Company lists · Data refreshed September 2026

Top 25 Outbound calling agencies worldwide

RevenueBase identified 10,293 company matches for outbound calling agencies worldwide as of September 2026 and tracks 129,162 professional contacts across them, including 10,335 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers company matches for outbound calling 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 29, 2026. Country and city lists for outbound calling 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 29, 2026 How this list was built
10,293Companies
129,162Contacts tracked
10,335Verified emails
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The 25 largest outbound calling agencies worldwide

Ranked by team size
Top 25 of 10,293 company matches for outbound calling agencies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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 matchBerwyn, PA, United StatesHQ recorded Sep 29, 20265,001-10,0002,774 contacts →

Exact match

“Advanced Call Center Technologies, LLC (ACT) is a premier provider of domestic (USA), near shore and far shore outsourced call center services to the financial services, mortgage…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchSt Petersburg, FL, RussiaHQ recorded Sep 29, 20261,001-5,0001,198 contacts →

Exact match

“The Office Gurus (TOG) is a global call center and business process outsource provider of customer care, telemarketing, lead generation, appointment setting, order entry, accounts…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchAmman, JordanHQ recorded Sep 29, 20261,001-5,0001,128 contacts →

Exact match

“Crystel emerged as a leading Outsourcing Service Provider (OSP) since its establishment in Jordan in early 2007.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchDoral, FL, United StatesHQ recorded Sep 29, 20261,001-5,000902 contacts →

Exact match

“Our Company Inktel is a leading business process outsourcer that specializes in creating personalized call center solutions which enable our clients to increase market share…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchHorsham, PA, United StatesHQ recorded Sep 29, 2026501-1,000883 contacts →

Exact match

“If you are interested in growing your business or increasing efficiency, AnswerNet has the expertise, technology, and people to help you take your company to new heights!”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchAppleton, WI, United StatesHQ recorded Sep 29, 20261,001-5,000776 contacts →

Exact match

“Salelytics is now MarketSource.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchSt Louis, MO, United StatesHQ recorded Sep 29, 2026501-1,000724 contacts →

Exact match

“We book the qualified meetings that fill your pipeline for any B2B company ready to grow.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchDurban, South AfricaHQ recorded Sep 29, 2026501-1,000718 contacts →

Exact match

“Established in 2010, Talksure has developed a reputation for being a respected financial services provider and outsource business services partner.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchRedwood City, CA, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
10Exact matchLas Vegas, NV, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
11Exact matchJaipur, IndiaHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
12Exact matchAthens, GA, IndiaHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
13Exact matchSalisbury, NC, United StatesHQ recorded Sep 29, 2026501-1,000542 contacts →

Exact match

“We are customer service experts.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchSterling Heights, MI, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
15Exact matchCebu City, PhilippinesHQ recorded Sep 29, 20261,001-5,000504 contacts →

Exact match

“AZPIRED is a world-class provider of call center outsourcing services, proudly operating multiple locations across the Philippines.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchEncino, CA, United StatesHQ recorded Sep 29, 2026201-500499 contacts →

Exact match

“Callbox is the #1 trusted lead generation services and AI-Powered Growth Strategy Partner by enterprise and scaling businesses in the USA, Canada, Asia Pacific, Latin America…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchSan Francisco, CA, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
18Exact matchNoida, IndiaHQ recorded Sep 29, 20265,001-10,000467 contacts →

Exact match

“DigiTech is one of the fastest growing Outsourcing & Offsourcing company in Delhi/NCR.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchDenver, CO, United StatesHQ recorded Sep 29, 202651-200455 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchCairo, EgyptHQ recorded Sep 29, 20261,001-5,000447 contacts →

Exact match

“Proper Business solutions is offering a comprehensive suite of customer care call center services, outbound and lead generation, back-office and data processing solutions to…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchBandar Kuala Lumpur, MalaysiaHQ recorded Sep 29, 20261,001-5,000442 contacts →

Exact match

“UTS is one of Malaysia’s leading outsourced contact centre service providers – managing and operating outbound services for several financial institutions.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchWrocław, PolandHQ recorded Sep 29, 20261,001-5,000434 contacts →

Exact match

“CCIG Group has been offering outsourced contact center services since 2002 and professionally supporting its business partners in the B2C and B2B sectors.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchSanta Ana, CA, United StatesHQ recorded Sep 29, 2026501-1,000431 contacts →

Exact match

“About : Ansafone is the leading outsourced contact center solution provider for companies in the US and Canada and maintains international alliances for global reach.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchHurst, TX, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
25Exact matchMandaluyong City, PhilippinesHQ recorded Sep 29, 2026501-1,000411 contacts →

Exact match

“Magellan Solutions Outsourcing Inc.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 10,293 outbound calling agencies worldwide

See the full list, filter by size, metro and specialty, and access 10,335 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Outbound calling agencies worldwide at a glance

As of Sep 29, 2026
8.0%Verified-email coverage
12.5Average contacts per company
11-50Median size (employees)
2.4%Largest-city concentration · Pune
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
4,566
11-50
3,417
51-200
1,621
201-500
456
501-1,000
125
1,001-5,000
74
5,001-10,000
9
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 outbound calling agencies are linked below.
What qualifies
Company records worldwide whose business descriptions match “outbound calling 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 10,335 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 29, 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.

Outbound calling agencies by location

43 lists · largest first

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

How many outbound calling agencies are there worldwide?

RevenueBase identified 10,293 company matches for outbound calling 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?

Advanced Call Center Technologies, LLC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most outbound calling agencies?

The United States leads with 2,219 companies, followed by India (985) and the United Kingdom (758). Every outbound calling agencies list by country and city is linked on this page.

Which city has the most outbound calling agencies?

Pune leads with 245 company records, followed by London (216) and Rawalpindi (119).

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 10,335 professional contacts with verified work emails tracked across these 10,293 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 29, 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.