Zayo Group
Zayo provides bandwidth infrastructure including dark fiber, lit fiber, and IP services across North America and Europe, serving carriers, enterprises, and cloud providers.
Zayo Group overview
Zayo Group operates one of the largest independent fiber networks in North America and Western Europe, with over 133,000 route miles of fiber connecting major metropolitan markets, data centers, and cloud provider facilities. Zayo specializes in providing the underlying bandwidth infrastructure that powers the internet.
Unlike traditional carriers that sell packaged internet services, Zayo focuses on infrastructure-level solutions: dark fiber, wavelengths, dedicated internet, and colocation. Their customers include other carriers, hyperscale cloud providers, content delivery networks, financial trading firms, and enterprises with significant bandwidth requirements.
Zayo's network is designed for organizations that need massive bandwidth, ultra-low latency, or direct cloud connectivity. Their fiber reaches into over 12,600 buildings and connects to 400+ data centers and cloud on-ramps across their footprint. For businesses in Zayo-lit buildings, they can often deliver service in days rather than months.
Key specifications
Technical details and service parameters for Zayo Group.
Speed Range
100 Mbps — Unlimited (dark fiber)
Dedicated: 400 Gbps wavelengths
Uptime SLA
99.999% availability on dark fiber; 99.99% on lit services with financial credits
Coverage
Extensive fiber network across North America with 133,000+ route miles connecting major markets, data centers, and cloud on-ramps.
Support
24/7/365 Network Operations Center with proactive monitoring
Contract Terms
12-60 months for lit services; 10-20 years for dark fiber
Best For
Data-intensive businesses and carriers needing high-capacity fiber infrastructure
Services offered
Who uses Zayo Group?
Zayo Group is typically used by organizations that need data-intensive businesses and carriers needing high-capacity fiber infrastructure. Common customer profiles include:
Zayo Group at a glance
Frequently asked questions about Zayo Group
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