Company lists · Data refreshed September 2026
Top 25 Underground fiber optic contractors worldwide
RevenueBase identified 2,030 underground fiber optic contractors worldwide as of September 2026 and tracks 31,682 professional contacts across them, including 8,308 with verified work emails and 0 with mobile numbers. The United States is the largest market and Houston the largest hub.
This list covers underground fiber optic contractors 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 19, 2026. Country and city lists for underground fiber optic contractors 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 contractors worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,676 contacts → | ||||
Indirect evidence “Congruex was formed in 2017 to take advantage of historic demand for digital connectivity.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,186 contacts → | ||||
Indirect evidence “Shentel has been keeping communities connected since 1902.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 620 contacts → | ||||
Partial evidence “TAK Broadband is a nationwide fiber broadband construction partner operating across the U.S.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 552 contacts → | ||||
Strong evidence “As one of the nations largest underground specialty contractors, InfraSource has over employees strategically positioned across more than 20 operating centers.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 396 contacts → | ||||
Indirect 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 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 339 contacts → | ||||
Indirect 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 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 322 contacts → | ||||
Indirect evidence “MP Nexlevel provides Communications, Power, Gas and Network Providers with construction and technical services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 292 contacts → | ||||
Partial evidence “TelCom is a specialized contractor providing construction and maintenance services to telecommunications providers throughout the United States.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 266 contacts → | ||||
Strong evidence “Arizona Pipeline Company (APC) is a leading underground utility contractor, delivering critical infrastructure with a commitment to safety, quality, and long-term performance.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 240 contacts → | ||||
Strong evidence “Draftech International is a full-service telecom engineering and outside plant (OSP) solutions provider, delivering end-to-end fiber optic design, FTTH engineering, and broadband…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 238 contacts → | ||||
Indirect evidence “FPL FiberNet is now part of Zayo Group.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 221 contacts → | ||||
Indirect evidence “Established more than fifty years ago in the town of Rocky Mount, North Carolina, Lambert's was perfectly poised to become a leading contributor to the growth of the East Coast.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 218 contacts → | ||||
Indirect evidence “A INFOLINK TELECOM é uma empresa especializada em produtos e serviços de comunicação e tecnologia, presente no mercado desde 2004 com DNA de servir com qualidade e excelência…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 206 contacts → | ||||
Indirect evidence “Founded by two Tennessee state senators, Star Construction, LLC has been a key service partner to many of the nation's largest telecommunications providers for over half a century.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 162 contacts → | ||||
Indirect evidence “Founded in 1984, our headquarters is located in Tampa, Florida.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 158 contacts → | ||||
Indirect evidence “Viberoptix delivers frontline services to fibre networks providers across the UK and Ireland.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 155 contacts → | ||||
Indirect evidence “Pauley is known as a leader in providing infrastructure solutions for the broadband, telecommunications, CATV, and electrical industries.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 150 contacts → | ||||
Indirect evidence “IT International Telecom, Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 148 contacts → | ||||
Indirect evidence “APK Telecom Network Solutions (ATN), in 2016 overgenomen door APK Group focust zich op glasvezel, datacenters, camera's & alarmen.” Source: RevenueBase Database · checked Sep 19, 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 contractors. 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 contractors.
- Partial evidence
- Its own public description names part of underground fiber optic contractors, 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 contractors. 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 2,030 underground fiber optic contractors worldwide
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Underground fiber optic contractors worldwide at a glance
As of Sep 19, 2026Companies by employee count
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 contractors, 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
- 12 countries, largest first: the United States, Germany, the United Kingdom, France, Canada, Brazil, the Netherlands, Australia, South Africa, Belgium and 2 more. Country and city lists for underground fiber optic contractors are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “underground fiber optic contractors”. 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 contractors), 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 contractors, 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, 8,308 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 19, 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 contractors by location
12 lists · largest firstEvery Underground fiber optic contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Underground fiber optic contractors based in the United States947
- Underground fiber optic contractors based in Germany211
- Underground fiber optic contractors based in the United Kingdom197
- Underground fiber optic contractors based in France140
- Underground fiber optic contractors based in Canada126
- Underground fiber optic contractors based in Brazil108
- Underground fiber optic contractors based in the Netherlands107
- Underground fiber optic contractors based in Australia64
- Underground fiber optic contractors based in South Africa38
- Underground fiber optic contractors based in Belgium33
- Underground fiber optic contractors based in Sweden31
- Underground fiber optic contractors based in Switzerland28
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 contractors, 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 contractors are there worldwide?
RevenueBase identified 2,030 underground fiber optic contractors 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?
Congruex, headquartered in Boulder, tops this list with the largest team on record.
Which country has the most underground fiber optic contractors?
The United States leads with 947 companies, followed by Germany (211) and the United Kingdom (197). Every underground fiber optic contractors list by country and city is linked on this page.
Which city has the most underground fiber optic contractors?
Houston leads with 20 headquartered companies, followed by London (17) and Orlando (14).
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 8,308 verified decision-maker contacts tracked across these 2,030 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 19, 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.