# Zayo Group

> Zayo Group is a Denver-based communications infrastructure company that owns and operates one of North America and Europe's largest fiber-optic networks - over 150,000 route miles after its 2026 acquisition of Crown Castle's fiber business. It sells the physical layer of the internet: dark fiber, wavelengths, Ethernet, IP transit, dedicated internet access, colocation and managed edge services to wireless carriers, hyperscalers, enterprises, governments and ISPs. Founded in 2007 on a contrarian bet that bandwidth demand would only explode, Zayo has spent its life buying and building fiber, and is now positioning that network as the backbone for AI workloads moving data between data centers.

- **Founded:** 2007
- **Headquarters:** Denver, Colorado, United States
- **Founders:** Dan Caruso (Co-founder & former CEO/Chairman), John Scarano (Co-founder), Matt Erickson (Co-founder)
- **Team size:** ~3,800 employees
- **Products:** Dark Fiber, Wavelengths, Dedicated Internet Access & IP Transit, Ethernet, Data Center Colocation
- **Notable:** Built one of the largest fiber networks in North America and Europe - 150,000+ route miles after the Crown Castle deal., Completed 40+ acquisitions between 2007 and today, including AboveNet ($2.2B) and 360networks., 2014 IPO raised $600 million on the NYSE.

## Products & services

- **Dark Fiber** — Leased unlit fiber strands that customers light and control themselves, for maximum capacity, privacy and scalability.
- **Wavelengths** — Dedicated point-to-point optical connections up to 400G for high-capacity, low-latency transport between sites and data centers.
- **Dedicated Internet Access & IP Transit** — High-bandwidth internet connectivity and IP transit for carriers, enterprises and content providers.
- **Ethernet** — Scalable private Layer 2 connectivity for point-to-point and multipoint enterprise networks.
- **Data Center Colocation** — Space, power and cross-connects in Zayo-connected facilities for hosting compute and storage near the network.
- **Mobile Infrastructure (Fiber-to-the-Tower & Small Cells)** — Backhaul and fronthaul fiber connecting cell towers, small cells and DAS for wireless carriers.
- **Managed Edge, SD-WAN & SASE** — Managed connectivity, software-defined WAN and secure access services at the network edge.
- **Network Security & DDoS Protection** — Cloud-based DDoS mitigation and security services riding on Zayo's owned backbone.

## Achievements

- Built one of the largest fiber networks in North America and Europe - 150,000+ route miles after the Crown Castle deal.
- Completed 40+ acquisitions between 2007 and today, including AboveNet ($2.2B) and 360networks.
- 2014 IPO raised $600 million on the NYSE.
- Taken private in 2020 for ~$14.3 billion by EQT and Digital Colony.
- Closed the $4.25B Crown Castle Fiber Solutions acquisition in 2026.
- Reached 100% 400G network enablement and added over 1.3 million fiber miles globally in 2025.
- Raised more than $6 billion in asset-backed securitization debt to fund network expansion.

## Latest updates

- **2026-05** — Closed the $4.25 billion acquisition of Crown Castle's Fiber Solutions business, adding ~90,000 route miles and pushing the network past 150,000 route miles.
- **2026-01** — Issued $2.37 billion in asset-backed term notes, its fourth ABS transaction, bringing total ABS debt raised past $6 billion.
- **2026-01** — Announced plans to build 5,000 new route miles of long-haul fiber to serve AI workload demand.
- **2025-07** — Reached 100% 400G enablement across its network and expanded with new long-haul routes.

## Links

- Website: https://www.zayo.com
- LinkedIn: https://www.linkedin.com/company/zayo-group
- Twitter/X: https://twitter.com/ZayoGroup
- YouTube: https://www.youtube.com/c/ZayoGroup
- Facebook: https://www.facebook.com/zayogroup

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Profile page: https://yespress.io/zayo-group
Published by YesPress — https://yespress.io
Last updated: 2026-06-11