Company lists · Data refreshed September 2026

Top 25 B2B telemarketing firms worldwide

RevenueBase identified 8,355 company matches for B2B telemarketing firms worldwide as of September 2026 and tracks 86,561 professional contacts across them, including 8,284 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers company matches for B2B telemarketing firms 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 27, 2026. Country and city lists for B2B telemarketing firms 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 27, 2026 How this list was built
8,355Companies
86,561Contacts tracked
8,284Verified emails
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The 25 largest B2B telemarketing firms worldwide

Ranked by team size
Top 25 of 8,355 company matches for B2B telemarketing firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchParis, FranceHQ recorded Sep 27, 202610001+1,795 contacts →

Exact match

“The Concentrix B2B sales practice is here to design, build and run projects for our clients.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2Exact matchNew York, NY, United StatesHQ recorded Sep 27, 2026501-1,000740 contacts →

Exact match

“Data Driven.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3Exact matchRedwood City, CA, United StatesHQ recorded Sep 27, 2026n/a708 contacts →

Exact match

“Salesify, a leading provider of B2B demand generation services, helps our clients create pipeline and accelerate revenue by identifying, profiling, nurturing and connecting with…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4Exact matchLas Vegas, NV, United StatesHQ recorded Sep 27, 2026201-500697 contacts →

Exact match

“Flexisales, is a global frontrunner in B2B Lead & Demand Generation and Data Services, serving technology companies & agencies worldwide.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5Exact matchJaipur, IndiaHQ recorded Sep 27, 2026501-1,000649 contacts →

Exact match

“We at Girnar Care work towards customer satisfaction and it is also a center of customer excellence.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6Exact matchAthens, GA, IndiaHQ recorded Sep 27, 2026201-500553 contacts →

Exact match

“From initial market awareness to the final stages of a complex B2B buying journey, modern buyers crave authentic interaction.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7Exact matchSterling Heights, MI, United StatesHQ recorded Sep 27, 202651-200528 contacts →

Exact match

“movingDneedle is a Business to Business Sales Lead Generation Company that provides fast and scalable, sales qualified leads through its unique Personalized Email Marketing…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8Exact matchSan Francisco, CA, United StatesHQ recorded Sep 27, 2026501-1,000478 contacts →

Exact match

“About DemandShore Since 2004, we’ve been working hard to deliver value to Sales & Marketing professionals across B2B Technology companies globally.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9Exact matchDenver, CO, United StatesHQ recorded Sep 27, 202651-200455 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10Exact matchBrighton, United KingdomHQ recorded Sep 27, 202651-200440 contacts →

Exact match

“We are an award winning multilingual lead generation and market research service provider for B2B publishing, marketing, events and tech companies.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11Exact matchHurst, TX, United StatesHQ recorded Sep 27, 202651-200428 contacts →

Exact match

“Alliance is a domestically operated, internationally recognized professional contact center specializing in lead generation and appointment setting.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12Exact matchFort Worth, TX, United StatesHQ recorded Sep 27, 2026501-1,000393 contacts →

Exact match

“Touchstone Communications was built in 2002 on the philosophy of hiring educated, motivated talent and then providing them with the best training and management to achieve our…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13Exact matchSan Jose, CA, United StatesHQ recorded Sep 27, 2026201-500391 contacts →

Exact match

“aMarketForce is a full-scale B2B Contact Database & Demand Generation services company.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14Exact matchNagpur, IndiaHQ recorded Sep 27, 202651-200387 contacts →

Exact match

“TLM empowers businesses to generate revenue through their qualified leads.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15Exact matchSimi Valley, CA, United StatesHQ recorded Sep 27, 2026201-500380 contacts →

Exact match

“Beyond Codes is a global B2B lead generation and appointment-setting agency trusted by some of the world's leading technology companies to build enterprise sales pipeline.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16Exact matchPhiladelphia, United StatesHQ recorded Sep 27, 2026201-500349 contacts →

Exact match

“FunnL was built on a revolutionary idea: B2B companies don’t need more leads-they need more qualified sales meetings with decision-makers.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17Exact matchIndiaHQ recorded Sep 27, 2026201-500339 contacts →

Exact match

“Inventive SMi was founded in 2008 with the goal of providing enterprise-grade communications solutions to businesses of all sizes.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18Exact matchReggio Calabria, ItalyHQ recorded Sep 27, 2026501-1,000299 contacts →

Exact match

“ACCUEIL is a leading Italian company in the field of Call Center and Business Process Outsourcing Services.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19Exact matchChelmsford, MA, United StatesHQ recorded Sep 27, 2026201-500291 contacts →

Exact match

“The market knows us as the leader in appointment setting.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20Exact matchLos Angeles, TX, United StatesHQ recorded Sep 27, 202651-200289 contacts →

Exact match

“Current Vertical Focus: Real Estate - Lead Generation, Lead Conversion, Lead Qualification, Agent Recruiting Mortgage - Lead Conversion, Lead Qualification Insurance - Lead…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21Exact matchWoodland Hills, CA, United StatesHQ recorded Sep 27, 202651-200278 contacts →

Exact match

“1105 Media, Inc, is a leading business-to-business (B2B) services provider whose sole mission is to help our customers grow their business.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22Exact matchMadrid, SpainHQ recorded Sep 27, 2026501-1,000276 contacts →

Exact match

“Accept@ Servicios Integrales es una empresa especializada en la venta telefónica que pertenece al Grupo Santalucia.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23Exact matchDetroit, MI, United StatesHQ recorded Sep 27, 20261,001-5,000247 contacts →

Exact match

“Rocket Connections is a sales and support platform specializing in contact center services.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24Exact matchBrighton, United KingdomHQ recorded Sep 27, 2026201-500243 contacts →

Exact match

“The Telemarketing Company is one of the UK's most trusted telemarketing agencies, delivering flexible, high-quality voice services, including pre and post sales research…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25Exact matchJerusalem, IsraelHQ recorded Sep 27, 2026n/a230 contacts →

Exact match

“GROW is a full-service marketing agency passionate about helping B2B companies achieve their goals.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

Showing 25 of 8,355 B2B telemarketing firms worldwide

See the full list, filter by size, metro and specialty, and access 8,284 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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B2B telemarketing firms worldwide at a glance

As of Sep 27, 2026
9.6%Verified-email coverage
10.4Average contacts per company
11-50Median size (employees)
3.1%Largest-city concentration · Pune
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
3,983
11-50
2,835
51-200
1,132
201-500
291
501-1,000
62
1,001-5,000
29
5,001-10,000
4
10001+
6

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 telemarketing firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “B2B telemarketing firms” 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 8,284 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 27, 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 telemarketing firms by location

35 lists · largest first

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

How many B2B telemarketing firms are there worldwide?

RevenueBase identified 8,355 company matches for B2B telemarketing firms 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?

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

Which country has the most B2B telemarketing firms?

The United States leads with 1,732 companies, followed by India (849) and the United Kingdom (683). Every B2B telemarketing firms list by country and city is linked on this page.

Which city has the most B2B telemarketing firms?

Pune leads with 256 company records, followed by London (187) and Rawalpindi (87).

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 8,284 professional contacts with verified work emails tracked across these 8,355 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 27, 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.