Company lists · Data refreshed September 2026

Top 25 Telecom companies worldwide

Name: Telecom companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 10,213 companies tracked

RevenueBase identified 10,213 telecom companies worldwide as of September 2026 and tracks 1,689,784 professional contacts across them, including 263,702 with verified work emails and 0 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers telecom 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 16, 2026. Country and city lists for telecom 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

10,213Companies

1,689,784Contacts tracked

263,702Verified emails

0Mobile numbers

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The 25 largest telecom companies worldwide

Ranked by team size

Top 25 of 10,213 telecom companies worldwide, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to telecom companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	At&t	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 16, 2026	10001+	149,412 contacts →
	Indirect evidence “We understand that our customers want an easier, less complicated life.” Source: RevenueBase Database · checked Sep 16, 2026
2	Vodafone	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	10001+	84,459 contacts →
	Indirect evidence “At Vodafone, our purpose is to connect everyone.” Source: RevenueBase Database · checked Sep 16, 2026
3	T-Mobile	Indirect evidence	Bellevue, WA, United StatesHQ checked Sep 16, 2026	10001+	73,993 contacts →
	Indirect evidence “As the supercharged Un-carrier, T-Mobile US, Inc.(NASDAQ: TMUS) is powered by an award-winning 5G network that connects more people, in more places, than ever before.” Source: RevenueBase Database · checked Sep 16, 2026
4	Orange	Strong evidence	Issy-les-moulineaux, FranceHQ checked Sep 16, 2026	10001+	71,767 contacts →
	Strong evidence “Orange is one of the world’s leading telecommunications operators with revenues of 40.3 billion euros in 2024 and employees worldwide at 31 December 2024, including employees in…” Source: RevenueBase Database · checked Sep 16, 2026
5	Airtel	Indirect evidence	Gurgaon, IndiaHQ checked Sep 16, 2026	10001+	67,946 contacts →
	Indirect evidence “Airtel was founded to provide global connectivity and unlock endless opportunities.” Source: RevenueBase Database · checked Sep 16, 2026
6	Telefónica	Strong evidence	Madrid, SpainHQ checked Sep 16, 2026	10001+	54,718 contacts →
	Strong evidence “Telefónica is today one of the largest telecommunications companies in the world in terms of market capitalisation and number of customers.” Source: RevenueBase Database · checked Sep 16, 2026
7	Telstra	Indirect evidence	Sydney, AustraliaHQ checked Sep 16, 2026	10001+	31,885 contacts →
	Indirect evidence “We believe it’s people who give purpose to our technology.” Source: RevenueBase Database · checked Sep 16, 2026
8	Charter Communications	Indirect evidence	Stamford, CT, United StatesHQ checked Sep 16, 2026	10001+	30,997 contacts →
	Indirect evidence “For company news and job opportunities, please follow us at: Spectrum is powered and innovated by Charter Communications.” Source: RevenueBase Database · checked Sep 16, 2026
9	Claro Brasil	Indirect evidence	São Paulo, BrazilHQ checked Sep 16, 2026	10001+	30,465 contacts →
	Indirect evidence “Prazer, somos a Claro!” Source: RevenueBase Database · checked Sep 16, 2026
10	Vivo Telefônica Brasil	Indirect evidence	São Paulo, BrazilHQ checked Sep 16, 2026	10001+	29,859 contacts →
	Indirect evidence “Vivo (Telefônica Brasil) is part of the Telefónica Group and with more than 94 million customers, of which 75 million mobile and 19 million fixed, we are the largest…” Source: RevenueBase Database · checked Sep 16, 2026
11	SKY	Indirect evidence	Middlesex, United KingdomHQ checked Sep 16, 2026	10001+	26,533 contacts →
	Indirect evidence “Sky connects and entertains millions of people across Europe.” Source: RevenueBase Database · checked Sep 16, 2026
12	E& UAE	Indirect evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 16, 2026	10001+	24,168 contacts →
	Indirect evidence “Formerly etisalat UAE) For more than four decades, we have connected people and now we’ve evolved to become the digital telco of the future.” Source: RevenueBase Database · checked Sep 16, 2026
13	Telenor	Strong evidence	Fornebu, NorwayHQ checked Sep 16, 2026	10001+	19,708 contacts →
	Strong evidence “Telenor Group is a leading telecommunications and technology company in the Nordics and Asia, serving over 200 million customers and generating annual revenues of around NOK 80…” Source: RevenueBase Database · checked Sep 16, 2026
14	TIM	Indirect evidence	Milano, ItalyHQ checked Sep 16, 2026	10001+	19,263 contacts →
	Indirect evidence “We are driving the digital transition of Italy and Brazil with innovative technologies and services because we want to contribute to accelerating the sustainable growth of the…” Source: RevenueBase Database · checked Sep 16, 2026
15	Telkomsel	Indirect evidence	Jakarta Selatan, IndonesiaHQ checked Sep 16, 2026	5,001-10,000	14,605 contacts →
	Indirect evidence “Connecting Nation.” Source: RevenueBase Database · checked Sep 16, 2026
16	Telkom	Indirect evidence	Centurion, South AfricaHQ checked Sep 16, 2026	10001+	13,574 contacts →
	Indirect evidence “Connect with Mzansi’s Best* Value Network as we enable everyday ambitions.#TelkomIsIconic #PossibleBeginsHere To learn more about Telkom, visit:” Source: RevenueBase Database · checked Sep 16, 2026
17	TELIA	Indirect evidence	Solna, SwedenHQ checked Sep 16, 2026	10001+	13,021 contacts →
	Indirect evidence “Our 15 talented colleagues serve millions of customers every day in one of the world’s most connected regions.” Source: RevenueBase Database · checked Sep 16, 2026
18	Turkcell	Strong evidence	Istanbul, TürkiyeHQ checked Sep 16, 2026	5,001-10,000	12,790 contacts →
	Strong evidence “Turkcell is a converged telecommunication and technology services provider, founded and headquartered in Türkiye.” Source: RevenueBase Database · checked Sep 16, 2026
19	Globe Telecom	Strong evidence	Taguig City National, PhilippinesHQ checked Sep 16, 2026	5,001-10,000	12,676 contacts →
	Strong evidence “Globe is a leading full-service telecommunications company in the Philippines and publicly listed in the PSE with the stock symbol GLO.” Source: RevenueBase Database · checked Sep 16, 2026
20	Telcel	Indirect evidence	Granada, MexicoHQ checked Sep 16, 2026	10001+	11,505 contacts →
	Indirect evidence “Telcel (Radiomóvil Dipsa) es subsidiaria de América Móvil, uno de los mayores proveedores de comunicaciones celulares de Latinoamérica, grupo líder con inversiones en…” Source: RevenueBase Database · checked Sep 16, 2026
21	ENTEL	Indirect evidence	Santiago, ChileHQ checked Sep 16, 2026	1,001-5,000	10,668 contacts →
	Indirect evidence “Desde el origen en 1964, uno de nuestros motores para avanzar y evolucionar ha sido el querer ser un aporte para el desarrollo futuro de las personas, las empresas y la sociedad.” Source: RevenueBase Database · checked Sep 16, 2026
22	JAZZ	Indirect evidence	Islamabad, PakistanHQ checked Sep 16, 2026	1,001-5,000	10,623 contacts →
	Indirect evidence “Pakistan’s number one digital operator and the largest internet and broadband service provider with over 70 million subscribers nationwide.” Source: RevenueBase Database · checked Sep 16, 2026
23	Telecom Argentina	Strong evidence	Ciudad, ArgentinaHQ checked Sep 16, 2026	10001+	10,572 contacts →
	Strong evidence “We are Telecom Argentina, a connectivity solutions and entertainment company with over collaborators throughout the country.” Source: RevenueBase Database · checked Sep 16, 2026
24	SFR	Strong evidence	Paris, FranceHQ checked Sep 16, 2026	5,001-10,000	9,922 contacts →
	Strong evidence “SFR is the number one alternative telecoms operator in France.” Source: RevenueBase Database · checked Sep 16, 2026
25	Claro Colombia	Strong evidence	Bogotá, ColombiaHQ checked Sep 16, 2026	10001+	9,652 contacts →
	Strong evidence “Claro Telecomunicaciones móviles y Claro Telecomunicaciones fijas.” Source: RevenueBase Database · checked Sep 16, 2026

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: telecom 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 telecom companies.
Partial evidence: Its own public description names part of telecom companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecom 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 10,213 telecom companies worldwide

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Telecom companies worldwide at a glance

As of Sep 16, 2026

15.6%Verified-email coverage

165.5Average contacts per company

11-50Median size (employees)

2.2%Largest-city concentration · Sao Paulo

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

3,635

11-50

3,710

51-200

1,633

201-500

572

501-1,000

191

1,001-5,000

258

5,001-10,000

10001+

116

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 telecom 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: 43 countries, largest first: the United States, Brazil, the United Kingdom, Spain, India, Italy, France, Germany, Canada, Australia and 33 more. Country and city lists for telecom companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “telecom 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 telecom 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 telecom 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, 263,702 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 16, 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.

Telecom companies by location

52 lists · largest first

Every Telecom 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 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 telecom 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 telecom companies are there worldwide?

RevenueBase identified 10,213 telecom 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?

At&t, headquartered in Dallas, tops this list with the largest team on record.

Which country has the most telecom companies?

The United States leads with 1,830 companies, followed by Brazil (1,599) and the United Kingdom (813). Every telecom companies list by country and city is linked on this page.

Which city has the most telecom companies?

Sao Paulo leads with 222 headquartered companies, followed by London (130) and Madrid (94).

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 263,702 verified decision-maker contacts tracked across these 10,213 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 16, 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.