Company lists · Data refreshed November 2026

Top 25 Outbound calling companies worldwide

RevenueBase identified 7,968 company matches for outbound calling companies worldwide as of November 2026 and tracks 135,247 professional contacts across them, including 9,451 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for outbound calling companies 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 November 5, 2026. Country and city lists for outbound calling companies 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 Nov 5, 2026 How this list was built
7,968Companies
135,247Contacts tracked
9,451Verified emails
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The 25 largest outbound calling companies worldwide

Ranked by team size
Top 25 of 7,968 company matches for outbound calling companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 matchMedellín, ColombiaHQ recorded Nov 5, 202610001+6,207 contacts →

Exact match

“Maximizamos el valor de cada contacto de las empresas con sus clientes, gestionando los procesos de relacionamiento a través de canales tefónicos, virtuales y presenciales.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchBerwyn, PA, United StatesHQ recorded Nov 5, 20265,001-10,0003,116 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 · Nov 5, 2026 · View company records in RevenueBase
3Exact matchBuenos Aires, FL, ArgentinaHQ recorded Nov 5, 20261,001-5,0002,460 contacts →

Exact match

“Somos la compañía líder en Servicios Next Gen de Contact Center, Business Process Outsourcing (BPO) y Customer Experience (CX).”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchAkron, OH, United StatesHQ recorded Nov 5, 20261,001-5,0001,947 contacts →

Exact match

“InfoCision is an award-winning contact center partner trusted by leading brands for over 40 years.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchSt Petersburg, RussiaHQ recorded Nov 5, 20261,001-5,0001,318 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 · Nov 5, 2026 · View company records in RevenueBase
6Exact matchAmman, JordanHQ recorded Nov 5, 20261,001-5,0001,223 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 · Nov 5, 2026 · View company records in RevenueBase
7Exact matchHyderabad, IndiaHQ recorded Nov 5, 20261,001-5,0001,132 contacts →

Exact match

“Even the markets know that we’re the good call’!”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchDoral, FL, United StatesHQ recorded Nov 5, 20261,001-5,000969 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 · Nov 5, 2026 · View company records in RevenueBase
9Exact matchHorsham, PA, United StatesHQ recorded Nov 5, 2026501-1,000946 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 · Nov 5, 2026 · View company records in RevenueBase
10Exact matchTampa, FL, United StatesHQ recorded Nov 5, 20261,001-5,000815 contacts →

Exact match

“As a trusted global outsource provider, we know connection is a universal language.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchDurban, South AfricaHQ recorded Nov 5, 2026501-1,000740 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 · Nov 5, 2026 · View company records in RevenueBase
12Exact matchRedwood City, CA, United StatesHQ recorded Nov 5, 2026n/a725 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 · Nov 5, 2026 · View company records in RevenueBase
13Exact matchProvidencia, ChileHQ recorded Nov 5, 20261,001-5,000720 contacts →

Exact match

“Impulsamos el éxito de nuestros clientes a través de soluciones personalizadas en Contact Center y experiencia al cliente.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchJaipur, IndiaHQ recorded Nov 5, 2026501-1,000681 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 · Nov 5, 2026 · View company records in RevenueBase
15Exact matchCebu City, PhilippinesHQ recorded Nov 5, 20261,001-5,000661 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 · Nov 5, 2026 · View company records in RevenueBase
16Exact matchSalisbury, VA, United StatesHQ recorded Nov 5, 2026501-1,000623 contacts →

Exact match

“We are customer service experts.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchAlabang, PhilippinesHQ recorded Nov 5, 20261,001-5,000622 contacts →

Exact match

“ServiceFirst is a World Class Call Center and BPO with strategic locations around the globe providing an elevated Customer Experience to benefit your business with exceptional…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchAthens, GA, IndiaHQ recorded Nov 5, 2026201-500580 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 · Nov 5, 2026 · View company records in RevenueBase
19Exact matchBandar Kuala Lumpur, MalaysiaHQ recorded Nov 5, 20261,001-5,000545 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 · Nov 5, 2026 · View company records in RevenueBase
20Exact matchSterling Heights, United StatesHQ recorded Nov 5, 202651-200530 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 · Nov 5, 2026 · View company records in RevenueBase
21Exact matchHouston, United StatesHQ recorded Nov 5, 20261,001-5,000513 contacts →

Exact match

“SupportZebra is a business process outsourcing company based in the Philippines, with headquarters in the Houston,TX region, that specializes in: Sales & Marketing Retention |…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchSanta Ana, FL, United StatesHQ recorded Nov 5, 2026501-1,000467 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 · Nov 5, 2026 · View company records in RevenueBase
23Exact matchWrocław, PolandHQ recorded Nov 5, 20261,001-5,000459 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 · Nov 5, 2026 · View company records in RevenueBase
24Exact matchSao Paulo, BrazilHQ recorded Nov 5, 202610001+456 contacts →

Exact match

“Fundada em 2006, a AlmavivA do Brasil é uma das principais empresas do segmento de contact center e a única a oferecer soluções inovadoras de Business Process Outsourcing (BPO)…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchMandaluyong City, CA, PhilippinesHQ recorded Nov 5, 2026501-1,000452 contacts →

Exact match

“Magellan Solutions Outsourcing Inc.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 7,968 outbound calling companies worldwide

See the full list, filter by size, metro and specialty, and access 9,451 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Outbound calling companies worldwide at a glance

As of Nov 5, 2026
7.0%Verified-email coverage
17.0Average contacts per company
11-50Median size (employees)
1.6%Largest-city concentration · London
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
3,149
11-50
2,634
51-200
1,446
201-500
447
501-1,000
147
1,001-5,000
84
5,001-10,000
15
10001+
12

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 companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “outbound calling companies” 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 9,451 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 November 5, 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 companies by location

33 lists · largest first

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

How many outbound calling companies are there worldwide?

RevenueBase identified 7,968 company matches for outbound calling companies worldwide as of November 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?

Emtelco S.A tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most outbound calling companies?

The United States leads with 1,527 companies, followed by India (707) and the United Kingdom (504). Every outbound calling companies list by country and city is linked on this page.

Which city has the most outbound calling companies?

London leads with 127 company records, followed by Rawalpindi (122) and Pune (121).

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 9,451 professional contacts with verified work emails tracked across these 7,968 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 November 5, 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.