Company lists · Data refreshed September 2026

Top 25 B2B telecom agencies worldwide

Name: B2B telecom agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 18,626 companies tracked

RevenueBase identified 18,626 company matches for B2B telecom agencies worldwide as of September 2026 and tracks 687,091 professional contacts across them, including 118,964 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for B2B telecom agencies 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 21, 2026. Country and city lists for B2B telecom agencies 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 21, 2026 How this list was built

18,626Companies

687,091Contacts tracked

118,964Verified emails

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The 25 largest B2B telecom agencies worldwide

Ranked by team size

Top 25 of 18,626 company matches for B2B telecom agencies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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 Sep 21, 2026	10001+	149,412 contacts →
	Exact match “We understand that our customers want an easier, less complicated life.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Telefónica	Exact match	Madrid, SpainHQ recorded Sep 21, 2026	10001+	54,718 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 · Sep 21, 2026 · View company records in RevenueBase
3	Telecom Egypt	Exact match	Smart Village, EgyptHQ recorded Sep 21, 2026	10001+	14,061 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 · Sep 21, 2026 · View company records in RevenueBase
4	Verizon Business	Exact match	Basking Ridge, NJ, United StatesHQ recorded Sep 21, 2026	10001+	12,837 contacts →
	Exact match “You’re more than a business, agency or organization leader.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Turkcell	Exact match	Istanbul, TürkiyeHQ recorded Sep 21, 2026	5,001-10,000	12,790 contacts →
	Exact match “Turkcell is a converged telecommunication and technology services provider, founded and headquartered in Türkiye.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Comcast Business	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 21, 2026	10001+	8,242 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Windstream	Exact match	Little Rock, AR, United StatesHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
8	Vodafone Business	Exact match	London, United KingdomHQ recorded Sep 21, 2026	10001+	6,767 contacts →
	Exact match “Vodafone Business is part of the Vodafone Group.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Cable ONE	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
10	Spark NEW Zealand	Exact match	Cbd, New ZealandHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
11	A1 Telekom Austria AG	Exact match	Vienna, AustriaHQ recorded Sep 21, 2026	5,001-10,000	3,742 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 · Sep 21, 2026 · View company records in RevenueBase
12	Omantel	Exact match	Muscat, OmanHQ recorded Sep 21, 2026	1,001-5,000	3,670 contacts →
	Exact match “Omantel is the leading and main provider of integrated telecommunication solutions in Oman.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Spectrum Business	Exact match	Stamford, CT, United StatesHQ recorded Sep 21, 2026	10001+	3,044 contacts →
	Exact match “Our story starts with understanding that connectivity powers everything you do, and we make it stronger.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Airtel Business	Exact match	Gurgaon, IndiaHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
15	Procisa DO Brasil	Exact match	São Paulo, BrazilHQ recorded Sep 21, 2026	1,001-5,000	2,538 contacts →
	Exact match “Prazer, somos a Procisa do Brasil!” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	Starhub	Exact match	SingaporeHQ recorded Sep 21, 2026	1,001-5,000	2,492 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 · Sep 21, 2026 · View company records in RevenueBase
17	Granite Telecommunications	Exact match	Quincy, MA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,270 contacts →
	Exact match “Granite is a dynamic and rapidly growing company serving the exciting and demanding Telecommunications market.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Claro Guatemala	Exact match	GuatemalaHQ recorded Sep 21, 2026	1,001-5,000	2,102 contacts →
	Exact match “Bienvenido a Claro Guatemala Claro es la empresa líder en brindar soluciones Integrales de calidad en comunicaciones, promoviendo la preferencia de nuestros clientes, generando…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Telecommunications Services Of Trinidad & Tobago Limited Tstt	Exact match	Port Of Spain, Trinidad and TobagoHQ recorded Sep 21, 2026	1,001-5,000	1,847 contacts →
	Exact match “About TSTT: Telecommunications Services of Trinidad and Tobago Limited is jointly owned by National Enterprises Limited (NEL 51%) and Cable & Wireless (West Indies) Limited,(C&W –…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Unifique	Exact match	Timbó, BrazilHQ recorded Sep 21, 2026	1,001-5,000	1,807 contacts →
	Exact match “Somos uma empresa de telecomunicações com 28 anos de atuação.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Liberty Latin America	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	10001+	1,781 contacts →
	Exact match “Liberty Latin America (NASDAQ: LILA and LILAK, OTC Link: LILAB) is a leading telecommunications company operating in over 20 countries across Latin America and the Caribbean under…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Ability Tecnologia E Serviços S A	Exact match	Osasco, BrazilHQ recorded Sep 21, 2026	1,001-5,000	1,733 contacts →
	Exact match “Com mais de funcionários, a Ability Tecnologia e Serviços S.A.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	BEZEQ	Exact match	Tel Aviv-yafo, IsraelHQ recorded Sep 21, 2026	5,001-10,000	1,651 contacts →
	Exact match “Bezeq is Israel's largest and leading telecommunications group.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	ONE NEW Zealand	Exact match	Auckland, New ZealandHQ recorded Sep 21, 2026	1,001-5,000	1,634 contacts →
	Exact match “Need help?” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	GAMMA	Exact match	London, United KingdomHQ recorded Sep 21, 2026	1,001-5,000	1,568 contacts →
	Exact match “Gamma Communications is a leading provider of technology-based communication solutions across Europe.” Recorded in the RevenueBase company graph · Sep 21, 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 “B2B telecom agencies”. 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 18,626 B2B telecom agencies worldwide

See the full list, filter by size, metro and specialty, and access 118,964 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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B2B telecom agencies worldwide at a glance

As of Sep 21, 2026

17.3%Verified-email coverage

36.9Average contacts per company

11-50Median size (employees)

1.6%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

8,223

11-50

7,155

51-200

2,179

201-500

544

501-1,000

188

1,001-5,000

188

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 B2B telecom agencies are linked below.
What qualifies: Company records worldwide whose business descriptions match “B2B telecom agencies” 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 118,964 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 21, 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.

B2B telecom agencies by location

82 lists · largest first

Every B2B telecom agencies 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 “B2B telecom agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many B2B telecom agencies are there worldwide?

RevenueBase identified 18,626 company matches for B2B telecom agencies 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?

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

Which country has the most B2B telecom agencies?

The United States leads with 4,059 companies, followed by the United Kingdom (1,784) and Brazil (1,421). Every B2B telecom agencies list by country and city is linked on this page.

Which city has the most B2B telecom agencies?

London leads with 297 company records, followed by Sao Paulo (266) and New York (110).

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 118,964 professional contacts with verified work emails tracked across these 18,626 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 21, 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.