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
1805 29th St, Boulder, CO 80301

Dan Caruso

Company Type:
Owned by a Carrier, but operates as Carrier-Neutral

Zayo Locations

Show Sites
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 Phoenix
3110 N Central Ave Phoenix
AZ 85012
Located in Phoenix
zColo Dallas (Harry Hines)
8600 Harry Hines Blvd
Dallas, TX 75235
Located in Dallas
  • 12,245 Gross SqFt
zColo Chicago 800 E. Business Center
800 E Business Center Dr
Mt Prospect, IL 60056
Located in Chicago
  • 65,000 Gross SqFt
  • 16.0 Megawatts
zColo Minneapolis 511
511 11th Ave S
Minneapolis, MN 55415
Located in Minneapolis St Paul
  • Does not own Owns the Building
zColo Strasbourg
5 Rue du Havre
67100 Strasbourg, France
Located in France
  • 0.4 Megawatts
  • Does not own Owns the Building
zColo NYC-60 Hudson
60 Hudson Street
New York, NY 10013
Located in New York
  • 47,500 Gross SqFt
  • Does not own Owns the Building
zColo Philadelphia-401 Broad
401 N. Broad Street
Philadelphia, PA
Located in Philadelphia
  • 9,800 Gross SqFt
zColo Los Angeles 707 Wilshire
707 Wilshire Boulevard
Los Angeles, CA 90017
Located in Los Angeles
  • 7,465 Gross SqFt
  • 0.4 Megawatts
zColo Minneapolis-10300 6th
10300 6th Avenue North
Plymouth, MN
Located in Minneapolis St Paul
  • 7,782 Gross SqFt


Formerly operated by "Green Data Centers" company
Grand Opening Tour of Velizy Facility
Posted in zColo Paris Vélizy Source: Zayo
Formerly operated by "Green Data Centers" company
Datacenter GDC3 Velizy
Posted in zColo Paris Vélizy

Formerly operated by "Green Data Centers" company