Company lists · Data refreshed September 2026
Top 25 Underground fiber optic cable companies worldwide
RevenueBase identified 3,551 underground fiber optic cable companies worldwide as of September 2026 and tracks 56,106 professional contacts across them, including 15,848 with verified work emails. The United States is the largest market and London the largest hub.
This list covers underground fiber optic cable companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026. Country and city lists for underground fiber optic cable companies follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 underground fiber optic cable companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,813 contacts → | ||||
Indirect evidence “Founded in 1984, AFL is a global manufacturer providing end-to-end solutions to the energy, broadband, data center, AI and industrial markets.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,938 contacts → | ||||
Partial evidence “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.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,676 contacts → | ||||
Indirect evidence “Congruex was formed in 2017 to take advantage of historic demand for digital connectivity.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,420 contacts → | ||||
Strong evidence “Hotwire Communications is a national leader in fiber optic technology, delivering advanced, customized telecommunications solutions to residential, commercial, senior-living…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,247 contacts → | ||||
Partial evidence “Uniti is a premier insurgent fiber provider dedicated to enabling mission-critical connectivity across the United States.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,186 contacts → | ||||
Indirect evidence “Shentel has been keeping communities connected since 1902.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,185 contacts → | ||||
Strong evidence “SubCom engineers, manufactures, and installs subsea fiber optic data cables - the unsung heroes of global communication.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 950 contacts → | ||||
Strong evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 717 contacts → | ||||
Strong evidence “Lumos delivers 100% Fiber Optic Internet and Whole-Home Wi-Fi to a growing network of homes, businesses and multi-family buildings throughout the Midwest and Eastern US.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 708 contacts → | ||||
Partial evidence “Under National Telecommunication Transmission Network (NTTN) license, issued by Bangladesh Telecommunication Regulatory Commission (BTRC), Fiber@Home is developing a completely…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 662 contacts → | ||||
Indirect evidence “Born from a long, rich and proven history of serving communities through innovation and transformation, we are now taking our impact to another level to be even more for the…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 628 contacts → | ||||
Indirect evidence “ADB is an industry-leading infrastructure solutions provider, proudly building networks, connections, and partnerships nationwide within the telecommunications and utility…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 490 contacts → | ||||
Partial evidence “Vyve Broadband provides reliable, secure, and affordable cable television, phone, and internet services with speeds up to 1 Gig for residential and 10 Gig for business over an…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 443 contacts → | ||||
Indirect evidence “Als führender Glasfaseranbieter Bayerns verbindet M-net seit 1996 Menschen und Unternehmen in Bayern, im Großraum Ulm und im hessischen Main-Kinzig-Kreis mit zuverlässiger…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 426 contacts → | ||||
Indirect evidence “Prince Telecom, LLC ("Prince") is a major fulfillment provider to the telecommunications industry.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 396 contacts → | ||||
Partial evidence “TCS Communications, LLC, was founded in 1978 with the focus of providing quality construction services to the Cable Industry.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 361 contacts → | ||||
Indirect evidence “A VIP TELECOM é uma marca que faz parte do Grupo Alloha Fibra, a maior empresa independente de fibra Óptica no Brasil.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 339 contacts → | ||||
Partial evidence “Global Marine is part of the Global Marine Group, and is a market leader in subsea cable installation and maintenance solutions to the telecoms and oil & gas sectors.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 337 contacts → | ||||
Strong evidence “with (-) Established on January 10, 2007, PGNCOM is a prominent provider of high-capacity fiber optic networks.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 322 contacts → | ||||
Indirect evidence “MP Nexlevel provides Communications, Power, Gas and Network Providers with construction and technical services.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 299 contacts → | ||||
Indirect evidence “FiberLight builds and operates mission-critical high-bandwidth networks to ignite our clients' digital transformation.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 292 contacts → | ||||
Indirect evidence “TelCom is a specialized contractor providing construction and maintenance services to telecommunications providers throughout the United States.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 290 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 260 contacts → | ||||
Indirect evidence “In the past few years, the world has realized the importance of high-speed internet service and “being connected.” Most agree that connectivity is as vital as electricity and…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 260 contacts → | ||||
Partial evidence “InfiniVAN Fiber4Business offers premium Fiber Internet plans for your business needs!” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: underground fiber optic cable companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names underground fiber optic cable companies.
- Partial evidence
- Its own public description names part of underground fiber optic cable companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name underground fiber optic cable companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 3,551 underground fiber optic cable companies worldwide
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Underground fiber optic cable companies worldwide at a glance
As of Sep 22, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among underground fiber optic cable companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for underground fiber optic cable companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “underground fiber optic cable companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names underground fiber optic cable companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among underground fiber optic cable companies, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 15,848 across the full list. 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 September 22, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Underground fiber optic cable companies by location
14 lists · largest firstEvery Underground fiber optic cable companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Underground fiber optic cable companies based in the United States931
- Underground fiber optic cable companies based in the United Kingdom295
- Underground fiber optic cable companies based in Germany244
- Underground fiber optic cable companies based in Brazil207
- Underground fiber optic cable companies based in France192
- Underground fiber optic cable companies based in Canada148
- Underground fiber optic cable companies based in the Netherlands116
- Underground fiber optic cable companies based in Australia66
- Underground fiber optic cable companies based in Italy55
- Underground fiber optic cable companies based in Spain54
- Underground fiber optic cable companies based in South Africa52
- Underground fiber optic cable companies based in Switzerland39
- Underground fiber optic cable companies based in Sweden34
- Underground fiber optic cable companies based in Belgium33
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names underground fiber optic cable companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many underground fiber optic cable companies are there worldwide?
RevenueBase identified 3,551 underground fiber optic cable companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
AFL, headquartered in Duncan, tops this list with the largest team on record.
Which country has the most underground fiber optic cable companies?
The United States leads with 931 companies, followed by the United Kingdom (295) and Germany (244). Every underground fiber optic cable companies list by country and city is linked on this page.
Which city has the most underground fiber optic cable companies?
London leads with 30 headquartered companies, followed by Sao Paulo (25) and Houston (23).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 15,848 verified decision-maker contacts tracked across these 3,551 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 2026.
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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 Smart Search, 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.