Company lists · Data refreshed September 2026

Top 25 Fiber optic telecommunications companies worldwide

Name: Fiber optic telecommunications companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 12,215 companies tracked

RevenueBase identified 12,215 company matches for fiber optic telecommunications companies worldwide as of September 2026 and tracks 647,119 professional contacts across them, including 122,607 with verified work emails. Brazil is the largest market and Sao Paulo the largest hub.

This list covers company matches for fiber optic telecommunications companies 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 September 30, 2026. Country and city lists for fiber optic telecommunications companies 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 30, 2026 How this list was built

12,215Companies

647,119Contacts tracked

122,607Verified emails

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The 25 largest fiber optic telecommunications companies worldwide

Ranked by team size

Top 25 of 12,215 company matches for fiber optic telecommunications companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 30, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Spectrum	Exact match	Stamford, NC, United StatesHQ recorded Sep 30, 2026	10001+	26,596 contacts →
	Exact match “Spectrum is a suite of advanced communications services offered by Charter Communications, Inc.(NASDAQ:CHTR), a leading broadband connectivity company available to more than 57…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
2	Centurylink	Exact match	Monroe, LA, United StatesHQ recorded Sep 30, 2026	10001+	22,745 contacts →
	Exact match “CenturyLink (NYSE: CTL) is a technology leader delivering hybrid networking, cloud connectivity, and security solutions to customers around the world.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
3	Lumen Technologies	Exact match	Monroe, LA, United StatesHQ recorded Sep 30, 2026	10001+	15,336 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 · Sep 30, 2026 · View company records in RevenueBase
4	OI	Exact match	Rio De Janeiro, BrazilHQ recorded Sep 30, 2026	10001+	13,575 contacts →
	Exact match “Aqui na Oi, trabalhamos para criar novos futuros e levar a vida digital para todos.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
5	TELIA	Exact match	Solna, SwedenHQ recorded Sep 30, 2026	10001+	13,021 contacts →
	Exact match “Our 15 talented colleagues serve millions of customers every day in one of the world’s most connected regions.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
6	Verizon Business	Exact match	Basking Ridge, NJ, United StatesHQ recorded Sep 30, 2026	10001+	12,837 contacts →
	Exact match “You’re more than a business, agency or organization leader.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
7	Frontier Internet	Exact match	Dallas, TX, United StatesHQ recorded Sep 30, 2026	10001+	11,368 contacts →
	Exact match “Frontier, a Verizon company, is one of the largest fiber providers in the U.S.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
8	Earthlink	Exact match	Sandy Springs, United StatesHQ recorded Sep 30, 2026	n/a	10,818 contacts →
	Exact match “EarthLink is a top U.S.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
9	Mobily	Exact match	Riyadh, Saudi ArabiaHQ recorded Sep 30, 2026	1,001-5,000	7,585 contacts →
	Exact match “Etihad Etisalat (Mobily) is a Saudi company launched commercially in May 2005.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
10	Windstream	Exact match	Little Rock, AR, United StatesHQ recorded Sep 30, 2026	10001+	7,275 contacts →
	Exact match “Windstream and Uniti have merged - Please follow us at Uniti Group, Inc.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
11	Virgin Media	Exact match	Reading, United KingdomHQ recorded Sep 30, 2026	10001+	6,839 contacts →
	Exact match “We’re in the process of growing all parts of our business so we can connect more customers to the things and to the people they care about.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
12	Cable ONE	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 30, 2026	1,001-5,000	6,379 contacts →
	Exact match “Cable One Business offers scalable, reliable, and efficient solutions so that the businesses we serve can be successful.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
13	Izzi Telecom	Exact match	Mexico City, MexicoHQ recorded Sep 30, 2026	10001+	5,506 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
14	STL	Exact match	Pune, IndiaHQ recorded Sep 30, 2026	1,001-5,000	5,391 contacts →
	Exact match “STL is a global leader in advanced connectivity solutions, providing end-to-end solutions for building AI-ready infrastructure, FTTx, Rural, Enterprise and Data Centre networks.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
15	Claro Argentina	Exact match	Buenos Aires, ArgentinaHQ recorded Sep 30, 2026	1,001-5,000	5,204 contacts →
	Exact match “Te damos la Bienvenida a Claro Argentina Somos parte de América Móvil, uno de los grupos de telecomunicaciones más importantes a nivel mundial, con presencia en países de América…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
16	Fiberhome	Exact match	Wuhan, ChinaHQ recorded Sep 30, 2026	10001+	4,327 contacts →
	Exact match “FiberHome is an internationally renowned provider of ICT network products and solutions, Our mission is to maximize the potential of digital connections and benefit the society.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
17	Shaw Communications	Exact match	Calgary, AB, CanadaHQ recorded Sep 30, 2026	10001+	4,209 contacts →
	Exact match “Shaw and Rogers have come together to continue expanding connectivity, supporting local communities and bringing you the latest 5G and fibre network technology.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
18	Spark NEW Zealand	Exact match	Cbd, New ZealandHQ recorded Sep 30, 2026	5,001-10,000	4,023 contacts →
	Exact match “In today’s fast-paced digital world, Spark is here to help all New Zealanders stay ahead.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
19	ACT Fibernet	Exact match	Bangalore, IndiaHQ recorded Sep 30, 2026	5,001-10,000	3,876 contacts →
	Exact match “ACT (Atria Convergence Technologies Ltd.) was born out of a vision to become the most admired in-home entertainment, education, and interactive services provider in India, back in…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
20	WOM Chile	Exact match	Santiago, ChileHQ recorded Sep 30, 2026	1,001-5,000	3,389 contacts →
	Exact match “WOM es una compañía de telecomunicaciones que ofrece servicios móviles y de fibra óptica.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
21	Chunghwa Telecom	Exact match	TaiwanHQ recorded Sep 30, 2026	10001+	3,294 contacts →
	Exact match “Voice wholesale” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
22	Zayo Group	Exact match	Denver, CO, United StatesHQ recorded Sep 30, 2026	5,001-10,000	2,948 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 · Sep 30, 2026 · View company records in RevenueBase
23	AFL	Exact match	Duncan, SC, United StatesHQ recorded Sep 30, 2026	1,001-5,000	2,813 contacts →
	Exact match “Founded in 1984, AFL is a global manufacturer providing end-to-end solutions to the energy, broadband, data center, AI and industrial markets.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
24	Airtel Business	Exact match	Gurgaon, IndiaHQ recorded Sep 30, 2026	10001+	2,760 contacts →
	Exact match “The B2B arm of Bharti Airtel, we are India's leading provider of secure and reliable connectivity, technology, and communications solutions.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
25	Digi Spain Telecom	Exact match	Alcobendas, SpainHQ recorded Sep 30, 2026	10001+	2,658 contacts →
	Exact match “DIGI es una empresa que pertenece a la multinacional DIGI Communications, con 30 años de experiencia en el sector de las telecomunicaciones y presente en España desde 2008 donde…” Recorded in the RevenueBase company graph · Sep 30, 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 “fiber optic telecommunications companies”. 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 12,215 fiber optic telecommunications companies worldwide

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Fiber optic telecommunications companies worldwide at a glance

As of Sep 30, 2026

18.9%Verified-email coverage

53.0Average contacts per company

11-50Median size (employees)

1.2%Largest-city concentration · Sao Paulo

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

4,059

11-50

4,322

51-200

2,370

201-500

755

501-1,000

264

1,001-5,000

242

5,001-10,000

10001+

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 fiber optic telecommunications companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “fiber optic telecommunications companies” 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 122,607 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 September 30, 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.

Fiber optic telecommunications companies by location

50 lists · largest first

Every Fiber optic telecommunications companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “fiber optic telecommunications companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many fiber optic telecommunications companies are there worldwide?

RevenueBase identified 12,215 company matches for fiber optic telecommunications companies worldwide as of September 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?

Spectrum tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most fiber optic telecommunications companies?

Brazil leads with 2,582 companies, followed by the United States (2,180) and India (450). Every fiber optic telecommunications companies list by country and city is linked on this page.

Which city has the most fiber optic telecommunications companies?

Sao Paulo leads with 148 company records, followed by Shenzhen (128) and Rio De Janeiro (67).

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 122,607 professional contacts with verified work emails tracked across these 12,215 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 September 30, 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 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.