Company lists · Data refreshed November 2026

Top 25 Customer acquisition call centers worldwide

Name: Customer acquisition call centers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 8,822 companies tracked

RevenueBase identified 8,822 company matches for customer acquisition call centers worldwide as of November 2026 and tracks 125,285 professional contacts across them, including 10,128 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for customer acquisition call centers 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 customer acquisition call centers 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

8,822Companies

125,285Contacts tracked

10,128Verified emails

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The 25 largest customer acquisition call centers worldwide

Ranked by team size

Top 25 of 8,822 company matches for customer acquisition call centers 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Ibex. Pakistan	Exact match	Karachi, PakistanHQ recorded Nov 5, 2026	10001+	4,555 contacts →
	Exact match “ibex.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Advanced Call Center Technologies, LLC	Exact match	Berwyn, PA, United StatesHQ recorded Nov 5, 2026	5,001-10,000	3,116 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
3	Infocision Management Corporation	Exact match	Akron, OH, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,947 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
4	The Office Gurus	Exact match	St Petersburg, RussiaHQ recorded Nov 5, 2026	1,001-5,000	1,318 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
5	Btcc Call Center	Exact match	Goiânia, BrazilHQ recorded Nov 5, 2026	10001+	1,225 contacts →
	Exact match “Em breve uma nova página da BTCC Conexão Cliente.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Hrhnext Services Limited	Exact match	Hyderabad, IndiaHQ recorded Nov 5, 2026	1,001-5,000	1,132 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
7	Inktel Contact Center Solutions	Exact match	Doral, FL, United StatesHQ recorded Nov 5, 2026	1,001-5,000	969 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
8	Answernet	Exact match	Horsham, PA, United StatesHQ recorded Nov 5, 2026	501-1,000	946 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
9	Vector	Exact match	Fortaleza, BrazilHQ recorded Nov 5, 2026	1,001-5,000	795 contacts →
	Exact match “A VECTOR SERVIÇOS é uma empresa especializada na criação, implantação e gestão de serviços de Contact Center.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	Talksure	Exact match	Durban, South AfricaHQ recorded Nov 5, 2026	501-1,000	740 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
11	Salebuild	Exact match	Redwood City, CA, United StatesHQ recorded Nov 5, 2026	n/a	725 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
12	Fastco	Exact match	Providencia, ChileHQ recorded Nov 5, 2026	1,001-5,000	720 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
13	Girnar Care	Exact match	Jaipur, IndiaHQ recorded Nov 5, 2026	501-1,000	681 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
14	Global Contact Services GCS	Exact match	Salisbury, VA, United StatesHQ recorded Nov 5, 2026	501-1,000	623 contacts →
	Exact match “We are customer service experts.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Servicefirst	Exact match	Alabang, PhilippinesHQ recorded Nov 5, 2026	1,001-5,000	622 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
16	Telenet Marketing Solutions	Exact match	Athens, GA, IndiaHQ recorded Nov 5, 2026	201-500	580 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
17	UTS Marketing Solutions	Exact match	Bandar Kuala Lumpur, MalaysiaHQ recorded Nov 5, 2026	1,001-5,000	545 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
18	Alphavox Contact Center	Exact match	Sao Paulo, BrazilHQ recorded Nov 5, 2026	501-1,000	544 contacts →
	Exact match “A Alphavox dedica-se à construção de relacionamentos e negócios exclusivos pelo Brasil.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	Movingdneedle Pvt. LTD	Exact match	Sterling Heights, United StatesHQ recorded Nov 5, 2026	51-200	530 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
20	Supportzebra	Exact match	Houston, United StatesHQ recorded Nov 5, 2026	1,001-5,000	513 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
21	Upcom DTS	Exact match	Santiago, ChileHQ recorded Nov 5, 2026	1,001-5,000	487 contacts →
	Exact match “Nuestros servicios contribuyen al desarrollo de negocios más rentables, ya que poseemos la experiencia y tecnología que nos permite trabajar en el descubrimiento de nuevas…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Ansafone Contact Centers	Exact match	Santa Ana, FL, United StatesHQ recorded Nov 5, 2026	501-1,000	467 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
23	Saleshive	Exact match	Denver, CO, United StatesHQ recorded Nov 5, 2026	51-200	448 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	Proper Business Solutions	Exact match	Cairo, EgyptHQ recorded Nov 5, 2026	1,001-5,000	443 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 · Nov 5, 2026 · View company records in RevenueBase
25	Alliance Pdms	Exact match	Hurst, TX, United StatesHQ recorded Nov 5, 2026	51-200	443 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 · Nov 5, 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 “customer acquisition call centers”. 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 8,822 customer acquisition call centers worldwide

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Customer acquisition call centers worldwide at a glance

As of Nov 5, 2026

8.1%Verified-email coverage

14.2Average contacts per company

11-50Median size (employees)

1.7%Largest-city concentration · London

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

3,801

11-50

2,897

51-200

1,413

201-500

434

501-1,000

145

1,001-5,000

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 customer acquisition call centers are linked below.
What qualifies: Company records worldwide whose business descriptions match “customer acquisition call centers” 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 10,128 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.

Customer acquisition call centers by location

43 lists · largest first

Every Customer acquisition call centers 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 “customer acquisition call centers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many customer acquisition call centers are there worldwide?

RevenueBase identified 8,822 company matches for customer acquisition call centers 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?

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

Which country has the most customer acquisition call centers?

The United States leads with 1,859 companies, followed by India (639) and the United Kingdom (585). Every customer acquisition call centers list by country and city is linked on this page.

Which city has the most customer acquisition call centers?

London leads with 152 company records, followed by Pune (133) and Rawalpindi (107).

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 10,128 professional contacts with verified work emails tracked across these 8,822 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.