Company lists · Data refreshed September 2026
Top 25 Internet service providers worldwide
RevenueBase identified 7,552 internet service providers worldwide as of September 2026 and tracks 450,601 professional contacts across them, including 83,996 with verified work emails and 88,406 with mobile numbers. Brazil is the largest market and Sao Paulo the largest hub.
This list covers internet service providers 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 6, 2026. Country and city lists for internet service providers 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 internet service providers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 26,596 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 22,745 contacts → | ||||
Indirect evidence “CenturyLink (NYSE: CTL) is a technology leader delivering hybrid networking, cloud connectivity, and security solutions to customers around the world.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 15,194 contacts → | ||||
Indirect evidence “Cox Communications is committed to creating more moments of real human connection.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 12,837 contacts → | ||||
Indirect evidence “You’re more than a business, agency or organization leader.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 11,368 contacts → | ||||
Indirect evidence “Frontier, a Verizon company, is one of the largest fiber providers in the U.S.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 10,818 contacts → | ||||
Indirect evidence “EarthLink is a top U.S.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 7,275 contacts → | ||||
Indirect evidence “Windstream and Uniti have merged - Please follow us at Uniti Group, Inc.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 6,839 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | 6,379 contacts → | ||||
Indirect evidence “Cable One Business offers scalable, reliable, and efficient solutions so that the businesses we serve can be successful.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 5,506 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 5,204 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | 4,835 contacts → | ||||
Strong evidence “Chello is the brand of internet service provider-activities of Liberty Global Europe (formerly UGC), a provider of broadband internet access via cable in Europe, with estimated…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 4,209 contacts → | ||||
Indirect evidence “Shaw and Rogers have come together to continue expanding connectivity, supporting local communities and bringing you the latest 5G and fibre network technology.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4,023 contacts → | ||||
Indirect evidence “In today’s fast-paced digital world, Spark is here to help all New Zealanders stay ahead.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 3,876 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 3,850 contacts → | ||||
Indirect evidence “WINDTRE è l’operatore italiano che offre connessioni, energia e prodotti assicurativi*.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 2,760 contacts → | ||||
Indirect evidence “The B2B arm of Bharti Airtel, we are India's leading provider of secure and reliable connectivity, technology, and communications solutions.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 2,658 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | 2,459 contacts → | ||||
Indirect evidence “Hughes Network Systems, LLC (HUGHES), an innovator in satellite and multi-transport technologies and networks since 1971, provides broadband equipment and services; managed…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2,450 contacts → | ||||
Strong evidence “Cogent is one of the world's largest Internet Service Providers, delivering high quality Internet, Ethernet, Transport, and Colocation services to more than 138,025 Enterprise and…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2,431 contacts → | ||||
Indirect evidence “Converge ICT Solutions, Inc.(PSE: CNVRG) is the fastest-growing broadband service and technology provider in the Philippines.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2,419 contacts → | ||||
Strong evidence “TDS Telecommunications LLC (TDS Telecom/TDS®) delivers high-speed internet, TV entertainment, and phone services to a mix of small to mid-sized urban, suburban and rural…” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2,354 contacts → | ||||
Indirect evidence “A Desktop é uma empresa de telecomunicação comprometida em conectar você ao futuro com velocidade, estabilidade e inovação!” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2,240 contacts → | ||||
Indirect evidence “Tikona Infinet Private Limited(TI PL) is engaged in building the next generation wireless broadband services for home and enterprise customers in India.” Source: RevenueBase Database · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2,069 contacts → | ||||
Strong evidence “We’re Brightspeed, a fiber internet provider on a mission to bring more connectivity to America.” Source: RevenueBase Database · checked Sep 6, 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: internet service providers. 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 internet service providers.
- Partial evidence
- Its own public description names part of internet service providers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name internet service providers. 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 7,552 internet service providers worldwide
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Internet service providers worldwide at a glance
As of Sep 6, 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 internet service providers, 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
- 29 countries, largest first: Brazil, the United States, India, the United Kingdom, South Africa, Spain, Italy, Canada, Germany, France and 19 more. Country and city lists for internet service providers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “internet service providers”. 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 internet service providers), 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 internet service providers, 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, 83,996 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 between September 6, 2026 and September 15, 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.
Internet service providers by location
33 lists · largest firstEvery Internet service providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Internet service providers based in Brazil2,541
- Internet service providers based in the United States1,439
- Internet service providers based in India491
- Internet service providers based in the United Kingdom357
- Internet service providers based in South Africa264
- Internet service providers based in Spain251
- Internet service providers based in Italy226
- Internet service providers based in Canada202
- Internet service providers based in Germany185
- Internet service providers based in France169
- Internet service providers based in Indonesia156
- Internet service providers based in Argentina130
- Internet service providers based in Poland129
- Internet service providers based in Australia123
- Internet service providers based in the Netherlands112
- Internet service providers based in Bangladesh107
- Internet service providers based in Mexico87
- Internet service providers based in Türkiye86
- Internet service providers based in Nigeria81
- Internet service providers based in Colombia61
- Internet service providers based in Kenya54
- Internet service providers based in Sweden48
- Internet service providers based in Ecuador45
- Internet service providers based in the Philippines39
- Internet service providers based in Switzerland37
- Internet service providers based in New Zealand35
- Internet service providers based in Norway35
- Internet service providers based in Venezuela33
- Internet service providers based in Ireland29
Cities
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 internet service providers, 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 internet service providers are there worldwide?
RevenueBase identified 7,552 internet service providers 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?
Spectrum, headquartered in Charlotte, tops this list with the largest team on record.
Which country has the most internet service providers?
Brazil leads with 2,541 companies, followed by the United States (1,439) and India (491). Every internet service providers list by country and city is linked on this page.
Which city has the most internet service providers?
Sao Paulo leads with 127 headquartered companies, followed by Rio De Janeiro (66) and Dhaka (60).
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 83,996 verified decision-maker contacts tracked across these 7,552 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 6, 2026 and September 15, 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.