Zayo Joins U.S. Carrier Ethernet Leaderboard
The company ascended to the industry ranking following its acquisition of Crown Castle Fiber Solutions.
Updated on Oct. 15, 2026 in Telecommunications
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Zayo has reached the sixth spot on the Mid-2026 U.S. Carrier Ethernet LEADERBOARD as of June 30, 2026. This promotion reflects the company's increased retail port share following its acquisition of Crown Castle Fiber Solutions.
Why it matters
The move recognizes Zayo's significant expansion in network capacity and enterprise reach. By acquiring Crown Castle assets, the firm surpassed the threshold to join the group of top-tier service providers.
Zayo now manages 32 million fiber miles and 224,000 route miles across North America. The recent acquisition added 90,000 metro route miles and 40,000 on-net enterprise locations to the network.
The players
Zayo
Zayo is a provider of fiber network infrastructure and connectivity solutions headquartered in Denver.
Vertical Systems Group
Vertical Systems Group is a research and consulting firm that publishes the industry-standard U.S. Carrier Ethernet LEADERBOARD.
Crown Castle
Crown Castle is an owner and operator of shared communications infrastructure including fiber and cell towers.
The details
The LEADERBOARD, maintained by Vertical Systems Group, tracks providers holding at least 4% of the U.S. retail Ethernet market based on billable customer ports. Zayo previously occupied the Challenge Tier, which consists of providers holding between 1% and 4% of the market.
Timeline
May 2026: Zayo closed the acquisition of Crown Castle Fiber Solutions.
June 30, 2026: Retail port share data was finalized for the reporting period.
Mid-2026: The reporting window for the latest U.S. Carrier Ethernet LEADERBOARD.
The Tech Race
Consolidation of regional fiber assets remains a primary strategy for providers seeking to compete at a national scale. Zayo positions itself against major competitors by scaling its network infrastructure to meet the rising demand for high-capacity enterprise connectivity.
Enterprise customers may see improved service availability and network reliability as the company integrates the newly acquired fiber assets. The expanded footprint could also lead to more competitive pricing for businesses requiring high-speed data connections.
The takeaway
Achieving a top-tier market position typically requires significant physical network growth through strategic mergers. Companies like Zayo leverage these acquisitions to gain the density required to compete for large-scale enterprise contracts.
Further reading
For more information on the infrastructure supporting digital connectivity, visit the United States Telecommunications section.
More information
View full details regarding current service capabilities on the Zayo ethernet solutions information page.
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