Company lists · Data refreshed November 2026
Top 25 Dark fiber operators worldwide
RevenueBase identified 545 company matches for dark fiber operators worldwide as of November 2026 and tracks 60,717 professional contacts across them, including 21,402 with verified work emails. The United States is the largest market and Madrid the largest hub.
This list covers company matches for dark fiber operators worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for dark fiber operators follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest dark fiber operators worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 16,043 contacts → | ||||
Exact match “Lumen is the trusted network for the AI-powered world, connecting people, data, and applications through one of the world’s most expansive fiber networks.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 11,739 contacts → | ||||
Exact match “Frontier, a Verizon company, is one of the largest fiber providers in the U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 3,886 contacts → | ||||
Exact match “For more than 18 years, Zayo Group of companies has helped the world’s most ambitious organizations build the infrastructure behind what’s next.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 2,100 contacts → | ||||
Exact match “Metronet, the nation's fastest-growing fiber-to-the-home builder, is now owned by a joint venture of T-Mobile, America's 5G leader, and KKR, the global investment firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 1,493 contacts → | ||||
Exact match “Hotwire Communications is a national leader in fiber optic technology, delivering advanced, customized telecommunications solutions to residential, commercial, senior-living…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 1,454 contacts → | ||||
Exact match “Bharti Airtel Limited is a leading global telecommunications company with operations in 20 countries across Asia and Africa.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 1,428 contacts → | ||||
Exact match “Uniti is a premier insurgent fiber provider dedicated to enabling mission-critical connectivity across the United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 1,303 contacts → | ||||
Exact match “UFINET is a Latin American carrier of carriers providing high-quality solutions in the wholesale telecom market.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 1,013 contacts → | ||||
Exact match “Segra owns and operates a wide and dense fiber-optic infrastructure footprint that provides state-of-the-art connectivity, cybersecurity, voice, cloud and colocation solutions…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 663 contacts → | ||||
Exact match “DFA finances, builds, installs, manages, and maintains a world-class dark fibre network to transmit metro and long-haul telecommunications traffic in South Africa.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 654 contacts → | ||||
Exact match “Lightpath builds and operates all-fiber infrastructure designed for the AI era.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 594 contacts → | ||||
Exact match “Uniti Fiber is a wholly owned subsidiary of Uniti Group,a publicly traded Real Estate Investment Trust (REIT).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 531 contacts → | ||||
Exact match “IPLAN es la compañía líder en la provisión de Conectividad, Datacenter, Soluciones IT y Servicios Cloud para las empresas de las principales ciudades de la Argentina.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 470 contacts → | ||||
Exact match “Eurofiber has been a provider of industry-leading open digital infrastructure since Utilizing our own fiberoptic network and datacenters, we provide smart, open, future-proof…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 400 contacts → | ||||
Exact match “LOGIX FIBER NETWORKS is a well-established Texas-based provider of telecommunications services since 1983.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 385 contacts → | ||||
Exact match “euNetworks (@euNetworks) is a European provider of bandwidth infrastructure services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 368 contacts → | ||||
Exact match “A VIP TELECOM é uma marca que faz parte do Grupo Alloha Fibra, a maior empresa independente de fibra Óptica no Brasil.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 351 contacts → | ||||
Exact match “InfiniVAN Fiber4Business offers premium Fiber Internet plans for your business needs!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 329 contacts → | ||||
Exact match “FiberLight builds and operates mission-critical high-bandwidth networks to ignite our clients' digital transformation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 321 contacts → | ||||
Exact match “Interoute is part of EXA Infrastructure, the largest dedicated digital infrastructure platform connecting Europe and North America, and owns kilometres of fibre network across 34…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 314 contacts → | ||||
Exact match “Há 23 anos no mercado, somos a primeira empresa de Internet e Telecomunicações da Região Serrana do Rio de Janeiro e pioneira no uso de Fibra Óptica no Brasil.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 306 contacts → | ||||
Exact match “Adamo is a telecom operator with Swedish origin operating in Spain since 2007.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 287 contacts → | ||||
Exact match “Conectando pessoas desde 2004, a Tely é a maior empresa de telecomunicações do Nordeste.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 274 contacts → | ||||
Exact match “Founded in 2021, Ripple Fiber® provides thousands of homes and businesses with brighter, faster fiber internet built for the speed of life.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 246 contacts → | ||||
Exact match “A propos du groupe XpFibre XpFibre est un Opérateur d’Infrastructure spécialisé dans la conception, la construction et l'exploitation de réseaux de fibre optique.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “dark fiber operators”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 545 dark fiber operators worldwide
See the full list, filter by size, metro and specialty, and access 21,402 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Dark fiber operators worldwide at a glance
As of Nov 6, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for dark fiber operators are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “dark fiber operators” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 21,402 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Dark fiber operators by location
5 lists · largest firstEvery Dark fiber operators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “dark fiber operators”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many dark fiber operators are there worldwide?
RevenueBase identified 545 company matches for dark fiber operators worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Lumen Technologies tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most dark fiber operators?
The United States leads with 141 companies, followed by Brazil (56) and Germany (29). Every dark fiber operators list by country and city is linked on this page.
Which city has the most dark fiber operators?
Madrid leads with 7 company records, followed by Amsterdam (5) and Berlin (5).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 21,402 professional contacts with verified work emails tracked across these 545 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 545 dark fiber operators worldwide. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
Company intelligence · public preview
Top 25 dark fiber operators worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 545 matching company records for dark fiber operators worldwide, with 60,717 tracked contacts and 21,402 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 dark fiber operators worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Lumen Technologieslumen.comHQ: Monroe, LA, United StatesReported employees: 10001+ | Monroe, LA, United States | 10001+ | Exact match | 16,043 contacts → |
“Lumen is the trusted network for the AI-powered world, connecting people, data, and applications through one of the world’s most expansive fiber networks.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Frontier Internetfrontier.comHQ: Dallas, TX, United StatesReported employees: 10001+ | Dallas, TX, United States | 10001+ | Exact match | 11,739 contacts → |
“Frontier, a Verizon company, is one of the largest fiber providers in the U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Zayo Groupzayo.comHQ: Denver, CO, United StatesReported employees: 5,001-10,000 | Denver, CO, United States | 5,001-10,000 | Exact match | 3,886 contacts → |
“For more than 18 years, Zayo Group of companies has helped the world’s most ambitious organizations build the infrastructure behind what’s next.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Metronetmetronet.comHQ: Evansville, IN, United StatesReported employees: 1,001-5,000 | Evansville, IN, United States | 1,001-5,000 | Exact match | 2,100 contacts → |
“Metronet, the nation's fastest-growing fiber-to-the-home builder, is now owned by a joint venture of T-Mobile, America's 5G leader, and KKR, the global investment firm.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Hotwire Communications LTDhotwirecommunications.comHQ: Fort Lauderdale, FL, United StatesReported employees: 1,001-5,000 | Fort Lauderdale, FL, United States | 1,001-5,000 | Exact match | 1,493 contacts → |
“Hotwire Communications is a national leader in fiber optic technology, delivering advanced, customized telecommunications solutions to residential, commercial, senior-living…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Airtel Kenyaairtel.comHQ: Nairobi, KenyaReported employees: 201-500 | Nairobi, Kenya | 201-500 | Exact match | 1,454 contacts → |
“Bharti Airtel Limited is a leading global telecommunications company with operations in 20 countries across Asia and Africa.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Uniti Group INCuniti.comHQ: Little Rock, AR, United StatesReported employees: 501-1,000 | Little Rock, AR, United States | 501-1,000 | Exact match | 1,428 contacts → |
“Uniti is a premier insurgent fiber provider dedicated to enabling mission-critical connectivity across the United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Ufinetufinet.comHQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 1,303 contacts → |
“UFINET is a Latin American carrier of carriers providing high-quality solutions in the wholesale telecom market.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  SEGRAsegra.comHQ: Charlotte, NC, United StatesReported employees: 1,001-5,000 | Charlotte, NC, United States | 1,001-5,000 | Exact match | 1,013 contacts → |
“Segra owns and operates a wide and dense fiber-optic infrastructure footprint that provides state-of-the-art connectivity, cybersecurity, voice, cloud and colocation solutions…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  DFAdfafrica.co.zaHQ: Bryanston, South AfricaReported employees: 501-1,000 | Bryanston, South Africa | 501-1,000 | Exact match | 663 contacts → |
“DFA finances, builds, installs, manages, and maintains a world-class dark fibre network to transmit metro and long-haul telecommunications traffic in South Africa.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Lightpathlightpathfiber.comHQ: Bethpage, NY, United StatesReported employees: 501-1,000 | Bethpage, NY, United States | 501-1,000 | Exact match | 654 contacts → |
“Lightpath builds and operates all-fiber infrastructure designed for the AI era.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Uniti Fiberunitifiber.comHQ: Mobile, TX, United StatesReported employees: 501-1,000 | Mobile, TX, United States | 501-1,000 | Exact match | 594 contacts → |
“Uniti Fiber is a wholly owned subsidiary of Uniti Group,a publicly traded Real Estate Investment Trust (REIT).” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Iplan Argentinaiplan.com.arHQ: Buenos Aires, ArgentinaReported employees: 201-500 | Buenos Aires, Argentina | 201-500 | Exact match | 531 contacts → |
“IPLAN es la compañía líder en la provisión de Conectividad, Datacenter, Soluciones IT y Servicios Cloud para las empresas de las principales ciudades de la Argentina.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Eurofibereurofiber.comHQ: Maarssen, NetherlandsReported employees: 501-1,000 | Maarssen, Netherlands | 501-1,000 | Exact match | 470 contacts → |
“Eurofiber has been a provider of industry-leading open digital infrastructure since Utilizing our own fiberoptic network and datacenters, we provide smart, open, future-proof…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Logix Fiber Networkslogix.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 400 contacts → |
“LOGIX FIBER NETWORKS is a well-established Texas-based provider of telecommunications services since 1983.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Eunetworkseunetworks.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 385 contacts → |
“euNetworks (@euNetworks) is a European provider of bandwidth infrastructure services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  VIP Telecomvipbrtelecom.com.brHQ: Mauá, BrazilReported employees: 501-1,000 | Mauá, Brazil | 501-1,000 | Exact match | 368 contacts → |
“A VIP TELECOM é uma marca que faz parte do Grupo Alloha Fibra, a maior empresa independente de fibra Óptica no Brasil.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Infinivan, INCinfinivan.comHQ: Pasig City, PhilippinesReported employees: 201-500 | Pasig City, Philippines | 201-500 | Exact match | 351 contacts → |
“InfiniVAN Fiber4Business offers premium Fiber Internet plans for your business needs!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Fiberlight, LLCfiberlight.comHQ: Plano, VA, United StatesReported employees: 201-500 | Plano, VA, United States | 201-500 | Exact match | 329 contacts → |
“FiberLight builds and operates mission-critical high-bandwidth networks to ignite our clients' digital transformation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Interouteexainfra.netHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 321 contacts → |
“Interoute is part of EXA Infrastructure, the largest dedicated digital infrastructure platform connecting Europe and North America, and owns kilometres of fibre network across 34…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Gigalinkgigalink.com.brHQ: Nova Friburgo, BrazilReported employees: 201-500 | Nova Friburgo, Brazil | 201-500 | Exact match | 314 contacts → |
“Há 23 anos no mercado, somos a primeira empresa de Internet e Telecomunicações da Região Serrana do Rio de Janeiro e pioneira no uso de Fibra Óptica no Brasil.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Adamo Telecom Iberia S.A.Uadamo.esHQ: Barcelona, SpainReported employees: 51-200 | Barcelona, Spain | 51-200 | Exact match | 306 contacts → |
“Adamo is a telecom operator with Swedish origin operating in Spain since 2007.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  TELYtely.com.brHQ: Joao Pessoa, BrazilReported employees: 201-500 | Joao Pessoa, Brazil | 201-500 | Exact match | 287 contacts → |
“Conectando pessoas desde 2004, a Tely é a maior empresa de telecomunicações do Nordeste.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Ripple Fiberripplefiber.comHQ: Charlotte, NC, United StatesReported employees: 201-500 | Charlotte, NC, United States | 201-500 | Exact match | 274 contacts → |
“Founded in 2021, Ripple Fiber® provides thousands of homes and businesses with brighter, faster fiber internet built for the speed of life.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Xpfibrexpfibre.comHQ: Courbevoie, FranceReported employees: 201-500 | Courbevoie, France | 201-500 | Exact match | 246 contacts → |
“A propos du groupe XpFibre XpFibre est un Opérateur d’Infrastructure spécialisé dans la conception, la construction et l'exploitation de réseaux de fibre optique.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 545 company matches
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Dark fiber operators: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
541 records in the displayed employee bands.
4 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 545 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Dark fiber operators by location
5 lists · largest firstEvery Dark fiber operators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for dark fiber operators?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many dark fiber operators did RevenueBase find worldwide?
The saved snapshot records 545 matching company records, 60,717 tracked contacts and 21,402 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
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Cite this list
RevenueBase Data Team. Top 25 dark fiber operators worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/dark-fiber-operators.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 dark fiber operators worldwide
RevenueBase records 545 matching company records for dark fiber operators worldwide, with 60,717 tracked contacts and 21,402 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 dark fiber operators worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Lumen Technologieslumen.com HQ: Monroe, LA, United StatesReported employees: 10001+ | Monroe, LA, United States | 10001+ | Exact match | 16,043 contacts → |
“Lumen is the trusted network for the AI-powered world, connecting people, data, and applications through one of the world’s most expansive fiber networks.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Frontier Internetfrontier.com HQ: Dallas, TX, United StatesReported employees: 10001+ | Dallas, TX, United States | 10001+ | Exact match | 11,739 contacts → |
“Frontier, a Verizon company, is one of the largest fiber providers in the U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Zayo Groupzayo.com HQ: Denver, CO, United StatesReported employees: 5,001-10,000 | Denver, CO, United States | 5,001-10,000 | Exact match | 3,886 contacts → |
“For more than 18 years, Zayo Group of companies has helped the world’s most ambitious organizations build the infrastructure behind what’s next.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Metronetmetronet.com HQ: Evansville, IN, United StatesReported employees: 1,001-5,000 | Evansville, IN, United States | 1,001-5,000 | Exact match | 2,100 contacts → |
“Metronet, the nation's fastest-growing fiber-to-the-home builder, is now owned by a joint venture of T-Mobile, America's 5G leader, and KKR, the global investment firm.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Hotwire Communications LTDhotwirecommunications.com HQ: Fort Lauderdale, FL, United StatesReported employees: 1,001-5,000 | Fort Lauderdale, FL, United States | 1,001-5,000 | Exact match | 1,493 contacts → |
“Hotwire Communications is a national leader in fiber optic technology, delivering advanced, customized telecommunications solutions to residential, commercial, senior-living…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Airtel Kenyaairtel.com HQ: Nairobi, KenyaReported employees: 201-500 | Nairobi, Kenya | 201-500 | Exact match | 1,454 contacts → |
“Bharti Airtel Limited is a leading global telecommunications company with operations in 20 countries across Asia and Africa.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Uniti Group INCuniti.com HQ: Little Rock, AR, United StatesReported employees: 501-1,000 | Little Rock, AR, United States | 501-1,000 | Exact match | 1,428 contacts → |
“Uniti is a premier insurgent fiber provider dedicated to enabling mission-critical connectivity across the United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Ufinetufinet.com HQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 1,303 contacts → |
“UFINET is a Latin American carrier of carriers providing high-quality solutions in the wholesale telecom market.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | SEGRAsegra.com HQ: Charlotte, NC, United StatesReported employees: 1,001-5,000 | Charlotte, NC, United States | 1,001-5,000 | Exact match | 1,013 contacts → |
“Segra owns and operates a wide and dense fiber-optic infrastructure footprint that provides state-of-the-art connectivity, cybersecurity, voice, cloud and colocation solutions…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | DFAdfafrica.co.za HQ: Bryanston, South AfricaReported employees: 501-1,000 | Bryanston, South Africa | 501-1,000 | Exact match | 663 contacts → |
“DFA finances, builds, installs, manages, and maintains a world-class dark fibre network to transmit metro and long-haul telecommunications traffic in South Africa.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Lightpathlightpathfiber.com HQ: Bethpage, NY, United StatesReported employees: 501-1,000 | Bethpage, NY, United States | 501-1,000 | Exact match | 654 contacts → |
“Lightpath builds and operates all-fiber infrastructure designed for the AI era.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Uniti Fiberunitifiber.com HQ: Mobile, TX, United StatesReported employees: 501-1,000 | Mobile, TX, United States | 501-1,000 | Exact match | 594 contacts → |
“Uniti Fiber is a wholly owned subsidiary of Uniti Group,a publicly traded Real Estate Investment Trust (REIT).” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Iplan Argentinaiplan.com.ar HQ: Buenos Aires, ArgentinaReported employees: 201-500 | Buenos Aires, Argentina | 201-500 | Exact match | 531 contacts → |
“IPLAN es la compañía líder en la provisión de Conectividad, Datacenter, Soluciones IT y Servicios Cloud para las empresas de las principales ciudades de la Argentina.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Eurofibereurofiber.com HQ: Maarssen, NetherlandsReported employees: 501-1,000 | Maarssen, Netherlands | 501-1,000 | Exact match | 470 contacts → |
“Eurofiber has been a provider of industry-leading open digital infrastructure since Utilizing our own fiberoptic network and datacenters, we provide smart, open, future-proof…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Logix Fiber Networkslogix.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 400 contacts → |
“LOGIX FIBER NETWORKS is a well-established Texas-based provider of telecommunications services since 1983.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Eunetworkseunetworks.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 385 contacts → |
“euNetworks (@euNetworks) is a European provider of bandwidth infrastructure services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | VIP Telecomvipbrtelecom.com.br HQ: Mauá, BrazilReported employees: 501-1,000 | Mauá, Brazil | 501-1,000 | Exact match | 368 contacts → |
“A VIP TELECOM é uma marca que faz parte do Grupo Alloha Fibra, a maior empresa independente de fibra Óptica no Brasil.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Infinivan, INCinfinivan.com HQ: Pasig City, PhilippinesReported employees: 201-500 | Pasig City, Philippines | 201-500 | Exact match | 351 contacts → |
“InfiniVAN Fiber4Business offers premium Fiber Internet plans for your business needs!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Fiberlight, LLCfiberlight.com HQ: Plano, VA, United StatesReported employees: 201-500 | Plano, VA, United States | 201-500 | Exact match | 329 contacts → |
“FiberLight builds and operates mission-critical high-bandwidth networks to ignite our clients' digital transformation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Interouteexainfra.net HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 321 contacts → |
“Interoute is part of EXA Infrastructure, the largest dedicated digital infrastructure platform connecting Europe and North America, and owns kilometres of fibre network across 34…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Gigalinkgigalink.com.br HQ: Nova Friburgo, BrazilReported employees: 201-500 | Nova Friburgo, Brazil | 201-500 | Exact match | 314 contacts → |
“Há 23 anos no mercado, somos a primeira empresa de Internet e Telecomunicações da Região Serrana do Rio de Janeiro e pioneira no uso de Fibra Óptica no Brasil.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Adamo Telecom Iberia S.A.Uadamo.es HQ: Barcelona, SpainReported employees: 51-200 | Barcelona, Spain | 51-200 | Exact match | 306 contacts → |
“Adamo is a telecom operator with Swedish origin operating in Spain since 2007.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | TELYtely.com.br HQ: Joao Pessoa, BrazilReported employees: 201-500 | Joao Pessoa, Brazil | 201-500 | Exact match | 287 contacts → |
“Conectando pessoas desde 2004, a Tely é a maior empresa de telecomunicações do Nordeste.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Ripple Fiberripplefiber.com HQ: Charlotte, NC, United StatesReported employees: 201-500 | Charlotte, NC, United States | 201-500 | Exact match | 274 contacts → |
“Founded in 2021, Ripple Fiber® provides thousands of homes and businesses with brighter, faster fiber internet built for the speed of life.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Xpfibrexpfibre.com HQ: Courbevoie, FranceReported employees: 201-500 | Courbevoie, France | 201-500 | Exact match | 246 contacts → |
“A propos du groupe XpFibre XpFibre est un Opérateur d’Infrastructure spécialisé dans la conception, la construction et l'exploitation de réseaux de fibre optique.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 545 company matches
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Dark fiber operators: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
541 records in the displayed employee bands.
4 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 545 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Dark fiber operators by location
5 lists · largest firstEvery Dark fiber operators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for dark fiber operators?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many dark fiber operators did RevenueBase find worldwide?
The saved snapshot records 545 matching company records, 60,717 tracked contacts and 21,402 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 dark fiber operators worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/dark-fiber-operators.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗