Code: MTA3928 | Publication Date: Jun 2025 |
Top Dark fiber companies
The growth of this industry is proliferated by exponential rise in cloud computing, IoT applications, and the global 5G rollout, creating surging requirements for low-latency and secure private networks.
Apart from this, another pivotal driver is the proliferation of cloud and edge data centers, which increasingly rely on dark fiber to support massive interconnectivity demands which makes dark fiber the backbone of next-gen digital infrastructure. Additionally, the growth is further bolstered by telecom operators’ need to boost bandwidth capacities in response to soaring data traffic.
Company | Zayo Group |
Headquarters | Boulder, Colorado, USA |
Established Year | 2007 |
Website | Click here |
Zayo is a major provider of dark fiber infrastructure, offering extensive fiber networks across North America and Europe. It supports carriers, hyperscalers, and enterprises with high-capacity solutions.
Company | Crown Castle Inc. |
Headquarters | Houston, Texas, USA |
Established Year | 1994 |
Website | Click here |
Crown Castle operates thousands of route miles of fiber and provides dark fiber to support mobile carriers, data centers, and businesses needing scalable bandwidth.
Company | Lumen Technologies, Inc. |
Headquarters | Monroe, Louisiana, USA |
Established Year | 1930 |
Website | Click here |
Lumen provides one of the largest fiber networks globally, including extensive dark fiber offerings for high-performance, low-latency connectivity solutions.
Company | Colt Technology Services Group Limited |
Headquarters | London, United Kingdom |
Established Year | 1992 |
Website | Click here |
Colt delivers dark fiber solutions across Europe and Asia, focusing on enterprise and financial services customers with secure and flexible network infrastructure.
Company | euNetworks Group Limited |
Headquarters | London, United Kingdom |
Established Year | 2002 |
Website | Click here |
euNetworks operates metropolitan fiber networks in major European cities and specializes in dark fiber, wavelength, and high-bandwidth services.
Company | Lightower Fiber Networks |
Headquarters | Boxborough, Massachusetts, USA |
Established Year | 2006 |
Website | Click here |
Acquired by Crown Castle, Lightower was a key player in the U.S. Northeast, offering custom dark fiber networks for enterprises, carriers, and government.
Company | FiberLight, LLC |
Headquarters | Alpharetta, Georgia, USA |
Established Year | 2005 |
Website | Click here |
FiberLight provides custom-built dark fiber solutions across Texas, the Southeast, and Mid-Atlantic regions, serving industries with mission-critical bandwidth needs.
Company | Hexatronic Group AB |
Headquarters | Gothenburg, Sweden |
Established Year | 1993 |
Website | Click here |
Hexatronic delivers fiber optic infrastructure, including passive dark fiber systems, mainly for telecom, enterprise, and municipal networks in Europe and North America.
Company | Arelion |
Headquarters | Solna, Sweden |
Established Year | 2000 |
Website | Click here |
Arelion operates a global backbone with dark fiber capabilities, providing scalable infrastructure to carriers and hyperscale companies across Europe, Asia, and North America.
Company | Reliance Jio Infocomm Ltd. |
Headquarters | Mumbai, Maharashtra, India |
Established Year | 2007 |
Website | Click here |
Jio offers one of the most expansive dark fiber networks in India, catering to telecom providers, ISPs, and enterprise customers with high-capacity connectivity solutions.