Company lists · Data refreshed October 2026

Top 25 Business telecom services worldwide

Name: Business telecom services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 9, 2026 18,343 companies tracked

RevenueBase identified 18,343 company matches for business telecom services worldwide as of October 2026 and tracks 844,365 professional contacts across them, including 142,696 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for business telecom services 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 October 9, 2026. Country and city lists for business telecom services 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 Oct 9, 2026 How this list was built

18,343Companies

844,365Contacts tracked

142,696Verified emails

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The 25 largest business telecom services worldwide

Ranked by team size

Top 25 of 18,343 company matches for business telecom services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 9, 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	At&t	Exact match	Dallas, TX, United StatesHQ recorded Oct 9, 2026	10001+	157,230 contacts →
	Exact match “We understand that our customers want an easier, less complicated life.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
2	Telefónica	Exact match	Madrid, SpainHQ recorded Oct 9, 2026	10001+	56,541 contacts →
	Exact match “Telefónica is today one of the largest telecommunications companies in the world in terms of market capitalisation and number of customers.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
3	Sprint	Exact match	Overland Park, KS, United StatesHQ recorded Oct 9, 2026	10001+	41,383 contacts →
	Exact match “Thanks for everything!” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
4	Spectrum	Exact match	Stamford, NC, United StatesHQ recorded Oct 9, 2026	10001+	28,375 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 · Oct 9, 2026 · View company records in RevenueBase
5	Telecom Egypt	Exact match	Smart Village, EgyptHQ recorded Oct 9, 2026	10001+	14,006 contacts →
	Exact match “Since its establishment in 1854, Telecom Egypt has played a pivotal role in driving growth within the local ICT market capitalizing on its vast infrastructure, which is one of the…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6	Turkcell	Exact match	Istanbul, TürkiyeHQ recorded Oct 9, 2026	5,001-10,000	13,668 contacts →
	Exact match “Turkcell is a converged telecommunication and technology services provider, founded and headquartered in Türkiye.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7	Verizon Business	Exact match	Basking Ridge, NJ, United StatesHQ recorded Oct 9, 2026	10001+	13,363 contacts →
	Exact match “You’re more than a business, agency or organization leader.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8	Comcast Business	Exact match	Philadelphia, PA, United StatesHQ recorded Oct 9, 2026	10001+	8,598 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
9	Windstream	Exact match	Little Rock, AR, United StatesHQ recorded Oct 9, 2026	10001+	7,474 contacts →
	Exact match “Windstream and Uniti have merged - Please follow us at Uniti Group, Inc.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
10	Vodafone Business	Exact match	London, United KingdomHQ recorded Oct 9, 2026	10001+	6,350 contacts →
	Exact match “Vodafone Business is part of the Vodafone Group.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
11	Cable ONE	Exact match	Phoenix, AZ, United StatesHQ recorded Oct 9, 2026	1,001-5,000	5,785 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 · Oct 9, 2026 · View company records in RevenueBase
12	Claro Argentina	Exact match	Buenos Aires, ArgentinaHQ recorded Oct 9, 2026	1,001-5,000	5,438 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 · Oct 9, 2026 · View company records in RevenueBase
13	Vodafoneziggo	Exact match	Utrecht, NetherlandsHQ recorded Oct 9, 2026	5,001-10,000	5,177 contacts →
	Exact match “VodafoneZiggo is een krachtenbundeling van twee sterke Nederlandse bedrijven.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14	Spark NEW Zealand	Exact match	Cbd, New ZealandHQ recorded Oct 9, 2026	5,001-10,000	4,162 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 · Oct 9, 2026 · View company records in RevenueBase
15	A1 Telekom Austria AG	Exact match	Vienna, AustriaHQ recorded Oct 9, 2026	5,001-10,000	3,849 contacts →
	Exact match “A1 – Internet, Voice, TV and IT-Services from One Source A1 is Austria’s leading communications provider, encompassing more than 5.3 million mobile communications customers and…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16	Wind TRE	Exact match	Milan, ItalyHQ recorded Oct 9, 2026	5,001-10,000	3,834 contacts →
	Exact match “WINDTRE è l’operatore italiano che offre connessioni, energia e prodotti assicurativi*.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17	Omantel	Exact match	Muscat, OmanHQ recorded Oct 9, 2026	1,001-5,000	3,826 contacts →
	Exact match “Omantel is the leading and main provider of integrated telecommunication solutions in Oman.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
18	Telfort	Exact match	Venray, NetherlandsHQ recorded Oct 9, 2026	n/a	3,072 contacts →
	Exact match “Wij zijn Telfort Zakelijk.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
19	Procisa DO Brasil	Exact match	São Paulo, BrazilHQ recorded Oct 9, 2026	1,001-5,000	2,753 contacts →
	Exact match “Prazer, somos a Procisa do Brasil!” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20	Airtel Business	Exact match	Gurgaon, IndiaHQ recorded Oct 9, 2026	10001+	2,747 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 · Oct 9, 2026 · View company records in RevenueBase
21	Starhub	Exact match	SingaporeHQ recorded Oct 9, 2026	1,001-5,000	2,727 contacts →
	Exact match “StarHub is a leading homegrown Singapore company that connects people, businesses and communities to the possibilities of the digital world.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22	Spread Tecnologia	Exact match	Sao Paulo, BrazilHQ recorded Oct 9, 2026	1,001-5,000	2,664 contacts →
	Exact match “With over 30 years of experience in Information and Communication Technology market, the Spread has extensive experience and expertise in the field and has the challenge of…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23	TCS	Exact match	Jefferson City, MO, United StatesHQ recorded Oct 9, 2026	n/a	2,639 contacts →
	Exact match “With In-store media solutions to help you connect with your customers and grow your business, TCS delivers communication solutions that will take your business to the next level.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24	TDS Telecommunications LLC	Exact match	Madison, WI, United StatesHQ recorded Oct 9, 2026	1,001-5,000	2,580 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25	Granite Telecommunications	Exact match	Quincy, MA, United StatesHQ recorded Oct 9, 2026	1,001-5,000	2,346 contacts →
	Exact match “Granite is a dynamic and rapidly growing company serving the exciting and demanding Telecommunications market.” Recorded in the RevenueBase company graph · Oct 9, 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 “business telecom services”. 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 18,343 business telecom services worldwide

See the full list, filter by size, metro and specialty, and access 142,696 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Business telecom services worldwide at a glance

As of Oct 9, 2026

16.9%Verified-email coverage

46.0Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · London

Oct 9, 2026Page data refreshed

Companies by employee count

1-10

7,979

11-50

7,026

51-200

2,156

201-500

564

501-1,000

207

1,001-5,000

227

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 business telecom services are linked below.
What qualifies: Company records worldwide whose business descriptions match “business telecom services” 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 142,696 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 October 9, 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.

Business telecom services by location

92 lists · largest first

Every Business telecom services 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 “business telecom services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many business telecom services are there worldwide?

RevenueBase identified 18,343 company matches for business telecom services worldwide as of October 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?

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

Which country has the most business telecom services?

The United States leads with 4,312 companies, followed by the United Kingdom (1,901) and Brazil (1,515). Every business telecom services list by country and city is linked on this page.

Which city has the most business telecom services?

London leads with 263 company records, followed by Sao Paulo (258) and New York (109).

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 142,696 professional contacts with verified work emails tracked across these 18,343 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 October 9, 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.