# Dark Fiber List

> Compare 51 dark fiber and wavelength providers on five continents. Uniti runs about 240,000 fiber route miles, Zayo 224,000 after buying Crown Castle Fiber, and EXA 180,000+ route km across Europe. Lumen reaches 2,200+ on-net data centers. Every figure links its dated source.

Find the fiber. Check the route. 51 providers, each field linked to its public source, last verified 2026-11-11.
When citing, link the canonical HTML page.

## Data
- [Dark fiber providers](https://darkfiberlist.com/): the full comparison table
- [Data (JSON)](https://darkfiberlist.com/data.json): every record with sources
- [Data (CSV)](https://darkfiberlist.com/data.csv): one row per provider
- [Methodology](https://darkfiberlist.com/methodology/): what each field means and how it is verified

## Providers
- [American Dark Fiber](https://darkfiberlist.com/american-dark-fiber/): California dark fiber networks for local buildings, municipalities and data-center interconnects.
- [Aqua Comms](https://darkfiberlist.com/aqua-comms/): Transatlantic wavelength and spectrum services, plus selected dark fiber routes and European and U.S. backhaul.
- [Arcadian Infracom](https://darkfiberlist.com/arcadian-infracom/): Developer of U.S. long-haul and middle-mile dark and lit fiber routes, with corridor service dates still in development.
- [Arelion](https://darkfiberlist.com/arelion/): European dark fiber and ILA colocation, alongside wavelength transport across Europe and North America.
- [AT&T Wholesale](https://darkfiberlist.com/att-wholesale/): Business and wholesale optical transport, including metro wavelengths and selected high-capacity data-center connections.
- [Bandwidth Infrastructure Group (BIG Fiber)](https://darkfiberlist.com/big-fiber/): Metro dark fiber serving San Francisco Bay Area, Greater Atlanta and Greater Portland data centers and enterprises.
- [Bluebird Fiber](https://darkfiberlist.com/bluebird-fiber/): Midwest dark fiber leases on the combined Bluebird and former Everstream network, with dense metro rings.
- [BSO](https://darkfiberlist.com/bso/): Tokyo metro dark fiber connectivity and European data-center interconnect infrastructure for financial and AI workloads.
- [Cirion Technologies](https://darkfiberlist.com/cirion/): Latin American dark fiber with customer-operated optics, including a documented Caracas metro deployment.
- [CityFibre](https://darkfiberlist.com/cityfibre/): Wholesale dark fibre for partners running their own optical equipment, with site-to-site and access applications.
- [Cogent Communications](https://darkfiberlist.com/cogent/): Optical wavelength transport for North American data-center interconnects, with metro and coast-to-coast routes.
- [Colt](https://darkfiberlist.com/colt/): Metro and long-haul dark fibre for wholesale and enterprise networks, including the combined Colt and former Lumen EMEA fiber estate.
- [Conterra Networks](https://darkfiberlist.com/conterra/): Custom dark fiber segments, rings and networks, with optical transport for regional carrier and enterprise buyers.
- [Crosslake Fibre](https://darkfiberlist.com/crosslake-fibre/): Dark fiber and lit capacity across Lake Ontario and the English Channel, with further Canadian intercity infrastructure in development.
- [DFA / Dark Fibre Africa](https://darkfiberlist.com/dfa/): South African open-access metro and intercity dark fiber, with leased pairs and named long-haul data-center corridors.
- [DQE Communications](https://darkfiberlist.com/dqe/): Dark fiber leases and long-term rights on regional routes in Pennsylvania, West Virginia and Maryland.
- [euNetworks](https://darkfiberlist.com/eunetworks/): European dark fibre pairs and bulk fibre for inter-data-center links within and between cities.
- [Eurofiber](https://darkfiberlist.com/eurofiber/): European open-access fiber infrastructure with dark fiber and international long-haul connectivity.
- [EXA Infrastructure](https://darkfiberlist.com/exa-infrastructure/): Owned dark fibre and duct for long-haul backbones, metro access and private data-center interconnect builds.
- [Fatbeam](https://darkfiberlist.com/fatbeam/): Western U.S. dark fiber leases and fiber infrastructure for commercial, education, government and carrier networks.
- [FiberLight](https://darkfiberlist.com/fiberlight/): Metro and long-haul dark fiber with custom routes for data centers, hyperscalers, carriers and enterprises.
- [FirstLight](https://darkfiberlist.com/firstlight/): Dedicated unlit fiber and custom topologies for Northeast and mid-Atlantic enterprise and carrier networks.
- [GasLINE](https://darkfiberlist.com/gasline/): German dark fibre infrastructure, including gas-pipeline-corridor routes and connections to telecom hubs.
- [GlobalConnect Carrier](https://darkfiberlist.com/globalconnect/): Northern European dark fiber backbone and metro access for carriers and infrastructure buyers.
- [Hunter Communications](https://darkfiberlist.com/hunter-communications/): Regional dark fiber for enterprise networks in Oregon and Northern California, with customer-operated transmission equipment.
- [Lightpath](https://darkfiberlist.com/lightpath/): Owned metro dark fiber and selected long-haul routes for data-center and enterprise connectivity.
- [Lightstorm](https://darkfiberlist.com/lightstorm/): Carrier-neutral optical and virtual data-center interconnect services on an Indian fiber backbone.
- [Liquid Intelligent Technologies](https://darkfiberlist.com/liquid-intelligent-technologies/): Pan-African fiber infrastructure and dark fibre services governed by route-specific service schedules.
- [Lumen](https://darkfiberlist.com/lumen/): Customer-operated dark fiber across North American metro and intercity routes, with an optional managed optical network.
- [MOX Networks](https://darkfiberlist.com/mox-networks/): Dark fiber on named U.S. corridors alongside wavelength and dark-fiber-channel services.
- [Neos Networks](https://darkfiberlist.com/neos-networks/): UK dark fibre for backbone expansion, backhaul and data-center interconnect, with custom builds and partner access where needed.
- [Open Fiber](https://darkfiberlist.com/open-fiber/): Italian wholesale unlit fiber pairs with same-PoP, cross-PoP and extraurban long-distance connection options.
- [Relined Fiber Network](https://darkfiberlist.com/relined/): Dark fiber metro and national connections across the Netherlands, Germany and Denmark.
- [RETN](https://darkfiberlist.com/retn/): European metro dark fiber and international optical transport, with documented Warsaw and Germany–Poland routes.
- [Segra](https://darkfiberlist.com/segra/): Custom dark fiber networks with point-to-point, ring and hub-and-spoke configurations for U.S. businesses and carriers.
- [Sipartech](https://darkfiberlist.com/sipartech/): Bespoke dark fiber routes with customer-controlled lighting and provider-maintained fiber.
- [Sparkle](https://darkfiberlist.com/sparkle/): International wavelength, spectrum and tailored dark fiber services on European, Mediterranean and Americas infrastructure.
- [SummitIG](https://darkfiberlist.com/summitig/): Purpose-built dark fiber in U.S. data-center metros and on Virginia regional long-haul routes.
- [Superloop](https://darkfiberlist.com/superloop/): Dedicated unlit fiber on Superloop metro and intercity infrastructure for Australian enterprise networks.
- [Tampnet Carrier](https://darkfiberlist.com/tampnet/): Nordic and European dark fiber, spectrum and optical capacity with offshore-derived subsea route diversity.
- [Tata Communications](https://darkfiberlist.com/tata-communications/): Optical private-line and DWDM connectivity for data-center backbones, with documented Indian metro and intercity deployments.
- [Telstra InfraCo](https://darkfiberlist.com/telstra-infraco/): Australian capital-city metro dark fiber pairs for customers operating their own optical equipment.
- [Telxius](https://darkfiberlist.com/telxius/): Subsea and terrestrial capacity connecting Europe and the Americas, with carrier data-center backhaul.
- [UFINET](https://darkfiberlist.com/ufinet/): Wholesale dark fiber across Latin America for short-, medium- and long-distance network requirements.
- [Uniti Wholesale](https://darkfiberlist.com/uniti/): Wholesale dark fiber infrastructure serving U.S. and Canadian connectivity buyers within the combined Uniti group.
- [Verizon Partner Solutions](https://darkfiberlist.com/verizon-partner-solutions/): Wholesale DWDM transport between data centers, cloud sites and cable landings, with route and protection options.
- [Vocus](https://darkfiberlist.com/vocus/): Australian metro dark fibre pairs for enterprise and wholesale buyers operating their own transmission equipment.
- [WANRack](https://darkfiberlist.com/wanrack/): Custom U.S. dark and lit fiber networks for schools, healthcare, enterprises and carriers.
- [WIOCC](https://darkfiberlist.com/wiocc/): Wholesale wavelength, spectrum and capacity services linking African terrestrial networks to international subsea systems.
- [Zayo](https://darkfiberlist.com/zayo/): Metro and long-haul dark fiber for carriers, enterprises and data-center networks.
- [Ziply Fiber Wholesale](https://darkfiberlist.com/ziply-fiber/): Dark fiber and managed wavelengths linking Pacific Northwest metro networks with intercity U.S. backbone routes.

## Optional
- [All records in one file](https://darkfiberlist.com/llms-full.txt)
- [Sitemap](https://darkfiberlist.com/sitemap.xml)

## Coverage shortlists
- [North American fiber network providers](https://darkfiberlist.com/coverage/north-america/): Compare North American dark fiber and wavelength providers by metro coverage, intercity routes, dated network footprint and data-center access evidence.
- [European fiber network providers](https://darkfiberlist.com/coverage/europe/): Compare European dark fibre and optical transport providers by country, metro and backbone reach, network measurement scope and data-center access notes.
- [Asia-Pacific fiber network providers](https://darkfiberlist.com/coverage/asia-pacific/): Find Asia-Pacific dark fibre and wavelength providers for Australian metro pairs, Indian data-center backbones and selected Asian optical network routes.
- [Latin American fiber network providers](https://darkfiberlist.com/coverage/latin-america/): Compare Latin American dark fiber, metro deployments and international optical transport, with source-linked coverage and original network scope notes.
- [African fiber and optical providers](https://darkfiberlist.com/coverage/africa/): Compare African open-access dark fibre and wholesale optical providers by documented service geography, fiber-network scope, terms and data-center access.
- [AI and hyperscaler fiber projects](https://darkfiberlist.com/coverage/ai-hyperscaler/): AI and hyperscaler fiber deals from Zayo, Lumen, Uniti, Lightpath, BSO and Telxius: NVIDIA, Microsoft, Meta, AWS and Google, with dates and build status.