Karman Avenue
Irvine, CA 92614
Located in Los Angeles
  • 52,800 Gross SqFt
  • 6.0 Megawatts
zColo Cincinnati-334 Gest
334 Gest Street
Cincinnati, OH
Located in Cincinnati
  • 12,200 Gross SqFt
zColo Cleveland-1525 Rockwell
1525 Rockwell
Cleveland, OH
Located in Cleveland
  • 7,500 Gross SqFt
zColo Columbus-251 Neilston
251 Neilston
Columbus, OH
Located in Columbus
  • 6,822 Gross SqFt
zColo Dallas (Harry Hines)
8600 Harry Hines Blvd
Dallas, TX 75235
Located in Dallas
  • 12,245 Gross SqFt


July 2019

Zayo's remote hands service and options


Formerly operated by "Green Data Centers" company

Formerly operated by "Green Data Centers" company
Datacenter GDC3 Velizy
Posted in zColo Paris Vélizy

Formerly operated by "Green Data Centers" company

Grand Opening Tour of Velizy Facility
Posted in zColo Paris Vélizy Source: Zayo