Dark fiber and wavelength network providers

Results for this buyer need

Enterprises, hyperscalers, and carriers procuring long-haul dark fiber or high-capacity wavelength transport to interconnect distributed data centers

10 companies returned. Positions belong to this saved response, not an overall market ranking.

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A linked name opens a matching company listing; the link does not verify the model’s product claims.

1. #1
   Zayo Group Holdings, Inc.

   Operates extensive long-haul and metro dark fiber across North America and Western Europe, offering high-count dark fiber pairs and 400G+ wavelength transport purpose-built for hyperscale and enterprise data center interconnect.

2. #2
   Lumen Technologies, Inc. →

   Controls one of North America's largest intercity fiber backbones with extensive transatlantic routes, providing next-generation ultra-low-loss dark fiber and 400G optical wavelengths connecting thousands of commercial and colocation data centers.

3. #3
   Colt Technology Services Group Limited

   Provides dense pan-European long-haul networks and metro fiber rings connecting over 1,000 data centers, supporting both raw dark fiber IRUs and fully transparent high-speed optical wavelength services across Europe and transatlantic paths.

4. #4
   Arelion Sweden AB

   Operates a global Tier-1 optical backbone across North America and Europe, delivering point-to-point 400GE/DWDM wavelength connectivity and selective long-haul dark fiber routes optimized for low latency between carrier-neutral facilities.

5. #5
   euNetworks Group Limited →

   Specializes heavily in Western European data center interconnect, engineering custom high-count dark fiber superhighways and long-haul wavelength infrastructure connecting major cloud clusters across cities like Frankfurt, London, Amsterdam, and Paris.

6. #6
   EXA Infrastructure →

   Maintains dedicated European and transatlantic digital infrastructure, supplying hyperscalers and wholesale carriers with extensive long-haul dark fiber routes, subsea cable connectivity, and 400G wavelength capacity.

7. #7
   Uniti Group Inc.

   Delivers comprehensive national long-haul and regional dark fiber and high-capacity wavelength transport across the United States, linking tier-1 and tier-2 data center clusters, subsea landing stations, and enterprise aggregation points.

8. #8
   Crown Castle Inc. →

   Maintains an extensive footprint of metro and regional optical infrastructure across the United States, offering high-availability dark fiber leases and dedicated 100G/400G wavelengths to connect distributed multi-tenant data centers.

9. #9
   Cogent Communications Holdings, Inc. →

   Provides long-haul, intercity optical wave transport and high-bandwidth interconnects across both North America and Europe, targeting carrier-neutral data centers with predictable-latency transparent wavelength channels.

10. #10
    Verizon Communications Inc. →

    Maintains a massive global optical network supplying dedicated long-haul optical wavelength links up to 400G and selective dark fiber infrastructure for hyperscale interconnects, enterprise private backbones, and carrier handoffs.